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Based on kernel version 2.6.32. Page generated on 2009-12-11 16:22 EST.

1	
2			    LINUX ALLOCATED DEVICES (2.6+ version)
3	
4		     Maintained by Alan Cox <device[AT]lanana[DOT]org>
5	
6			      Last revised: 6th April 2009
7	
8	This list is the Linux Device List, the official registry of allocated
9	device numbers and /dev directory nodes for the Linux operating
10	system.
11	
12	The latest version of this list is available from
13	http://www.lanana.org/docs/device-list/ or
14	ftp://ftp.kernel.org/pub/linux/docs/device-list/.  This version may be
15	newer than the one distributed with the Linux kernel.
16	
17	The LaTeX version of this document is no longer maintained.
18	
19	This document is included by reference into the Filesystem Hierarchy
20	Standard (FHS).	 The FHS is available from http://www.pathname.com/fhs/.
21	
22	Allocations marked (68k/Amiga) apply to Linux/68k on the Amiga
23	platform only.	Allocations marked (68k/Atari) apply to Linux/68k on
24	the Atari platform only.
25	
26	The symbol {2.6} means the allocation is obsolete and scheduled for
27	removal once kernel version 2.6 (or equivalent) is released. Some of these
28	allocations have already been removed.
29	
30	This document is in the public domain.	The author requests, however,
31	that semantically altered versions are not distributed without
32	permission of the author, assuming the author can be contacted without
33	an unreasonable effort.
34	
35	In particular, please don't sent patches for this list to Linus, at
36	least not without contacting me first.
37	
38	I do not have any information about these devices beyond what appears
39	on this list.  Any such information requests will be deleted without
40	reply.
41	
42	
43		  **** DEVICE DRIVERS AUTHORS PLEASE READ THIS ****
44	
45	To have a major number allocated, or a minor number in situations
46	where that applies (e.g. busmice), please contact me with the
47	appropriate device information.	 Also, if you have additional
48	information regarding any of the devices listed below, or if I have
49	made a mistake, I would greatly appreciate a note.
50	
51	I do, however, make a few requests about the nature of your report.
52	This is necessary for me to be able to keep this list up to date and
53	correct in a timely manner.  First of all, *please* send it to the
54	correct address... <device[AT]lanana.org>[DOT]  I receive hundreds of email
55	messages a day, so mail sent to other addresses may very well get lost
56	in the avalanche.  Please put in a descriptive subject, so I can find
57	your mail again should I need to.  Too many people send me email
58	saying just "device number request" in the subject.
59	
60	Second, please include a description of the device *in the same format
61	as this list*.	The reason for this is that it is the only way I have
62	found to ensure I have all the requisite information to publish your
63	device and avoid conflicts.
64	
65	Third, please don't assume that the distributed version of the list is
66	up to date.  Due to the number of registrations I have to maintain it
67	in "batch mode", so there is likely additional registrations that
68	haven't been listed yet.
69	
70	Fourth, remember that Linux now has extensive support for dynamic allocation
71	of device numbering and can use sysfs and udev to handle the naming needs.
72	There are still some exceptions in the serial and boot device area. Before
73	asking for a device number make sure you actually need one.
74	
75	Finally, sometimes I have to play "namespace police."  Please don't be
76	offended.  I often get submissions for /dev names that would be bound
77	to cause conflicts down the road.  I am trying to avoid getting in a
78	situation where we would have to suffer an incompatible forward
79	change.  Therefore, please consult with me *before* you make your
80	device names and numbers in any way public, at least to the point
81	where it would be at all difficult to get them changed.
82	
83	Your cooperation is appreciated.
84	
85	
86	  0		Unnamed devices (e.g. non-device mounts)
87			  0 = reserved as null device number
88			See block major 144, 145, 146 for expansion areas.
89	
90	  1 char	Memory devices
91			  1 = /dev/mem		Physical memory access
92			  2 = /dev/kmem		Kernel virtual memory access
93			  3 = /dev/null		Null device
94			  4 = /dev/port		I/O port access
95			  5 = /dev/zero		Null byte source
96			  6 = /dev/core		OBSOLETE - replaced by /proc/kcore
97			  7 = /dev/full		Returns ENOSPC on write
98			  8 = /dev/random	Nondeterministic random number gen.
99			  9 = /dev/urandom	Faster, less secure random number gen.
100			 10 = /dev/aio		Asynchronous I/O notification interface
101			 11 = /dev/kmsg		Writes to this come out as printk's
102			 12 = /dev/oldmem	Used by crashdump kernels to access
103						the memory of the kernel that crashed.
104	
105	  1 block	RAM disk
106			  0 = /dev/ram0		First RAM disk
107			  1 = /dev/ram1		Second RAM disk
108			    ...
109			250 = /dev/initrd	Initial RAM disk
110	
111			Older kernels had /dev/ramdisk (1, 1) here.
112			/dev/initrd refers to a RAM disk which was preloaded
113			by the boot loader; newer kernels use /dev/ram0 for
114			the initrd.
115	
116	  2 char	Pseudo-TTY masters
117			  0 = /dev/ptyp0	First PTY master
118			  1 = /dev/ptyp1	Second PTY master
119			    ...
120			255 = /dev/ptyef	256th PTY master
121	
122			Pseudo-tty's are named as follows:
123			* Masters are "pty", slaves are "tty";
124			* the fourth letter is one of pqrstuvwxyzabcde indicating
125			  the 1st through 16th series of 16 pseudo-ttys each, and
126			* the fifth letter is one of 0123456789abcdef indicating
127			  the position within the series.
128	
129			These are the old-style (BSD) PTY devices; Unix98
130			devices are on major 128 and above and use the PTY
131			master multiplex (/dev/ptmx) to acquire a PTY on
132			demand.
133	
134	  2 block	Floppy disks
135			  0 = /dev/fd0		Controller 0, drive 0, autodetect
136			  1 = /dev/fd1		Controller 0, drive 1, autodetect
137			  2 = /dev/fd2		Controller 0, drive 2, autodetect
138			  3 = /dev/fd3		Controller 0, drive 3, autodetect
139			128 = /dev/fd4		Controller 1, drive 0, autodetect
140			129 = /dev/fd5		Controller 1, drive 1, autodetect
141			130 = /dev/fd6		Controller 1, drive 2, autodetect
142			131 = /dev/fd7		Controller 1, drive 3, autodetect
143	
144			To specify format, add to the autodetect device number:
145			  0 = /dev/fd?		Autodetect format
146			  4 = /dev/fd?d360	5.25"  360K in a 360K  drive(1)
147			 20 = /dev/fd?h360	5.25"  360K in a 1200K drive(1)
148			 48 = /dev/fd?h410	5.25"  410K in a 1200K drive
149			 64 = /dev/fd?h420	5.25"  420K in a 1200K drive
150			 24 = /dev/fd?h720	5.25"  720K in a 1200K drive
151			 80 = /dev/fd?h880	5.25"  880K in a 1200K drive(1)
152			  8 = /dev/fd?h1200	5.25" 1200K in a 1200K drive(1)
153			 40 = /dev/fd?h1440	5.25" 1440K in a 1200K drive(1)
154			 56 = /dev/fd?h1476	5.25" 1476K in a 1200K drive
155			 72 = /dev/fd?h1494	5.25" 1494K in a 1200K drive
156			 92 = /dev/fd?h1600	5.25" 1600K in a 1200K drive(1)
157	
158			 12 = /dev/fd?u360	3.5"   360K Double Density(2)
159			 16 = /dev/fd?u720	3.5"   720K Double Density(1)
160			120 = /dev/fd?u800	3.5"   800K Double Density(2)
161			 52 = /dev/fd?u820	3.5"   820K Double Density
162			 68 = /dev/fd?u830	3.5"   830K Double Density
163			 84 = /dev/fd?u1040	3.5"  1040K Double Density(1)
164			 88 = /dev/fd?u1120	3.5"  1120K Double Density(1)
165			 28 = /dev/fd?u1440	3.5"  1440K High Density(1)
166			124 = /dev/fd?u1600	3.5"  1600K High Density(1)
167			 44 = /dev/fd?u1680	3.5"  1680K High Density(3)
168			 60 = /dev/fd?u1722	3.5"  1722K High Density
169			 76 = /dev/fd?u1743	3.5"  1743K High Density
170			 96 = /dev/fd?u1760	3.5"  1760K High Density
171			116 = /dev/fd?u1840	3.5"  1840K High Density(3)
172			100 = /dev/fd?u1920	3.5"  1920K High Density(1)
173			 32 = /dev/fd?u2880	3.5"  2880K Extra Density(1)
174			104 = /dev/fd?u3200	3.5"  3200K Extra Density
175			108 = /dev/fd?u3520	3.5"  3520K Extra Density
176			112 = /dev/fd?u3840	3.5"  3840K Extra Density(1)
177	
178			 36 = /dev/fd?CompaQ	Compaq 2880K drive; obsolete?
179	
180			(1) Autodetectable format
181			(2) Autodetectable format in a Double Density (720K) drive only
182			(3) Autodetectable format in a High Density (1440K) drive only
183	
184			NOTE: The letter in the device name (d, q, h or u)
185			signifies the type of drive: 5.25" Double Density (d),
186			5.25" Quad Density (q), 5.25" High Density (h) or 3.5"
187			(any model, u).	 The use of the capital letters D, H
188			and E for the 3.5" models have been deprecated, since
189			the drive type is insignificant for these devices.
190	
191	  3 char	Pseudo-TTY slaves
192			  0 = /dev/ttyp0	First PTY slave
193			  1 = /dev/ttyp1	Second PTY slave
194			    ...
195			255 = /dev/ttyef	256th PTY slave
196	
197			These are the old-style (BSD) PTY devices; Unix98
198			devices are on major 136 and above.
199	
200	  3 block	First MFM, RLL and IDE hard disk/CD-ROM interface
201			  0 = /dev/hda		Master: whole disk (or CD-ROM)
202			 64 = /dev/hdb		Slave: whole disk (or CD-ROM)
203	
204			For partitions, add to the whole disk device number:
205			  0 = /dev/hd?		Whole disk
206			  1 = /dev/hd?1		First partition
207			  2 = /dev/hd?2		Second partition
208			    ...
209			 63 = /dev/hd?63	63rd partition
210	
211			For Linux/i386, partitions 1-4 are the primary
212			partitions, and 5 and above are logical partitions.
213			Other versions of Linux use partitioning schemes
214			appropriate to their respective architectures.
215	
216	  4 char	TTY devices
217			  0 = /dev/tty0		Current virtual console
218	
219			  1 = /dev/tty1		First virtual console
220			    ...
221			 63 = /dev/tty63	63rd virtual console
222			 64 = /dev/ttyS0	First UART serial port
223			    ...
224			255 = /dev/ttyS191	192nd UART serial port
225	
226			UART serial ports refer to 8250/16450/16550 series devices.
227	
228			Older versions of the Linux kernel used this major
229			number for BSD PTY devices.  As of Linux 2.1.115, this
230			is no longer supported.	 Use major numbers 2 and 3.
231	
232	  4 block	Aliases for dynamically allocated major devices to be used
233			when its not possible to create the real device nodes
234			because the root filesystem is mounted read-only.
235	
236	                  0 = /dev/root
237	
238	  5 char	Alternate TTY devices
239			  0 = /dev/tty		Current TTY device
240			  1 = /dev/console	System console
241			  2 = /dev/ptmx		PTY master multiplex
242			 64 = /dev/cua0		Callout device for ttyS0
243			    ...
244			255 = /dev/cua191	Callout device for ttyS191
245	
246			(5,1) is /dev/console starting with Linux 2.1.71.  See
247			the section on terminal devices for more information
248			on /dev/console.
249	
250	  6 char	Parallel printer devices
251			  0 = /dev/lp0		Parallel printer on parport0
252			  1 = /dev/lp1		Parallel printer on parport1
253			    ...
254	
255			Current Linux kernels no longer have a fixed mapping
256			between parallel ports and I/O addresses.  Instead,
257			they are redirected through the parport multiplex layer.
258	
259	  7 char	Virtual console capture devices
260			  0 = /dev/vcs		Current vc text contents
261			  1 = /dev/vcs1		tty1 text contents
262			    ...
263			 63 = /dev/vcs63	tty63 text contents
264			128 = /dev/vcsa		Current vc text/attribute contents
265			129 = /dev/vcsa1	tty1 text/attribute contents
266			    ...
267			191 = /dev/vcsa63	tty63 text/attribute contents
268	
269			NOTE: These devices permit both read and write access.
270	
271	  7 block	Loopback devices
272			  0 = /dev/loop0	First loop device
273			  1 = /dev/loop1	Second loop device
274			    ...
275	
276			The loop devices are used to mount filesystems not
277			associated with block devices.	The binding to the
278			loop devices is handled by mount(8) or losetup(8).
279	
280	  8 block	SCSI disk devices (0-15)
281			  0 = /dev/sda		First SCSI disk whole disk
282			 16 = /dev/sdb		Second SCSI disk whole disk
283			 32 = /dev/sdc		Third SCSI disk whole disk
284			    ...
285			240 = /dev/sdp		Sixteenth SCSI disk whole disk
286	
287			Partitions are handled in the same way as for IDE
288			disks (see major number 3) except that the limit on
289			partitions is 15.
290	
291	  9 char	SCSI tape devices
292			  0 = /dev/st0		First SCSI tape, mode 0
293			  1 = /dev/st1		Second SCSI tape, mode 0
294			    ...
295			 32 = /dev/st0l		First SCSI tape, mode 1
296			 33 = /dev/st1l		Second SCSI tape, mode 1
297			    ...
298			 64 = /dev/st0m		First SCSI tape, mode 2
299			 65 = /dev/st1m		Second SCSI tape, mode 2
300			    ...
301			 96 = /dev/st0a		First SCSI tape, mode 3
302			 97 = /dev/st1a		Second SCSI tape, mode 3
303			      ...
304			128 = /dev/nst0		First SCSI tape, mode 0, no rewind
305			129 = /dev/nst1		Second SCSI tape, mode 0, no rewind
306			    ...
307			160 = /dev/nst0l	First SCSI tape, mode 1, no rewind
308			161 = /dev/nst1l	Second SCSI tape, mode 1, no rewind
309			    ...
310			192 = /dev/nst0m	First SCSI tape, mode 2, no rewind
311			193 = /dev/nst1m	Second SCSI tape, mode 2, no rewind
312			    ...
313			224 = /dev/nst0a	First SCSI tape, mode 3, no rewind
314			225 = /dev/nst1a	Second SCSI tape, mode 3, no rewind
315			    ...
316	
317			"No rewind" refers to the omission of the default
318			automatic rewind on device close.  The MTREW or MTOFFL
319			ioctl()'s can be used to rewind the tape regardless of
320			the device used to access it.
321	
322	  9 block	Metadisk (RAID) devices
323			  0 = /dev/md0		First metadisk group
324			  1 = /dev/md1		Second metadisk group
325			    ...
326	
327			The metadisk driver is used to span a
328			filesystem across multiple physical disks.
329	
330	 10 char	Non-serial mice, misc features
331			  0 = /dev/logibm	Logitech bus mouse
332			  1 = /dev/psaux	PS/2-style mouse port
333			  2 = /dev/inportbm	Microsoft Inport bus mouse
334			  3 = /dev/atibm	ATI XL bus mouse
335			  4 = /dev/jbm		J-mouse
336			  4 = /dev/amigamouse	Amiga mouse (68k/Amiga)
337			  5 = /dev/atarimouse	Atari mouse
338			  6 = /dev/sunmouse	Sun mouse
339			  7 = /dev/amigamouse1	Second Amiga mouse
340			  8 = /dev/smouse	Simple serial mouse driver
341			  9 = /dev/pc110pad	IBM PC-110 digitizer pad
342			 10 = /dev/adbmouse	Apple Desktop Bus mouse
343			 11 = /dev/vrtpanel	Vr41xx embedded touch panel
344			 13 = /dev/vpcmouse	Connectix Virtual PC Mouse
345			 14 = /dev/touchscreen/ucb1x00  UCB 1x00 touchscreen
346			 15 = /dev/touchscreen/mk712	MK712 touchscreen
347			128 = /dev/beep		Fancy beep device
348			129 =
349			130 = /dev/watchdog	Watchdog timer port
350			131 = /dev/temperature	Machine internal temperature
351			132 = /dev/hwtrap	Hardware fault trap
352			133 = /dev/exttrp	External device trap
353			134 = /dev/apm_bios	Advanced Power Management BIOS
354			135 = /dev/rtc		Real Time Clock
355			139 = /dev/openprom	SPARC OpenBoot PROM
356			140 = /dev/relay8	Berkshire Products Octal relay card
357			141 = /dev/relay16	Berkshire Products ISO-16 relay card
358			142 =
359			143 = /dev/pciconf	PCI configuration space
360			144 = /dev/nvram	Non-volatile configuration RAM
361			145 = /dev/hfmodem	Soundcard shortwave modem control
362			146 = /dev/graphics	Linux/SGI graphics device
363			147 = /dev/opengl	Linux/SGI OpenGL pipe
364			148 = /dev/gfx		Linux/SGI graphics effects device
365			149 = /dev/input/mouse	Linux/SGI Irix emulation mouse
366			150 = /dev/input/keyboard Linux/SGI Irix emulation keyboard
367			151 = /dev/led		Front panel LEDs
368			152 = /dev/kpoll	Kernel Poll Driver
369			153 = /dev/mergemem	Memory merge device
370			154 = /dev/pmu		Macintosh PowerBook power manager
371			155 = /dev/isictl	MultiTech ISICom serial control
372			156 = /dev/lcd		Front panel LCD display
373			157 = /dev/ac		Applicom Intl Profibus card
374			158 = /dev/nwbutton	Netwinder external button
375			159 = /dev/nwdebug	Netwinder debug interface
376			160 = /dev/nwflash	Netwinder flash memory
377			161 = /dev/userdma	User-space DMA access
378			162 = /dev/smbus	System Management Bus
379			163 = /dev/lik		Logitech Internet Keyboard
380			164 = /dev/ipmo		Intel Intelligent Platform Management
381			165 = /dev/vmmon	VMWare virtual machine monitor
382			166 = /dev/i2o/ctl	I2O configuration manager
383			167 = /dev/specialix_sxctl Specialix serial control
384			168 = /dev/tcldrv	Technology Concepts serial control
385			169 = /dev/specialix_rioctl Specialix RIO serial control
386			170 = /dev/thinkpad/thinkpad	IBM Thinkpad devices
387			171 = /dev/srripc	QNX4 API IPC manager
388			172 = /dev/usemaclone	Semaphore clone device
389			173 = /dev/ipmikcs	Intelligent Platform Management
390			174 = /dev/uctrl	SPARCbook 3 microcontroller
391			175 = /dev/agpgart	AGP Graphics Address Remapping Table
392			176 = /dev/gtrsc	Gorgy Timing radio clock
393			177 = /dev/cbm		Serial CBM bus
394			178 = /dev/jsflash	JavaStation OS flash SIMM
395			179 = /dev/xsvc		High-speed shared-mem/semaphore service
396			180 = /dev/vrbuttons	Vr41xx button input device
397			181 = /dev/toshiba	Toshiba laptop SMM support
398			182 = /dev/perfctr	Performance-monitoring counters
399			183 = /dev/hwrng	Generic random number generator
400			184 = /dev/cpu/microcode CPU microcode update interface
401			186 = /dev/atomicps	Atomic shapshot of process state data
402			187 = /dev/irnet	IrNET device
403			188 = /dev/smbusbios	SMBus BIOS
404			189 = /dev/ussp_ctl	User space serial port control
405			190 = /dev/crash	Mission Critical Linux crash dump facility
406			191 = /dev/pcl181	<information missing>
407			192 = /dev/nas_xbus	NAS xbus LCD/buttons access
408			193 = /dev/d7s		SPARC 7-segment display
409			194 = /dev/zkshim	Zero-Knowledge network shim control
410			195 = /dev/elographics/e2201	Elographics touchscreen E271-2201
411			198 = /dev/sexec	Signed executable interface
412			199 = /dev/scanners/cuecat :CueCat barcode scanner
413			200 = /dev/net/tun	TAP/TUN network device
414			201 = /dev/button/gulpb	Transmeta GULP-B buttons
415			202 = /dev/emd/ctl	Enhanced Metadisk RAID (EMD) control
416			204 = /dev/video/em8300		EM8300 DVD decoder control
417			205 = /dev/video/em8300_mv	EM8300 DVD decoder video
418			206 = /dev/video/em8300_ma	EM8300 DVD decoder audio
419			207 = /dev/video/em8300_sp	EM8300 DVD decoder subpicture
420			208 = /dev/compaq/cpqphpc	Compaq PCI Hot Plug Controller
421			209 = /dev/compaq/cpqrid	Compaq Remote Insight Driver
422			210 = /dev/impi/bt	IMPI coprocessor block transfer
423			211 = /dev/impi/smic	IMPI coprocessor stream interface
424			212 = /dev/watchdogs/0	First watchdog device
425			213 = /dev/watchdogs/1	Second watchdog device
426			214 = /dev/watchdogs/2	Third watchdog device
427			215 = /dev/watchdogs/3	Fourth watchdog device
428			216 = /dev/fujitsu/apanel	Fujitsu/Siemens application panel
429			217 = /dev/ni/natmotn		National Instruments Motion
430			218 = /dev/kchuid	Inter-process chuid control
431			219 = /dev/modems/mwave	MWave modem firmware upload
432			220 = /dev/mptctl	Message passing technology (MPT) control
433			221 = /dev/mvista/hssdsi	Montavista PICMG hot swap system driver
434			222 = /dev/mvista/hasi		Montavista PICMG high availability
435			223 = /dev/input/uinput		User level driver support for input
436			224 = /dev/tpm		TCPA TPM driver
437			225 = /dev/pps		Pulse Per Second driver
438			226 = /dev/systrace	Systrace device
439			227 = /dev/mcelog	X86_64 Machine Check Exception driver
440			228 = /dev/hpet		HPET driver
441			229 = /dev/fuse		Fuse (virtual filesystem in user-space)
442			230 = /dev/midishare	MidiShare driver
443			231 = /dev/snapshot	System memory snapshot device
444			232 = /dev/kvm		Kernel-based virtual machine (hardware virtualization extensions)
445			233 = /dev/kmview	View-OS A process with a view
446			240-254			Reserved for local use
447			255			Reserved for MISC_DYNAMIC_MINOR
448	
449	 11 char	Raw keyboard device	(Linux/SPARC only)
450			  0 = /dev/kbd		Raw keyboard device
451	
452	 11 char	Serial Mux device	(Linux/PA-RISC only)
453			  0 = /dev/ttyB0	First mux port
454			  1 = /dev/ttyB1	Second mux port
455			    ...
456	
457	 11 block	SCSI CD-ROM devices
458			  0 = /dev/scd0		First SCSI CD-ROM
459			  1 = /dev/scd1		Second SCSI CD-ROM
460			    ...
461	
462			The prefix /dev/sr (instead of /dev/scd) has been deprecated.
463	
464	 12 char	QIC-02 tape
465			  2 = /dev/ntpqic11	QIC-11, no rewind-on-close
466			  3 = /dev/tpqic11	QIC-11, rewind-on-close
467			  4 = /dev/ntpqic24	QIC-24, no rewind-on-close
468			  5 = /dev/tpqic24	QIC-24, rewind-on-close
469			  6 = /dev/ntpqic120	QIC-120, no rewind-on-close
470			  7 = /dev/tpqic120	QIC-120, rewind-on-close
471			  8 = /dev/ntpqic150	QIC-150, no rewind-on-close
472			  9 = /dev/tpqic150	QIC-150, rewind-on-close
473	
474			The device names specified are proposed -- if there
475			are "standard" names for these devices, please let me know.
476	
477	 12 block
478	
479	 13 char	Input core
480			  0 = /dev/input/js0	First joystick
481			  1 = /dev/input/js1	Second joystick
482			    ...
483			 32 = /dev/input/mouse0	First mouse
484			 33 = /dev/input/mouse1	Second mouse
485			    ...
486			 63 = /dev/input/mice	Unified mouse
487			 64 = /dev/input/event0	First event queue
488			 65 = /dev/input/event1	Second event queue
489			    ...
490	
491			Each device type has 5 bits (32 minors).
492	
493	 13 block	8-bit MFM/RLL/IDE controller
494			  0 = /dev/xda		First XT disk whole disk
495			 64 = /dev/xdb		Second XT disk whole disk
496	
497			Partitions are handled in the same way as IDE disks
498			(see major number 3).
499	
500	 14 char	Open Sound System (OSS)
501			  0 = /dev/mixer	Mixer control
502			  1 = /dev/sequencer	Audio sequencer
503			  2 = /dev/midi00	First MIDI port
504			  3 = /dev/dsp		Digital audio
505			  4 = /dev/audio	Sun-compatible digital audio
506			  6 =
507			  7 = /dev/audioctl	SPARC audio control device
508			  8 = /dev/sequencer2	Sequencer -- alternate device
509			 16 = /dev/mixer1	Second soundcard mixer control
510			 17 = /dev/patmgr0	Sequencer patch manager
511			 18 = /dev/midi01	Second MIDI port
512			 19 = /dev/dsp1		Second soundcard digital audio
513			 20 = /dev/audio1	Second soundcard Sun digital audio
514			 33 = /dev/patmgr1	Sequencer patch manager
515			 34 = /dev/midi02	Third MIDI port
516			 50 = /dev/midi03	Fourth MIDI port
517	
518	 14 block
519	
520	 15 char	Joystick
521			  0 = /dev/js0		First analog joystick
522			  1 = /dev/js1		Second analog joystick
523			    ...
524			128 = /dev/djs0		First digital joystick
525			129 = /dev/djs1		Second digital joystick
526			    ...
527	 15 block	Sony CDU-31A/CDU-33A CD-ROM
528			  0 = /dev/sonycd	Sony CDU-31a CD-ROM
529	
530	 16 char	Non-SCSI scanners
531			  0 = /dev/gs4500	Genius 4500 handheld scanner
532	
533	 16 block	GoldStar CD-ROM
534			  0 = /dev/gscd		GoldStar CD-ROM
535	
536	 17 char	OBSOLETE (was Chase serial card)
537			  0 = /dev/ttyH0	First Chase port
538			  1 = /dev/ttyH1	Second Chase port
539			    ...
540	 17 block	Optics Storage CD-ROM
541			  0 = /dev/optcd	Optics Storage CD-ROM
542	
543	 18 char	OBSOLETE (was Chase serial card - alternate devices)
544			  0 = /dev/cuh0		Callout device for ttyH0
545			  1 = /dev/cuh1		Callout device for ttyH1
546			    ...
547	 18 block	Sanyo CD-ROM
548			  0 = /dev/sjcd		Sanyo CD-ROM
549	
550	 19 char	Cyclades serial card
551			  0 = /dev/ttyC0	First Cyclades port
552			    ...
553			 31 = /dev/ttyC31	32nd Cyclades port
554	
555	 19 block	"Double" compressed disk
556			  0 = /dev/double0	First compressed disk
557			    ...
558			  7 = /dev/double7	Eighth compressed disk
559			128 = /dev/cdouble0	Mirror of first compressed disk
560			    ...
561			135 = /dev/cdouble7	Mirror of eighth compressed disk
562	
563			See the Double documentation for the meaning of the
564			mirror devices.
565	
566	 20 char	Cyclades serial card - alternate devices
567			  0 = /dev/cub0		Callout device for ttyC0
568			    ...
569			 31 = /dev/cub31	Callout device for ttyC31
570	
571	 20 block	Hitachi CD-ROM (under development)
572			  0 = /dev/hitcd	Hitachi CD-ROM
573	
574	 21 char	Generic SCSI access
575			  0 = /dev/sg0		First generic SCSI device
576			  1 = /dev/sg1		Second generic SCSI device
577			    ...
578	
579			Most distributions name these /dev/sga, /dev/sgb...;
580			this sets an unnecessary limit of 26 SCSI devices in
581			the system and is counter to standard Linux
582			device-naming practice.
583	
584	 21 block	Acorn MFM hard drive interface
585			  0 = /dev/mfma		First MFM drive whole disk
586			 64 = /dev/mfmb		Second MFM drive whole disk
587	
588			This device is used on the ARM-based Acorn RiscPC.
589			Partitions are handled the same way as for IDE disks
590			(see major number 3).
591	
592	 22 char	Digiboard serial card
593			  0 = /dev/ttyD0	First Digiboard port
594			  1 = /dev/ttyD1	Second Digiboard port
595			    ...
596	 22 block	Second IDE hard disk/CD-ROM interface
597			  0 = /dev/hdc		Master: whole disk (or CD-ROM)
598			 64 = /dev/hdd		Slave: whole disk (or CD-ROM)
599	
600			Partitions are handled the same way as for the first
601			interface (see major number 3).
602	
603	 23 char	Digiboard serial card - alternate devices
604			  0 = /dev/cud0		Callout device for ttyD0
605			  1 = /dev/cud1		Callout device for ttyD1
606			      ...
607	 23 block	Mitsumi proprietary CD-ROM
608			  0 = /dev/mcd		Mitsumi CD-ROM
609	
610	 24 char	Stallion serial card
611			  0 = /dev/ttyE0	Stallion port 0 card 0
612			  1 = /dev/ttyE1	Stallion port 1 card 0
613			    ...
614			 64 = /dev/ttyE64	Stallion port 0 card 1
615			 65 = /dev/ttyE65	Stallion port 1 card 1
616			      ...
617			128 = /dev/ttyE128	Stallion port 0 card 2
618			129 = /dev/ttyE129	Stallion port 1 card 2
619			    ...
620			192 = /dev/ttyE192	Stallion port 0 card 3
621			193 = /dev/ttyE193	Stallion port 1 card 3
622			    ...
623	 24 block	Sony CDU-535 CD-ROM
624			  0 = /dev/cdu535	Sony CDU-535 CD-ROM
625	
626	 25 char	Stallion serial card - alternate devices
627			  0 = /dev/cue0		Callout device for ttyE0
628			  1 = /dev/cue1		Callout device for ttyE1
629			    ...
630			 64 = /dev/cue64	Callout device for ttyE64
631			 65 = /dev/cue65	Callout device for ttyE65
632			    ...
633			128 = /dev/cue128	Callout device for ttyE128
634			129 = /dev/cue129	Callout device for ttyE129
635			    ...
636			192 = /dev/cue192	Callout device for ttyE192
637			193 = /dev/cue193	Callout device for ttyE193
638			      ...
639	 25 block	First Matsushita (Panasonic/SoundBlaster) CD-ROM
640			  0 = /dev/sbpcd0	Panasonic CD-ROM controller 0 unit 0
641			  1 = /dev/sbpcd1	Panasonic CD-ROM controller 0 unit 1
642			  2 = /dev/sbpcd2	Panasonic CD-ROM controller 0 unit 2
643			  3 = /dev/sbpcd3	Panasonic CD-ROM controller 0 unit 3
644	
645	 26 char
646	
647	 26 block	Second Matsushita (Panasonic/SoundBlaster) CD-ROM
648			  0 = /dev/sbpcd4	Panasonic CD-ROM controller 1 unit 0
649			  1 = /dev/sbpcd5	Panasonic CD-ROM controller 1 unit 1
650			  2 = /dev/sbpcd6	Panasonic CD-ROM controller 1 unit 2
651			  3 = /dev/sbpcd7	Panasonic CD-ROM controller 1 unit 3
652	
653	 27 char	QIC-117 tape
654			  0 = /dev/qft0		Unit 0, rewind-on-close
655			  1 = /dev/qft1		Unit 1, rewind-on-close
656			  2 = /dev/qft2		Unit 2, rewind-on-close
657			  3 = /dev/qft3		Unit 3, rewind-on-close
658			  4 = /dev/nqft0	Unit 0, no rewind-on-close
659			  5 = /dev/nqft1	Unit 1, no rewind-on-close
660			  6 = /dev/nqft2	Unit 2, no rewind-on-close
661			  7 = /dev/nqft3	Unit 3, no rewind-on-close
662			 16 = /dev/zqft0	Unit 0, rewind-on-close, compression
663			 17 = /dev/zqft1	Unit 1, rewind-on-close, compression
664			 18 = /dev/zqft2	Unit 2, rewind-on-close, compression
665			 19 = /dev/zqft3	Unit 3, rewind-on-close, compression
666			 20 = /dev/nzqft0	Unit 0, no rewind-on-close, compression
667			 21 = /dev/nzqft1	Unit 1, no rewind-on-close, compression
668			 22 = /dev/nzqft2	Unit 2, no rewind-on-close, compression
669			 23 = /dev/nzqft3	Unit 3, no rewind-on-close, compression
670			 32 = /dev/rawqft0	Unit 0, rewind-on-close, no file marks
671			 33 = /dev/rawqft1	Unit 1, rewind-on-close, no file marks
672			 34 = /dev/rawqft2	Unit 2, rewind-on-close, no file marks
673			 35 = /dev/rawqft3	Unit 3, rewind-on-close, no file marks
674			 36 = /dev/nrawqft0	Unit 0, no rewind-on-close, no file marks
675			 37 = /dev/nrawqft1	Unit 1, no rewind-on-close, no file marks
676			 38 = /dev/nrawqft2	Unit 2, no rewind-on-close, no file marks
677			 39 = /dev/nrawqft3	Unit 3, no rewind-on-close, no file marks
678	
679	 27 block	Third Matsushita (Panasonic/SoundBlaster) CD-ROM
680			  0 = /dev/sbpcd8	Panasonic CD-ROM controller 2 unit 0
681			  1 = /dev/sbpcd9	Panasonic CD-ROM controller 2 unit 1
682			  2 = /dev/sbpcd10	Panasonic CD-ROM controller 2 unit 2
683			  3 = /dev/sbpcd11	Panasonic CD-ROM controller 2 unit 3
684	
685	 28 char	Stallion serial card - card programming
686			  0 = /dev/staliomem0	First Stallion card I/O memory
687			  1 = /dev/staliomem1	Second Stallion card I/O memory
688			  2 = /dev/staliomem2	Third Stallion card I/O memory
689			  3 = /dev/staliomem3	Fourth Stallion card I/O memory
690	
691	 28 char	Atari SLM ACSI laser printer (68k/Atari)
692			  0 = /dev/slm0		First SLM laser printer
693			  1 = /dev/slm1		Second SLM laser printer
694			    ...
695	 28 block	Fourth Matsushita (Panasonic/SoundBlaster) CD-ROM
696			  0 = /dev/sbpcd12	Panasonic CD-ROM controller 3 unit 0
697			  1 = /dev/sbpcd13	Panasonic CD-ROM controller 3 unit 1
698			  2 = /dev/sbpcd14	Panasonic CD-ROM controller 3 unit 2
699			  3 = /dev/sbpcd15	Panasonic CD-ROM controller 3 unit 3
700	
701	 28 block	ACSI disk (68k/Atari)
702			  0 = /dev/ada		First ACSI disk whole disk
703			 16 = /dev/adb		Second ACSI disk whole disk
704			 32 = /dev/adc		Third ACSI disk whole disk
705			    ...
706			240 = /dev/adp		16th ACSI disk whole disk
707	
708			Partitions are handled in the same way as for IDE
709			disks (see major number 3) except that the limit on
710			partitions is 15, like SCSI.
711	
712	 29 char	Universal frame buffer
713			  0 = /dev/fb0		First frame buffer
714			  1 = /dev/fb1		Second frame buffer
715			    ...
716			 31 = /dev/fb31		32nd frame buffer
717	
718	 29 block	Aztech/Orchid/Okano/Wearnes CD-ROM
719			  0 = /dev/aztcd	Aztech CD-ROM
720	
721	 30 char	iBCS-2 compatibility devices
722			  0 = /dev/socksys	Socket access
723			  1 = /dev/spx		SVR3 local X interface
724			 32 = /dev/inet/ip	Network access
725			 33 = /dev/inet/icmp
726			 34 = /dev/inet/ggp
727			 35 = /dev/inet/ipip
728			 36 = /dev/inet/tcp
729			 37 = /dev/inet/egp
730			 38 = /dev/inet/pup
731			 39 = /dev/inet/udp
732			 40 = /dev/inet/idp
733			 41 = /dev/inet/rawip
734	
735			Additionally, iBCS-2 requires the following links:
736	
737			/dev/ip -> /dev/inet/ip
738			/dev/icmp -> /dev/inet/icmp
739			/dev/ggp -> /dev/inet/ggp
740			/dev/ipip -> /dev/inet/ipip
741			/dev/tcp -> /dev/inet/tcp
742			/dev/egp -> /dev/inet/egp
743			/dev/pup -> /dev/inet/pup
744			/dev/udp -> /dev/inet/udp
745			/dev/idp -> /dev/inet/idp
746			/dev/rawip -> /dev/inet/rawip
747			/dev/inet/arp -> /dev/inet/udp
748			/dev/inet/rip -> /dev/inet/udp
749			/dev/nfsd -> /dev/socksys
750			/dev/X0R -> /dev/null (? apparently not required ?)
751	
752	 30 block	Philips LMS CM-205 CD-ROM
753			  0 = /dev/cm205cd	Philips LMS CM-205 CD-ROM
754	
755			/dev/lmscd is an older name for this device.  This
756			driver does not work with the CM-205MS CD-ROM.
757	
758	 31 char	MPU-401 MIDI
759			  0 = /dev/mpu401data	MPU-401 data port
760			  1 = /dev/mpu401stat	MPU-401 status port
761	
762	 31 block	ROM/flash memory card
763			  0 = /dev/rom0		First ROM card (rw)
764			      ...
765			  7 = /dev/rom7		Eighth ROM card (rw)
766			  8 = /dev/rrom0	First ROM card (ro)
767			    ...
768			 15 = /dev/rrom7	Eighth ROM card (ro)
769			 16 = /dev/flash0	First flash memory card (rw)
770			    ...
771			 23 = /dev/flash7	Eighth flash memory card (rw)
772			 24 = /dev/rflash0	First flash memory card (ro)
773			    ...
774			 31 = /dev/rflash7	Eighth flash memory card (ro)
775	
776			The read-write (rw) devices support back-caching
777			written data in RAM, as well as writing to flash RAM
778			devices.  The read-only devices (ro) support reading
779			only.
780	
781	 32 char	Specialix serial card
782			  0 = /dev/ttyX0	First Specialix port
783			  1 = /dev/ttyX1	Second Specialix port
784			    ...
785	 32 block	Philips LMS CM-206 CD-ROM
786			  0 = /dev/cm206cd	Philips LMS CM-206 CD-ROM
787	
788	 33 char	Specialix serial card - alternate devices
789			  0 = /dev/cux0		Callout device for ttyX0
790			  1 = /dev/cux1		Callout device for ttyX1
791			    ...
792	 33 block	Third IDE hard disk/CD-ROM interface
793			  0 = /dev/hde		Master: whole disk (or CD-ROM)
794			 64 = /dev/hdf		Slave: whole disk (or CD-ROM)
795	
796			Partitions are handled the same way as for the first
797			interface (see major number 3).
798	
799	 34 char	Z8530 HDLC driver
800			  0 = /dev/scc0		First Z8530, first port
801			  1 = /dev/scc1		First Z8530, second port
802			  2 = /dev/scc2		Second Z8530, first port
803			  3 = /dev/scc3		Second Z8530, second port
804			    ...
805	
806			In a previous version these devices were named
807			/dev/sc1 for /dev/scc0, /dev/sc2 for /dev/scc1, and so
808			on.
809	
810	 34 block	Fourth IDE hard disk/CD-ROM interface
811			  0 = /dev/hdg		Master: whole disk (or CD-ROM)
812			 64 = /dev/hdh		Slave: whole disk (or CD-ROM)
813	
814			Partitions are handled the same way as for the first
815			interface (see major number 3).
816	
817	 35 char	tclmidi MIDI driver
818			  0 = /dev/midi0	First MIDI port, kernel timed
819			  1 = /dev/midi1	Second MIDI port, kernel timed
820			  2 = /dev/midi2	Third MIDI port, kernel timed
821			  3 = /dev/midi3	Fourth MIDI port, kernel timed
822			 64 = /dev/rmidi0	First MIDI port, untimed
823			 65 = /dev/rmidi1	Second MIDI port, untimed
824			 66 = /dev/rmidi2	Third MIDI port, untimed
825			 67 = /dev/rmidi3	Fourth MIDI port, untimed
826			128 = /dev/smpte0	First MIDI port, SMPTE timed
827			129 = /dev/smpte1	Second MIDI port, SMPTE timed
828			130 = /dev/smpte2	Third MIDI port, SMPTE timed
829			131 = /dev/smpte3	Fourth MIDI port, SMPTE timed
830	
831	 35 block	Slow memory ramdisk
832			  0 = /dev/slram	Slow memory ramdisk
833	
834	 36 char	Netlink support
835			  0 = /dev/route	Routing, device updates, kernel to user
836			  1 = /dev/skip		enSKIP security cache control
837			  3 = /dev/fwmonitor	Firewall packet copies
838			 16 = /dev/tap0		First Ethertap device
839			    ...
840			 31 = /dev/tap15	16th Ethertap device
841	
842	 36 block	MCA ESDI hard disk
843			  0 = /dev/eda		First ESDI disk whole disk
844			 64 = /dev/edb		Second ESDI disk whole disk
845			    ...
846	
847			Partitions are handled in the same way as IDE disks
848			(see major number 3).
849	
850	 37 char	IDE tape
851			  0 = /dev/ht0		First IDE tape
852			  1 = /dev/ht1		Second IDE tape
853			    ...
854			128 = /dev/nht0		First IDE tape, no rewind-on-close
855			129 = /dev/nht1		Second IDE tape, no rewind-on-close
856			    ...
857	
858			Currently, only one IDE tape drive is supported.
859	
860	 37 block	Zorro II ramdisk
861			  0 = /dev/z2ram	Zorro II ramdisk
862	
863	 38 char	Myricom PCI Myrinet board
864			  0 = /dev/mlanai0	First Myrinet board
865			  1 = /dev/mlanai1	Second Myrinet board
866			    ...
867	
868			This device is used for status query, board control
869			and "user level packet I/O."  This board is also
870			accessible as a standard networking "eth" device.
871	
872	 38 block	OBSOLETE (was Linux/AP+)
873	
874	 39 char	ML-16P experimental I/O board
875			  0 = /dev/ml16pa-a0	First card, first analog channel
876			  1 = /dev/ml16pa-a1	First card, second analog channel
877			    ...
878			 15 = /dev/ml16pa-a15	First card, 16th analog channel
879			 16 = /dev/ml16pa-d	First card, digital lines
880			 17 = /dev/ml16pa-c0	First card, first counter/timer
881			 18 = /dev/ml16pa-c1	First card, second counter/timer
882			 19 = /dev/ml16pa-c2	First card, third counter/timer
883			 32 = /dev/ml16pb-a0	Second card, first analog channel
884			 33 = /dev/ml16pb-a1	Second card, second analog channel
885			    ...
886			 47 = /dev/ml16pb-a15	Second card, 16th analog channel
887			 48 = /dev/ml16pb-d	Second card, digital lines
888			 49 = /dev/ml16pb-c0	Second card, first counter/timer
889			 50 = /dev/ml16pb-c1	Second card, second counter/timer
890			 51 = /dev/ml16pb-c2	Second card, third counter/timer
891			      ...
892	 39 block
893	
894	 40 char
895	
896	 40 block
897	
898	 41 char	Yet Another Micro Monitor
899			  0 = /dev/yamm		Yet Another Micro Monitor
900	
901	 41 block
902	
903	 42 char	Demo/sample use
904	
905	 42 block	Demo/sample use
906	
907			This number is intended for use in sample code, as
908			well as a general "example" device number.  It
909			should never be used for a device driver that is being
910			distributed; either obtain an official number or use
911			the local/experimental range.  The sudden addition or
912			removal of a driver with this number should not cause
913			ill effects to the system (bugs excepted.)
914	
915			IN PARTICULAR, ANY DISTRIBUTION WHICH CONTAINS A
916			DEVICE DRIVER USING MAJOR NUMBER 42 IS NONCOMPLIANT.
917	
918	 43 char	isdn4linux virtual modem
919			  0 = /dev/ttyI0	First virtual modem
920			    ...
921			 63 = /dev/ttyI63	64th virtual modem
922	
923	 43 block	Network block devices
924			  0 = /dev/nb0		First network block device
925			  1 = /dev/nb1		Second network block device
926			    ...
927	
928			Network Block Device is somehow similar to loopback
929			devices: If you read from it, it sends packet across
930			network asking server for data. If you write to it, it
931			sends packet telling server to write. It could be used
932			to mounting filesystems over the net, swapping over
933			the net, implementing block device in userland etc.
934	
935	 44 char	isdn4linux virtual modem - alternate devices
936			  0 = /dev/cui0		Callout device for ttyI0
937			    ...
938			 63 = /dev/cui63	Callout device for ttyI63
939	
940	 44 block	Flash Translation Layer (FTL) filesystems
941			  0 = /dev/ftla		FTL on first Memory Technology Device
942			 16 = /dev/ftlb		FTL on second Memory Technology Device
943			 32 = /dev/ftlc		FTL on third Memory Technology Device
944			    ...
945			240 = /dev/ftlp		FTL on 16th Memory Technology Device
946	
947			Partitions are handled in the same way as for IDE
948			disks (see major number 3) except that the partition
949			limit is 15 rather than 63 per disk (same as SCSI.)
950	
951	 45 char	isdn4linux ISDN BRI driver
952			  0 = /dev/isdn0	First virtual B channel raw data
953			    ...
954			 63 = /dev/isdn63	64th virtual B channel raw data
955			 64 = /dev/isdnctrl0	First channel control/debug
956			    ...
957			127 = /dev/isdnctrl63	64th channel control/debug
958	
959			128 = /dev/ippp0	First SyncPPP device
960			    ...
961			191 = /dev/ippp63	64th SyncPPP device
962	
963			255 = /dev/isdninfo	ISDN monitor interface
964	
965	 45 block	Parallel port IDE disk devices
966			  0 = /dev/pda		First parallel port IDE disk
967			 16 = /dev/pdb		Second parallel port IDE disk
968			 32 = /dev/pdc		Third parallel port IDE disk
969			 48 = /dev/pdd		Fourth parallel port IDE disk
970	
971			Partitions are handled in the same way as for IDE
972			disks (see major number 3) except that the partition
973			limit is 15 rather than 63 per disk.
974	
975	 46 char	Comtrol Rocketport serial card
976			  0 = /dev/ttyR0	First Rocketport port
977			  1 = /dev/ttyR1	Second Rocketport port
978			    ...
979	 46 block	Parallel port ATAPI CD-ROM devices
980			  0 = /dev/pcd0		First parallel port ATAPI CD-ROM
981			  1 = /dev/pcd1		Second parallel port ATAPI CD-ROM
982			  2 = /dev/pcd2		Third parallel port ATAPI CD-ROM
983			  3 = /dev/pcd3		Fourth parallel port ATAPI CD-ROM
984	
985	 47 char	Comtrol Rocketport serial card - alternate devices
986			  0 = /dev/cur0		Callout device for ttyR0
987			  1 = /dev/cur1		Callout device for ttyR1
988			    ...
989	 47 block	Parallel port ATAPI disk devices
990			  0 = /dev/pf0		First parallel port ATAPI disk
991			  1 = /dev/pf1		Second parallel port ATAPI disk
992			  2 = /dev/pf2		Third parallel port ATAPI disk
993			  3 = /dev/pf3		Fourth parallel port ATAPI disk
994	
995			This driver is intended for floppy disks and similar
996			devices and hence does not support partitioning.
997	
998	 48 char	SDL RISCom serial card
999			  0 = /dev/ttyL0	First RISCom port
1000			  1 = /dev/ttyL1	Second RISCom port
1001			    ...
1002	 48 block	Mylex DAC960 PCI RAID controller; first controller
1003			  0 = /dev/rd/c0d0	First disk, whole disk
1004			  8 = /dev/rd/c0d1	Second disk, whole disk
1005			    ...
1006			248 = /dev/rd/c0d31	32nd disk, whole disk
1007	
1008			For partitions add:
1009			  0 = /dev/rd/c?d?	Whole disk
1010			  1 = /dev/rd/c?d?p1	First partition
1011			    ...
1012			  7 = /dev/rd/c?d?p7	Seventh partition
1013	
1014	 49 char	SDL RISCom serial card - alternate devices
1015			  0 = /dev/cul0		Callout device for ttyL0
1016			  1 = /dev/cul1		Callout device for ttyL1
1017			    ...
1018	 49 block	Mylex DAC960 PCI RAID controller; second controller
1019			  0 = /dev/rd/c1d0	First disk, whole disk
1020			  8 = /dev/rd/c1d1	Second disk, whole disk
1021			    ...
1022			248 = /dev/rd/c1d31	32nd disk, whole disk
1023	
1024			Partitions are handled as for major 48.
1025	
1026	 50 char	Reserved for GLINT
1027	
1028	 50 block	Mylex DAC960 PCI RAID controller; third controller
1029			  0 = /dev/rd/c2d0	First disk, whole disk
1030			  8 = /dev/rd/c2d1	Second disk, whole disk
1031			    ...
1032			248 = /dev/rd/c2d31	32nd disk, whole disk
1033	
1034	 51 char	Baycom radio modem OR Radio Tech BIM-XXX-RS232 radio modem
1035			  0 = /dev/bc0		First Baycom radio modem
1036			  1 = /dev/bc1		Second Baycom radio modem
1037			    ...
1038	 51 block	Mylex DAC960 PCI RAID controller; fourth controller
1039			  0 = /dev/rd/c3d0	First disk, whole disk
1040			  8 = /dev/rd/c3d1	Second disk, whole disk
1041			    ...
1042			248 = /dev/rd/c3d31	32nd disk, whole disk
1043	
1044			Partitions are handled as for major 48.
1045	
1046	 52 char	Spellcaster DataComm/BRI ISDN card
1047			  0 = /dev/dcbri0	First DataComm card
1048			  1 = /dev/dcbri1	Second DataComm card
1049			  2 = /dev/dcbri2	Third DataComm card
1050			  3 = /dev/dcbri3	Fourth DataComm card
1051	
1052	 52 block	Mylex DAC960 PCI RAID controller; fifth controller
1053			  0 = /dev/rd/c4d0	First disk, whole disk
1054			  8 = /dev/rd/c4d1	Second disk, whole disk
1055			    ...
1056			248 = /dev/rd/c4d31	32nd disk, whole disk
1057	
1058			Partitions are handled as for major 48.
1059	
1060	 53 char	BDM interface for remote debugging MC683xx microcontrollers
1061			  0 = /dev/pd_bdm0	PD BDM interface on lp0
1062			  1 = /dev/pd_bdm1	PD BDM interface on lp1
1063			  2 = /dev/pd_bdm2	PD BDM interface on lp2
1064			  4 = /dev/icd_bdm0	ICD BDM interface on lp0
1065			  5 = /dev/icd_bdm1	ICD BDM interface on lp1
1066			  6 = /dev/icd_bdm2	ICD BDM interface on lp2
1067	
1068			This device is used for the interfacing to the MC683xx
1069			microcontrollers via Background Debug Mode by use of a
1070			Parallel Port interface. PD is the Motorola Public
1071			Domain Interface and ICD is the commercial interface
1072			by P&E.
1073	
1074	 53 block	Mylex DAC960 PCI RAID controller; sixth controller
1075			  0 = /dev/rd/c5d0	First disk, whole disk
1076			  8 = /dev/rd/c5d1	Second disk, whole disk
1077			    ...
1078			248 = /dev/rd/c5d31	32nd disk, whole disk
1079	
1080			Partitions are handled as for major 48.
1081	
1082	 54 char	Electrocardiognosis Holter serial card
1083			  0 = /dev/holter0	First Holter port
1084			  1 = /dev/holter1	Second Holter port
1085			  2 = /dev/holter2	Third Holter port
1086	
1087			A custom serial card used by Electrocardiognosis SRL
1088			<mseritan[AT]ottonel.pub[DOT]ro> to transfer data from Holter
1089			24-hour heart monitoring equipment.
1090	
1091	 54 block	Mylex DAC960 PCI RAID controller; seventh controller
1092			  0 = /dev/rd/c6d0	First disk, whole disk
1093			  8 = /dev/rd/c6d1	Second disk, whole disk
1094			    ...
1095			248 = /dev/rd/c6d31	32nd disk, whole disk
1096	
1097			Partitions are handled as for major 48.
1098	
1099	 55 char	DSP56001 digital signal processor
1100			  0 = /dev/dsp56k	First DSP56001
1101	
1102	 55 block	Mylex DAC960 PCI RAID controller; eighth controller
1103			  0 = /dev/rd/c7d0	First disk, whole disk
1104			  8 = /dev/rd/c7d1	Second disk, whole disk
1105			    ...
1106			248 = /dev/rd/c7d31	32nd disk, whole disk
1107	
1108			Partitions are handled as for major 48.
1109	
1110	 56 char	Apple Desktop Bus
1111			  0 = /dev/adb		ADB bus control
1112	
1113			Additional devices will be added to this number, all
1114			starting with /dev/adb.
1115	
1116	 56 block	Fifth IDE hard disk/CD-ROM interface
1117			  0 = /dev/hdi		Master: whole disk (or CD-ROM)
1118			 64 = /dev/hdj		Slave: whole disk (or CD-ROM)
1119	
1120			Partitions are handled the same way as for the first
1121			interface (see major number 3).
1122	
1123	 57 char	Hayes ESP serial card
1124			  0 = /dev/ttyP0	First ESP port
1125			  1 = /dev/ttyP1	Second ESP port
1126			    ...
1127	
1128	 57 block	Sixth IDE hard disk/CD-ROM interface
1129			  0 = /dev/hdk		Master: whole disk (or CD-ROM)
1130			 64 = /dev/hdl		Slave: whole disk (or CD-ROM)
1131	
1132			Partitions are handled the same way as for the first
1133			interface (see major number 3).
1134	
1135	 58 char	Hayes ESP serial card - alternate devices
1136			  0 = /dev/cup0		Callout device for ttyP0
1137			  1 = /dev/cup1		Callout device for ttyP1
1138			    ...
1139	
1140	 58 block	Reserved for logical volume manager
1141	
1142	 59 char	sf firewall package
1143			  0 = /dev/firewall	Communication with sf kernel module
1144	
1145	 59 block	Generic PDA filesystem device
1146			  0 = /dev/pda0		First PDA device
1147			  1 = /dev/pda1		Second PDA device
1148			    ...
1149	
1150			The pda devices are used to mount filesystems on
1151			remote pda's (basically slow handheld machines with
1152			proprietary OS's and limited memory and storage
1153			running small fs translation drivers) through serial /
1154			IRDA / parallel links.
1155	
1156			NAMING CONFLICT -- PROPOSED REVISED NAME /dev/rpda0 etc
1157	
1158	 60-63 char	LOCAL/EXPERIMENTAL USE
1159	
1160	 60-63 block	LOCAL/EXPERIMENTAL USE
1161			Allocated for local/experimental use.  For devices not
1162			assigned official numbers, these ranges should be
1163			used in order to avoid conflicting with future assignments.
1164	
1165	 64 char	ENskip kernel encryption package
1166			  0 = /dev/enskip	Communication with ENskip kernel module
1167	
1168	 64 block	Scramdisk/DriveCrypt encrypted devices
1169			  0 = /dev/scramdisk/master    Master node for ioctls
1170			  1 = /dev/scramdisk/1         First encrypted device
1171			  2 = /dev/scramdisk/2         Second encrypted device
1172			  ...
1173			255 = /dev/scramdisk/255       255th encrypted device
1174	
1175			The filename of the encrypted container and the passwords
1176			are sent via ioctls (using the sdmount tool) to the master
1177			node which then activates them via one of the
1178			/dev/scramdisk/x nodes for loop mounting (all handled
1179			through the sdmount tool).
1180	
1181			Requested by: andy[AT]scramdisklinux[DOT]org
1182	
1183	 65 char	Sundance "plink" Transputer boards (obsolete, unused)
1184			  0 = /dev/plink0	First plink device
1185			  1 = /dev/plink1	Second plink device
1186			  2 = /dev/plink2	Third plink device
1187			  3 = /dev/plink3	Fourth plink device
1188			 64 = /dev/rplink0	First plink device, raw
1189			 65 = /dev/rplink1	Second plink device, raw
1190			 66 = /dev/rplink2	Third plink device, raw
1191			 67 = /dev/rplink3	Fourth plink device, raw
1192			128 = /dev/plink0d	First plink device, debug
1193			129 = /dev/plink1d	Second plink device, debug
1194			130 = /dev/plink2d	Third plink device, debug
1195			131 = /dev/plink3d	Fourth plink device, debug
1196			192 = /dev/rplink0d	First plink device, raw, debug
1197			193 = /dev/rplink1d	Second plink device, raw, debug
1198			194 = /dev/rplink2d	Third plink device, raw, debug
1199			195 = /dev/rplink3d	Fourth plink device, raw, debug
1200	
1201			This is a commercial driver; contact James Howes
1202			<jth[AT]prosig.demon.co.uk> for information[DOT]
1203	
1204	 65 block	SCSI disk devices (16-31)
1205			  0 = /dev/sdq		17th SCSI disk whole disk
1206			 16 = /dev/sdr		18th SCSI disk whole disk
1207			 32 = /dev/sds		19th SCSI disk whole disk
1208			    ...
1209			240 = /dev/sdaf		32nd SCSI disk whole disk
1210	
1211			Partitions are handled in the same way as for IDE
1212			disks (see major number 3) except that the limit on
1213			partitions is 15.
1214	
1215	 66 char	YARC PowerPC PCI coprocessor card
1216			  0 = /dev/yppcpci0	First YARC card
1217			  1 = /dev/yppcpci1	Second YARC card
1218			    ...
1219	
1220	 66 block	SCSI disk devices (32-47)
1221			  0 = /dev/sdag		33th SCSI disk whole disk
1222			 16 = /dev/sdah		34th SCSI disk whole disk
1223			 32 = /dev/sdai		35th SCSI disk whole disk
1224			    ...
1225			240 = /dev/sdav		48nd SCSI disk whole disk
1226	
1227			Partitions are handled in the same way as for IDE
1228			disks (see major number 3) except that the limit on
1229			partitions is 15.
1230	
1231	 67 char	Coda network file system
1232			  0 = /dev/cfs0		Coda cache manager
1233	
1234			See http://www.coda.cs.cmu.edu for information about Coda.
1235	
1236	 67 block	SCSI disk devices (48-63)
1237			  0 = /dev/sdaw		49th SCSI disk whole disk
1238			 16 = /dev/sdax		50th SCSI disk whole disk
1239			 32 = /dev/sday		51st SCSI disk whole disk
1240			    ...
1241			240 = /dev/sdbl		64th SCSI disk whole disk
1242	
1243			Partitions are handled in the same way as for IDE
1244			disks (see major number 3) except that the limit on
1245			partitions is 15.
1246	
1247	 68 char	CAPI 2.0 interface
1248			  0 = /dev/capi20	Control device
1249			  1 = /dev/capi20.00	First CAPI 2.0 application
1250			  2 = /dev/capi20.01	Second CAPI 2.0 application
1251			    ...
1252			 20 = /dev/capi20.19	19th CAPI 2.0 application
1253	
1254			ISDN CAPI 2.0 driver for use with CAPI 2.0
1255			applications; currently supports the AVM B1 card.
1256	
1257	 68 block	SCSI disk devices (64-79)
1258			  0 = /dev/sdbm		65th SCSI disk whole disk
1259			 16 = /dev/sdbn		66th SCSI disk whole disk
1260			 32 = /dev/sdbo		67th SCSI disk whole disk
1261			    ...
1262			240 = /dev/sdcb		80th SCSI disk whole disk
1263	
1264			Partitions are handled in the same way as for IDE
1265			disks (see major number 3) except that the limit on
1266			partitions is 15.
1267	
1268	 69 char	MA16 numeric accelerator card
1269			  0 = /dev/ma16		Board memory access
1270	
1271	 69 block	SCSI disk devices (80-95)
1272			  0 = /dev/sdcc		81st SCSI disk whole disk
1273			 16 = /dev/sdcd		82nd SCSI disk whole disk
1274			 32 = /dev/sdce		83th SCSI disk whole disk
1275			    ...
1276			240 = /dev/sdcr		96th SCSI disk whole disk
1277	
1278			Partitions are handled in the same way as for IDE
1279			disks (see major number 3) except that the limit on
1280			partitions is 15.
1281	
1282	 70 char	SpellCaster Protocol Services Interface
1283			  0 = /dev/apscfg	Configuration interface
1284			  1 = /dev/apsauth	Authentication interface
1285			  2 = /dev/apslog	Logging interface
1286			  3 = /dev/apsdbg	Debugging interface
1287			 64 = /dev/apsisdn	ISDN command interface
1288			 65 = /dev/apsasync	Async command interface
1289			128 = /dev/apsmon	Monitor interface
1290	
1291	 70 block	SCSI disk devices (96-111)
1292			  0 = /dev/sdcs		97th SCSI disk whole disk
1293			 16 = /dev/sdct		98th SCSI disk whole disk
1294			 32 = /dev/sdcu		99th SCSI disk whole disk
1295			    ...
1296			240 = /dev/sddh		112nd SCSI disk whole disk
1297	
1298			Partitions are handled in the same way as for IDE
1299			disks (see major number 3) except that the limit on
1300			partitions is 15.
1301	
1302	 71 char	Computone IntelliPort II serial card
1303			  0 = /dev/ttyF0	IntelliPort II board 0, port 0
1304			  1 = /dev/ttyF1	IntelliPort II board 0, port 1
1305			    ...
1306			 63 = /dev/ttyF63	IntelliPort II board 0, port 63
1307			 64 = /dev/ttyF64	IntelliPort II board 1, port 0
1308			 65 = /dev/ttyF65	IntelliPort II board 1, port 1
1309			    ...
1310			127 = /dev/ttyF127	IntelliPort II board 1, port 63
1311			128 = /dev/ttyF128	IntelliPort II board 2, port 0
1312			129 = /dev/ttyF129	IntelliPort II board 2, port 1
1313			    ...
1314			191 = /dev/ttyF191	IntelliPort II board 2, port 63
1315			192 = /dev/ttyF192	IntelliPort II board 3, port 0
1316			193 = /dev/ttyF193	IntelliPort II board 3, port 1
1317			    ...
1318			255 = /dev/ttyF255	IntelliPort II board 3, port 63
1319	
1320	 71 block	SCSI disk devices (112-127)
1321			  0 = /dev/sddi		113th SCSI disk whole disk
1322			 16 = /dev/sddj		114th SCSI disk whole disk
1323			 32 = /dev/sddk		115th SCSI disk whole disk
1324			    ...
1325			240 = /dev/sddx		128th SCSI disk whole disk
1326	
1327			Partitions are handled in the same way as for IDE
1328			disks (see major number 3) except that the limit on
1329			partitions is 15.
1330	
1331	 72 char	Computone IntelliPort II serial card - alternate devices
1332			  0 = /dev/cuf0		Callout device for ttyF0
1333			  1 = /dev/cuf1		Callout device for ttyF1
1334			    ...
1335			 63 = /dev/cuf63	Callout device for ttyF63
1336			 64 = /dev/cuf64	Callout device for ttyF64
1337			 65 = /dev/cuf65	Callout device for ttyF65
1338			    ...
1339			127 = /dev/cuf127	Callout device for ttyF127
1340			128 = /dev/cuf128	Callout device for ttyF128
1341			129 = /dev/cuf129	Callout device for ttyF129
1342			    ...
1343			191 = /dev/cuf191	Callout device for ttyF191
1344			192 = /dev/cuf192	Callout device for ttyF192
1345			193 = /dev/cuf193	Callout device for ttyF193
1346			    ...
1347			255 = /dev/cuf255	Callout device for ttyF255
1348	
1349	 72 block	Compaq Intelligent Drive Array, first controller
1350			  0 = /dev/ida/c0d0	First logical drive whole disk
1351			 16 = /dev/ida/c0d1	Second logical drive whole disk
1352			    ...
1353			240 = /dev/ida/c0d15	16th logical drive whole disk
1354	
1355			Partitions are handled the same way as for Mylex
1356			DAC960 (see major number 48) except that the limit on
1357			partitions is 15.
1358	
1359	 73 char	Computone IntelliPort II serial card - control devices
1360			  0 = /dev/ip2ipl0	Loadware device for board 0
1361			  1 = /dev/ip2stat0	Status device for board 0
1362			  4 = /dev/ip2ipl1	Loadware device for board 1
1363			  5 = /dev/ip2stat1	Status device for board 1
1364			  8 = /dev/ip2ipl2	Loadware device for board 2
1365			  9 = /dev/ip2stat2	Status device for board 2
1366			 12 = /dev/ip2ipl3	Loadware device for board 3
1367			 13 = /dev/ip2stat3	Status device for board 3
1368	
1369	 73 block	Compaq Intelligent Drive Array, second controller
1370			  0 = /dev/ida/c1d0	First logical drive whole disk
1371			 16 = /dev/ida/c1d1	Second logical drive whole disk
1372			    ...
1373			240 = /dev/ida/c1d15	16th logical drive whole disk
1374	
1375			Partitions are handled the same way as for Mylex
1376			DAC960 (see major number 48) except that the limit on
1377			partitions is 15.
1378	
1379	 74 char	SCI bridge
1380			  0 = /dev/SCI/0	SCI device 0
1381			  1 = /dev/SCI/1	SCI device 1
1382			    ...
1383	
1384			Currently for Dolphin Interconnect Solutions' PCI-SCI
1385			bridge.
1386	
1387	 74 block	Compaq Intelligent Drive Array, third controller
1388			  0 = /dev/ida/c2d0	First logical drive whole disk
1389			 16 = /dev/ida/c2d1	Second logical drive whole disk
1390			    ...
1391			240 = /dev/ida/c2d15	16th logical drive whole disk
1392	
1393			Partitions are handled the same way as for Mylex
1394			DAC960 (see major number 48) except that the limit on
1395			partitions is 15.
1396	
1397	 75 char	Specialix IO8+ serial card
1398			  0 = /dev/ttyW0	First IO8+ port, first card
1399			  1 = /dev/ttyW1	Second IO8+ port, first card
1400			    ...
1401			  8 = /dev/ttyW8	First IO8+ port, second card
1402			    ...
1403	
1404	 75 block	Compaq Intelligent Drive Array, fourth controller
1405			  0 = /dev/ida/c3d0	First logical drive whole disk
1406			 16 = /dev/ida/c3d1	Second logical drive whole disk
1407			    ...
1408			240 = /dev/ida/c3d15	16th logical drive whole disk
1409	
1410			Partitions are handled the same way as for Mylex
1411			DAC960 (see major number 48) except that the limit on
1412			partitions is 15.
1413	
1414	 76 char	Specialix IO8+ serial card - alternate devices
1415			  0 = /dev/cuw0		Callout device for ttyW0
1416			  1 = /dev/cuw1		Callout device for ttyW1
1417			    ...
1418			  8 = /dev/cuw8		Callout device for ttyW8
1419			    ...
1420	
1421	 76 block	Compaq Intelligent Drive Array, fifth controller
1422			  0 = /dev/ida/c4d0	First logical drive whole disk
1423			 16 = /dev/ida/c4d1	Second logical drive whole disk
1424			    ...
1425			240 = /dev/ida/c4d15	16th logical drive whole disk
1426	
1427			Partitions are handled the same way as for Mylex
1428			DAC960 (see major number 48) except that the limit on
1429			partitions is 15.
1430	
1431	
1432	 77 char	ComScire Quantum Noise Generator
1433			  0 = /dev/qng		ComScire Quantum Noise Generator
1434	
1435	 77 block	Compaq Intelligent Drive Array, sixth controller
1436			  0 = /dev/ida/c5d0	First logical drive whole disk
1437			 16 = /dev/ida/c5d1	Second logical drive whole disk
1438			    ...
1439			240 = /dev/ida/c5d15	16th logical drive whole disk
1440	
1441			Partitions are handled the same way as for Mylex
1442			DAC960 (see major number 48) except that the limit on
1443			partitions is 15.
1444	
1445	 78 char	PAM Software's multimodem boards
1446			  0 = /dev/ttyM0	First PAM modem
1447			  1 = /dev/ttyM1	Second PAM modem
1448			    ...
1449	
1450	 78 block	Compaq Intelligent Drive Array, seventh controller
1451			  0 = /dev/ida/c6d0	First logical drive whole disk
1452			 16 = /dev/ida/c6d1	Second logical drive whole disk
1453			    ...
1454			240 = /dev/ida/c6d15	16th logical drive whole disk
1455	
1456			Partitions are handled the same way as for Mylex
1457			DAC960 (see major number 48) except that the limit on
1458			partitions is 15.
1459	
1460	 79 char	PAM Software's multimodem boards - alternate devices
1461			  0 = /dev/cum0		Callout device for ttyM0
1462			  1 = /dev/cum1		Callout device for ttyM1
1463			    ...
1464	
1465	 79 block	Compaq Intelligent Drive Array, eighth controller
1466			  0 = /dev/ida/c7d0	First logical drive whole disk
1467			 16 = /dev/ida/c7d1	Second logical drive whole disk
1468			    ...
1469			240 = /dev/ida/c715	16th logical drive whole disk
1470	
1471			Partitions are handled the same way as for Mylex
1472			DAC960 (see major number 48) except that the limit on
1473			partitions is 15.
1474	
1475	 80 char	Photometrics AT200 CCD camera
1476			  0 = /dev/at200	Photometrics AT200 CCD camera
1477	
1478	 80 block	I2O hard disk
1479			  0 = /dev/i2o/hda	First I2O hard disk, whole disk
1480			 16 = /dev/i2o/hdb	Second I2O hard disk, whole disk
1481			    ...
1482			240 = /dev/i2o/hdp	16th I2O hard disk, whole disk
1483	
1484			Partitions are handled in the same way as for IDE
1485			disks (see major number 3) except that the limit on
1486			partitions is 15.
1487	
1488	 81 char	video4linux
1489			  0 = /dev/video0	Video capture/overlay device
1490			    ...
1491			 63 = /dev/video63	Video capture/overlay device
1492			 64 = /dev/radio0	Radio device
1493			    ...
1494			127 = /dev/radio63	Radio device
1495			192 = /dev/vtx0		Teletext device
1496			    ...
1497			223 = /dev/vtx31	Teletext device
1498			224 = /dev/vbi0		Vertical blank interrupt
1499			    ...
1500			255 = /dev/vbi31	Vertical blank interrupt
1501	
1502	 81 block	I2O hard disk
1503			  0 = /dev/i2o/hdq	17th I2O hard disk, whole disk
1504			 16 = /dev/i2o/hdr	18th I2O hard disk, whole disk
1505			    ...
1506			240 = /dev/i2o/hdaf	32nd I2O hard disk, whole disk
1507	
1508			Partitions are handled in the same way as for IDE
1509			disks (see major number 3) except that the limit on
1510			partitions is 15.
1511	
1512	 82 char	WiNRADiO communications receiver card
1513			  0 = /dev/winradio0	First WiNRADiO card
1514			  1 = /dev/winradio1	Second WiNRADiO card
1515			    ...
1516	
1517			The driver and documentation may be obtained from
1518			http://www.proximity.com.au/~brian/winradio/
1519	
1520	 82 block	I2O hard disk
1521			  0 = /dev/i2o/hdag	33rd I2O hard disk, whole disk
1522			 16 = /dev/i2o/hdah	34th I2O hard disk, whole disk
1523			    ...
1524			240 = /dev/i2o/hdav	48th I2O hard disk, whole disk
1525	
1526			Partitions are handled in the same way as for IDE
1527			disks (see major number 3) except that the limit on
1528			partitions is 15.
1529	
1530	 83 char	Matrox mga_vid video driver
1531	 		 0 = /dev/mga_vid0	1st video card
1532			 1 = /dev/mga_vid1	2nd video card
1533			 2 = /dev/mga_vid2	3rd video card
1534			  ...
1535		        15 = /dev/mga_vid15	16th video card
1536	
1537	 83 block	I2O hard disk
1538			  0 = /dev/i2o/hdaw	49th I2O hard disk, whole disk
1539			 16 = /dev/i2o/hdax	50th I2O hard disk, whole disk
1540			    ...
1541			240 = /dev/i2o/hdbl	64th I2O hard disk, whole disk
1542	
1543			Partitions are handled in the same way as for IDE
1544			disks (see major number 3) except that the limit on
1545			partitions is 15.
1546	
1547	 84 char	Ikon 1011[57] Versatec Greensheet Interface
1548			  0 = /dev/ihcp0	First Greensheet port
1549			  1 = /dev/ihcp1	Second Greensheet port
1550	
1551	 84 block	I2O hard disk
1552			  0 = /dev/i2o/hdbm	65th I2O hard disk, whole disk
1553			 16 = /dev/i2o/hdbn	66th I2O hard disk, whole disk
1554			    ...
1555			240 = /dev/i2o/hdcb	80th I2O hard disk, whole disk
1556	
1557			Partitions are handled in the same way as for IDE
1558			disks (see major number 3) except that the limit on
1559			partitions is 15.
1560	
1561	 85 char	Linux/SGI shared memory input queue
1562			  0 = /dev/shmiq	Master shared input queue
1563			  1 = /dev/qcntl0	First device pushed
1564			  2 = /dev/qcntl1	Second device pushed
1565			    ...
1566	
1567	 85 block	I2O hard disk
1568			  0 = /dev/i2o/hdcc	81st I2O hard disk, whole disk
1569			 16 = /dev/i2o/hdcd	82nd I2O hard disk, whole disk
1570			    ...
1571			240 = /dev/i2o/hdcr	96th I2O hard disk, whole disk
1572	
1573			Partitions are handled in the same way as for IDE
1574			disks (see major number 3) except that the limit on
1575			partitions is 15.
1576	
1577	 86 char	SCSI media changer
1578			  0 = /dev/sch0		First SCSI media changer
1579			  1 = /dev/sch1		Second SCSI media changer
1580			    ...
1581	
1582	 86 block	I2O hard disk
1583			  0 = /dev/i2o/hdcs	97th I2O hard disk, whole disk
1584			 16 = /dev/i2o/hdct	98th I2O hard disk, whole disk
1585			    ...
1586			240 = /dev/i2o/hddh	112th I2O hard disk, whole disk
1587	
1588			Partitions are handled in the same way as for IDE
1589			disks (see major number 3) except that the limit on
1590			partitions is 15.
1591	
1592	 87 char	Sony Control-A1 stereo control bus
1593			  0 = /dev/controla0	First device on chain
1594			  1 = /dev/controla1	Second device on chain
1595			    ...
1596	
1597	 87 block	I2O hard disk
1598			  0 = /dev/i2o/hddi	113rd I2O hard disk, whole disk
1599			 16 = /dev/i2o/hddj	114th I2O hard disk, whole disk
1600			    ...
1601			240 = /dev/i2o/hddx	128th I2O hard disk, whole disk
1602	
1603			Partitions are handled in the same way as for IDE
1604			disks (see major number 3) except that the limit on
1605			partitions is 15.
1606	
1607	 88 char	COMX synchronous serial card
1608			  0 = /dev/comx0	COMX channel 0
1609			  1 = /dev/comx1	COMX channel 1
1610			    ...
1611	
1612	 88 block	Seventh IDE hard disk/CD-ROM interface
1613			  0 = /dev/hdm		Master: whole disk (or CD-ROM)
1614			 64 = /dev/hdn		Slave: whole disk (or CD-ROM)
1615	
1616			Partitions are handled the same way as for the first
1617			interface (see major number 3).
1618	
1619	 89 char	I2C bus interface
1620			  0 = /dev/i2c-0	First I2C adapter
1621			  1 = /dev/i2c-1	Second I2C adapter
1622			    ...
1623	
1624	 89 block	Eighth IDE hard disk/CD-ROM interface
1625			  0 = /dev/hdo		Master: whole disk (or CD-ROM)
1626			 64 = /dev/hdp		Slave: whole disk (or CD-ROM)
1627	
1628			Partitions are handled the same way as for the first
1629			interface (see major number 3).
1630	
1631	 90 char	Memory Technology Device (RAM, ROM, Flash)
1632			  0 = /dev/mtd0		First MTD (rw)
1633			  1 = /dev/mtdr0	First MTD (ro)
1634			    ...
1635			 30 = /dev/mtd15	16th MTD (rw)
1636			 31 = /dev/mtdr15	16th MTD (ro)
1637	
1638	 90 block	Ninth IDE hard disk/CD-ROM interface
1639			  0 = /dev/hdq		Master: whole disk (or CD-ROM)
1640			 64 = /dev/hdr		Slave: whole disk (or CD-ROM)
1641	
1642			Partitions are handled the same way as for the first
1643			interface (see major number 3).
1644	
1645	 91 char	CAN-Bus devices
1646			  0 = /dev/can0		First CAN-Bus controller
1647			  1 = /dev/can1		Second CAN-Bus controller
1648			    ...
1649	
1650	 91 block	Tenth IDE hard disk/CD-ROM interface
1651			  0 = /dev/hds		Master: whole disk (or CD-ROM)
1652			 64 = /dev/hdt		Slave: whole disk (or CD-ROM)
1653	
1654			Partitions are handled the same way as for the first
1655			interface (see major number 3).
1656	
1657	 92 char	Reserved for ith Kommunikationstechnik MIC ISDN card
1658	
1659	 92 block	PPDD encrypted disk driver
1660			  0 = /dev/ppdd0	First encrypted disk
1661			  1 = /dev/ppdd1	Second encrypted disk
1662			    ...
1663	
1664			Partitions are handled in the same way as for IDE
1665			disks (see major number 3) except that the limit on
1666			partitions is 15.
1667	
1668	 93 char
1669	
1670	 93 block	NAND Flash Translation Layer filesystem
1671			  0 = /dev/nftla	First NFTL layer
1672			 16 = /dev/nftlb	Second NFTL layer
1673			    ...
1674			240 = /dev/nftlp	16th NTFL layer
1675	
1676	 94 char
1677	
1678	 94 block	IBM S/390 DASD block storage
1679	    		  0 = /dev/dasda First DASD device, major
1680	    		  1 = /dev/dasda1 First DASD device, block 1
1681		    	  2 = /dev/dasda2 First DASD device, block 2
1682	    		  3 = /dev/dasda3 First DASD device, block 3
1683	    		  4 = /dev/dasdb Second DASD device, major
1684	    		  5 = /dev/dasdb1 Second DASD device, block 1
1685	    		  6 = /dev/dasdb2 Second DASD device, block 2
1686	    		  7 = /dev/dasdb3 Second DASD device, block 3
1687			    ...
1688	
1689	 95 char	IP filter
1690			  0 = /dev/ipl		Filter control device/log file
1691			  1 = /dev/ipnat	NAT control device/log file
1692			  2 = /dev/ipstate	State information log file
1693			  3 = /dev/ipauth	Authentication control device/log file
1694			    ...
1695	
1696	 96 char	Parallel port ATAPI tape devices
1697			  0 = /dev/pt0		First parallel port ATAPI tape
1698			  1 = /dev/pt1		Second parallel port ATAPI tape
1699			    ...
1700			128 = /dev/npt0		First p.p. ATAPI tape, no rewind
1701			129 = /dev/npt1		Second p.p. ATAPI tape, no rewind
1702			    ...
1703	
1704	 96 block	Inverse NAND Flash Translation Layer
1705			  0 = /dev/inftla First INFTL layer
1706			 16 = /dev/inftlb Second INFTL layer
1707			    ...
1708			240 = /dev/inftlp	16th INTFL layer
1709	
1710	 97 char	Parallel port generic ATAPI interface
1711			  0 = /dev/pg0		First parallel port ATAPI device
1712			  1 = /dev/pg1		Second parallel port ATAPI device
1713			  2 = /dev/pg2		Third parallel port ATAPI device
1714			  3 = /dev/pg3		Fourth parallel port ATAPI device
1715	
1716			These devices support the same API as the generic SCSI
1717			devices.
1718	
1719	 98 char	Control and Measurement Device (comedi)
1720			  0 = /dev/comedi0	First comedi device
1721			  1 = /dev/comedi1	Second comedi device
1722			    ...
1723	
1724			See http://stm.lbl.gov/comedi or http://www.llp.fu-berlin.de/.
1725	
1726	 98 block	User-mode virtual block device
1727			  0 = /dev/ubda		First user-mode block device
1728			 16 = /dev/udbb		Second user-mode block device
1729			    ...
1730	
1731			Partitions are handled in the same way as for IDE
1732			disks (see major number 3) except that the limit on
1733			partitions is 15.
1734	
1735			This device is used by the user-mode virtual kernel port.
1736	
1737	 99 char	Raw parallel ports
1738			  0 = /dev/parport0	First parallel port
1739			  1 = /dev/parport1	Second parallel port
1740			    ...
1741	
1742	 99 block	JavaStation flash disk
1743			  0 = /dev/jsfd		JavaStation flash disk
1744	
1745	100 char	Telephony for Linux
1746			  0 = /dev/phone0	First telephony device
1747			  1 = /dev/phone1	Second telephony device
1748			    ...
1749	
1750	101 char	Motorola DSP 56xxx board
1751			  0 = /dev/mdspstat	Status information
1752			  1 = /dev/mdsp1	First DSP board I/O controls
1753			    ...
1754			 16 = /dev/mdsp16	16th DSP board I/O controls
1755	
1756	101 block	AMI HyperDisk RAID controller
1757			  0 = /dev/amiraid/ar0	First array whole disk
1758			 16 = /dev/amiraid/ar1	Second array whole disk
1759			    ...
1760			240 = /dev/amiraid/ar15	16th array whole disk
1761	
1762			For each device, partitions are added as:
1763			  0 = /dev/amiraid/ar?	  Whole disk
1764			  1 = /dev/amiraid/ar?p1  First partition
1765			  2 = /dev/amiraid/ar?p2  Second partition
1766			    ...
1767			 15 = /dev/amiraid/ar?p15 15th partition
1768	
1769	102 char
1770	
1771	102 block	Compressed block device
1772			  0 = /dev/cbd/a	First compressed block device, whole device
1773			 16 = /dev/cbd/b	Second compressed block device, whole device
1774			    ...
1775			240 = /dev/cbd/p	16th compressed block device, whole device
1776	
1777			Partitions are handled in the same way as for IDE
1778			disks (see major number 3) except that the limit on
1779			partitions is 15.
1780	
1781	103 char	Arla network file system
1782			  0 = /dev/nnpfs0	First NNPFS device
1783			  1 = /dev/nnpfs1	Second NNPFS device
1784	
1785			Arla is a free clone of the Andrew File System, AFS.
1786			The NNPFS device gives user mode filesystem
1787			implementations a kernel presence for caching and easy
1788			mounting.  For more information about the project,
1789			write to <arla-drinkers[AT]stacken.kth[DOT]se> or see
1790			http://www.stacken.kth.se/project/arla/
1791	
1792	103 block	Audit device
1793			  0 = /dev/audit	Audit device
1794	
1795	104 char	Flash BIOS support
1796	
1797	104 block	Compaq Next Generation Drive Array, first controller
1798			  0 = /dev/cciss/c0d0	First logical drive, whole disk
1799			 16 = /dev/cciss/c0d1	Second logical drive, whole disk
1800			    ...
1801			240 = /dev/cciss/c0d15	16th logical drive, whole disk
1802	
1803			Partitions are handled the same way as for Mylex
1804			DAC960 (see major number 48) except that the limit on
1805			partitions is 15.
1806	
1807	105 char	Comtrol VS-1000 serial controller
1808			  0 = /dev/ttyV0	First VS-1000 port
1809			  1 = /dev/ttyV1	Second VS-1000 port
1810			    ...
1811	
1812	105 block	Compaq Next Generation Drive Array, second controller
1813			  0 = /dev/cciss/c1d0	First logical drive, whole disk
1814			 16 = /dev/cciss/c1d1	Second logical drive, whole disk
1815			    ...
1816			240 = /dev/cciss/c1d15	16th logical drive, whole disk
1817	
1818			Partitions are handled the same way as for Mylex
1819			DAC960 (see major number 48) except that the limit on
1820			partitions is 15.
1821	
1822	106 char	Comtrol VS-1000 serial controller - alternate devices
1823			  0 = /dev/cuv0		First VS-1000 port
1824			  1 = /dev/cuv1		Second VS-1000 port
1825			    ...
1826	
1827	106 block	Compaq Next Generation Drive Array, third controller
1828			  0 = /dev/cciss/c2d0	First logical drive, whole disk
1829			 16 = /dev/cciss/c2d1	Second logical drive, whole disk
1830			    ...
1831			240 = /dev/cciss/c2d15	16th logical drive, whole disk
1832	
1833			Partitions are handled the same way as for Mylex
1834			DAC960 (see major number 48) except that the limit on
1835			partitions is 15.
1836	
1837	107 char	3Dfx Voodoo Graphics device
1838			  0 = /dev/3dfx		Primary 3Dfx graphics device
1839	
1840	107 block	Compaq Next Generation Drive Array, fourth controller
1841			  0 = /dev/cciss/c3d0	First logical drive, whole disk
1842			 16 = /dev/cciss/c3d1	Second logical drive, whole disk
1843			    ...
1844			240 = /dev/cciss/c3d15	16th logical drive, whole disk
1845	
1846			Partitions are handled the same way as for Mylex
1847			DAC960 (see major number 48) except that the limit on
1848			partitions is 15.
1849	
1850	108 char	Device independent PPP interface
1851			  0 = /dev/ppp		Device independent PPP interface
1852	
1853	108 block	Compaq Next Generation Drive Array, fifth controller
1854			  0 = /dev/cciss/c4d0	First logical drive, whole disk
1855			 16 = /dev/cciss/c4d1	Second logical drive, whole disk
1856			    ...
1857			240 = /dev/cciss/c4d15	16th logical drive, whole disk
1858	
1859			Partitions are handled the same way as for Mylex
1860			DAC960 (see major number 48) except that the limit on
1861			partitions is 15.
1862	
1863	109 char	Reserved for logical volume manager
1864	
1865	109 block	Compaq Next Generation Drive Array, sixth controller
1866			  0 = /dev/cciss/c5d0	First logical drive, whole disk
1867			 16 = /dev/cciss/c5d1	Second logical drive, whole disk
1868			    ...
1869			240 = /dev/cciss/c5d15	16th logical drive, whole disk
1870	
1871			Partitions are handled the same way as for Mylex
1872			DAC960 (see major number 48) except that the limit on
1873			partitions is 15.
1874	
1875	110 char	miroMEDIA Surround board
1876			  0 = /dev/srnd0	First miroMEDIA Surround board
1877			  1 = /dev/srnd1	Second miroMEDIA Surround board
1878			    ...
1879	
1880	110 block	Compaq Next Generation Drive Array, seventh controller
1881			  0 = /dev/cciss/c6d0	First logical drive, whole disk
1882			 16 = /dev/cciss/c6d1	Second logical drive, whole disk
1883			    ...
1884			240 = /dev/cciss/c6d15	16th logical drive, whole disk
1885	
1886			Partitions are handled the same way as for Mylex
1887			DAC960 (see major number 48) except that the limit on
1888			partitions is 15.
1889	
1890	111 char
1891	
1892	111 block	Compaq Next Generation Drive Array, eighth controller
1893			  0 = /dev/cciss/c7d0	First logical drive, whole disk
1894			 16 = /dev/cciss/c7d1	Second logical drive, whole disk
1895			    ...
1896			240 = /dev/cciss/c7d15	16th logical drive, whole disk
1897	
1898			Partitions are handled the same way as for Mylex
1899			DAC960 (see major number 48) except that the limit on
1900			partitions is 15.
1901	
1902	112 char	ISI serial card
1903			  0 = /dev/ttyM0	First ISI port
1904			  1 = /dev/ttyM1	Second ISI port
1905			    ...
1906	
1907			There is currently a device-naming conflict between
1908			these and PAM multimodems (major 78).
1909	
1910	112 block	IBM iSeries virtual disk
1911			  0 = /dev/iseries/vda	First virtual disk, whole disk
1912			  8 = /dev/iseries/vdb	Second virtual disk, whole disk
1913			    ...
1914			200 = /dev/iseries/vdz	26th virtual disk, whole disk
1915			208 = /dev/iseries/vdaa	27th virtual disk, whole disk
1916			    ...
1917			248 = /dev/iseries/vdaf	32nd virtual disk, whole disk
1918	
1919			Partitions are handled in the same way as for IDE
1920			disks (see major number 3) except that the limit on
1921			partitions is 7.
1922	
1923	113 char	ISI serial card - alternate devices
1924			  0 = /dev/cum0		Callout device for ttyM0
1925			  1 = /dev/cum1		Callout device for ttyM1
1926			    ...
1927	
1928	113 block	IBM iSeries virtual CD-ROM
1929			  0 = /dev/iseries/vcda	First virtual CD-ROM
1930			  1 = /dev/iseries/vcdb	Second virtual CD-ROM
1931			    ...
1932	
1933	114 char	Picture Elements ISE board
1934			  0 = /dev/ise0		First ISE board
1935			  1 = /dev/ise1		Second ISE board
1936			    ...
1937			128 = /dev/isex0	Control node for first ISE board
1938			129 = /dev/isex1	Control node for second ISE board
1939			    ...
1940	
1941			The ISE board is an embedded computer, optimized for
1942			image processing. The /dev/iseN nodes are the general
1943			I/O access to the board, the /dev/isex0 nodes command
1944			nodes used to control the board.
1945	
1946	114 block       IDE BIOS powered software RAID interfaces such as the
1947	                Promise Fastrak
1948	
1949	                  0 = /dev/ataraid/d0
1950	                  1 = /dev/ataraid/d0p1
1951	                  2 = /dev/ataraid/d0p2
1952	                  ...
1953	                 16 = /dev/ataraid/d1
1954	                 17 = /dev/ataraid/d1p1
1955	                 18 = /dev/ataraid/d1p2
1956	                  ...
1957	                255 = /dev/ataraid/d15p15
1958	
1959			Partitions are handled in the same way as for IDE
1960			disks (see major number 3) except that the limit on
1961			partitions is 15.
1962	
1963	115 char	TI link cable devices (115 was formerly the console driver speaker)
1964			  0 = /dev/tipar0    Parallel cable on first parallel port
1965			  ...
1966			  7 = /dev/tipar7    Parallel cable on seventh parallel port
1967	
1968			  8 = /dev/tiser0    Serial cable on first serial port
1969			  ...
1970			 15 = /dev/tiser7    Serial cable on seventh serial port
1971	
1972			 16 = /dev/tiusb0    First USB cable
1973			  ...
1974			 47 = /dev/tiusb31   32nd USB cable
1975	
1976	115 block       NetWare (NWFS) Devices (0-255)
1977	
1978	                The NWFS (NetWare) devices are used to present a
1979	                collection of NetWare Mirror Groups or NetWare
1980	                Partitions as a logical storage segment for
1981	                use in mounting NetWare volumes.  A maximum of
1982	                256 NetWare volumes can be supported in a single
1983	                machine.
1984	
1985	                http://www.kernel.org/pub/linux/kernel/people/jmerkey/nwfs
1986	
1987	                0 = /dev/nwfs/v0    First NetWare (NWFS) Logical Volume
1988	                1 = /dev/nwfs/v1    Second NetWare (NWFS) Logical Volume
1989	                2 = /dev/nwfs/v2    Third NetWare (NWFS) Logical Volume
1990	                      ...
1991	                255 = /dev/nwfs/v255    Last NetWare (NWFS) Logical Volume
1992	
1993	116 char	Advanced Linux Sound Driver (ALSA)
1994	
1995	116 block       MicroMemory battery backed RAM adapter (NVRAM)
1996	                Supports 16 boards, 15 partitions each.
1997	                Requested by neilb at cse.unsw.edu.au.
1998	
1999			 0 = /dev/umem/d0      Whole of first board
2000			 1 = /dev/umem/d0p1    First partition of first board
2001			 2 = /dev/umem/d0p2    Second partition of first board
2002			15 = /dev/umem/d0p15   15th partition of first board
2003	
2004			16 = /dev/umem/d1      Whole of second board
2005			17 = /dev/umem/d1p1    First partition of second board
2006			    ...
2007			255= /dev/umem/d15p15  15th partition of 16th board.
2008	
2009	117 char	COSA/SRP synchronous serial card
2010			  0 = /dev/cosa0c0	1st board, 1st channel
2011			  1 = /dev/cosa0c1	1st board, 2nd channel
2012			    ...
2013			 16 = /dev/cosa1c0	2nd board, 1st channel
2014			 17 = /dev/cosa1c1	2nd board, 2nd channel
2015			    ...
2016	
2017	117 block       Enterprise Volume Management System (EVMS)
2018	
2019	                The EVMS driver uses a layered, plug-in model to provide
2020	                unparalleled flexibility and extensibility in managing
2021	                storage.  This allows for easy expansion or customization
2022	                of various levels of volume management.  Requested by
2023	                Mark Peloquin (peloquin at us.ibm.com).
2024	
2025	                Note: EVMS populates and manages all the devnodes in
2026	                /dev/evms.
2027	
2028	                http://sf.net/projects/evms
2029	
2030	                  0 = /dev/evms/block_device   EVMS block device
2031	                  1 = /dev/evms/legacyname1    First EVMS legacy device
2032	                  2 = /dev/evms/legacyname2    Second EVMS legacy device
2033	                    ...
2034	                    Both ranges can grow (down or up) until they meet.
2035	                    ...
2036	                254 = /dev/evms/EVMSname2      Second EVMS native device
2037	                255 = /dev/evms/EVMSname1      First EVMS native device
2038	
2039	                Note: legacyname(s) are derived from the normal legacy
2040	                device names.  For example, /dev/hda5 would become
2041	                /dev/evms/hda5.
2042	
2043	118 char	IBM Cryptographic Accelerator
2044			  0 = /dev/ica	Virtual interface to all IBM Crypto Accelerators
2045			  1 = /dev/ica0	IBMCA Device 0
2046			  2 = /dev/ica1	IBMCA Device 1
2047			    ...
2048	
2049	119 char	VMware virtual network control
2050			  0 = /dev/vnet0	1st virtual network
2051			  1 = /dev/vnet1	2nd virtual network
2052			    ...
2053	
2054	120-127 char	LOCAL/EXPERIMENTAL USE
2055	
2056	120-127 block	LOCAL/EXPERIMENTAL USE
2057			Allocated for local/experimental use.  For devices not
2058			assigned official numbers, these ranges should be
2059			used in order to avoid conflicting with future assignments.
2060	
2061	128-135 char	Unix98 PTY masters
2062	
2063			These devices should not have corresponding device
2064			nodes; instead they should be accessed through the
2065			/dev/ptmx cloning interface.
2066	
2067	128 block       SCSI disk devices (128-143)
2068	                  0 = /dev/sddy         129th SCSI disk whole disk
2069	                 16 = /dev/sddz         130th SCSI disk whole disk
2070	                 32 = /dev/sdea         131th SCSI disk whole disk
2071	                    ...
2072	                240 = /dev/sden         144th SCSI disk whole disk
2073	
2074			Partitions are handled in the same way as for IDE
2075			disks (see major number 3) except that the limit on
2076			partitions is 15.
2077	
2078	129 block       SCSI disk devices (144-159)
2079	                  0 = /dev/sdeo         145th SCSI disk whole disk
2080	                 16 = /dev/sdep         146th SCSI disk whole disk
2081	                 32 = /dev/sdeq         147th SCSI disk whole disk
2082	                    ...
2083	                240 = /dev/sdfd         160th SCSI disk whole disk
2084	
2085			Partitions are handled in the same way as for IDE
2086			disks (see major number 3) except that the limit on
2087			partitions is 15.
2088	
2089	130 char 	(Misc devices)
2090	
2091	130 block       SCSI disk devices (160-175)
2092	                  0 = /dev/sdfe         161st SCSI disk whole disk
2093	                 16 = /dev/sdff         162nd SCSI disk whole disk
2094	                 32 = /dev/sdfg         163rd SCSI disk whole disk
2095	                    ...
2096	                240 = /dev/sdft         176th SCSI disk whole disk
2097	
2098			Partitions are handled in the same way as for IDE
2099			disks (see major number 3) except that the limit on
2100			partitions is 15.
2101	
2102	131 block       SCSI disk devices (176-191)
2103	                  0 = /dev/sdfu         177th SCSI disk whole disk
2104	                 16 = /dev/sdfv         178th SCSI disk whole disk
2105	                 32 = /dev/sdfw         179th SCSI disk whole disk
2106	                    ...
2107	                240 = /dev/sdgj         192nd SCSI disk whole disk
2108	
2109			Partitions are handled in the same way as for IDE
2110			disks (see major number 3) except that the limit on
2111			partitions is 15.
2112	
2113	132 block       SCSI disk devices (192-207)
2114	                  0 = /dev/sdgk         193rd SCSI disk whole disk
2115	                 16 = /dev/sdgl         194th SCSI disk whole disk
2116	                 32 = /dev/sdgm         195th SCSI disk whole disk
2117	                    ...
2118	                240 = /dev/sdgz         208th SCSI disk whole disk
2119	
2120			Partitions are handled in the same way as for IDE
2121			disks (see major number 3) except that the limit on
2122			partitions is 15.
2123	
2124	133 block       SCSI disk devices (208-223)
2125	                  0 = /dev/sdha         209th SCSI disk whole disk
2126	                 16 = /dev/sdhb         210th SCSI disk whole disk
2127	                 32 = /dev/sdhc         211th SCSI disk whole disk
2128	                    ...
2129	                240 = /dev/sdhp         224th SCSI disk whole disk
2130	
2131			Partitions are handled in the same way as for IDE
2132			disks (see major number 3) except that the limit on
2133			partitions is 15.
2134	
2135	134 block       SCSI disk devices (224-239)
2136	                  0 = /dev/sdhq         225th SCSI disk whole disk
2137	                 16 = /dev/sdhr         226th SCSI disk whole disk
2138	                 32 = /dev/sdhs         227th SCSI disk whole disk
2139	                    ...
2140	                240 = /dev/sdif         240th SCSI disk whole disk
2141	
2142			Partitions are handled in the same way as for IDE
2143			disks (see major number 3) except that the limit on
2144			partitions is 15.
2145	
2146	135 block       SCSI disk devices (240-255)
2147	                  0 = /dev/sdig         241st SCSI disk whole disk
2148	                 16 = /dev/sdih         242nd SCSI disk whole disk
2149	                 32 = /dev/sdih         243rd SCSI disk whole disk
2150	                    ...
2151	                240 = /dev/sdiv         256th SCSI disk whole disk
2152	
2153			Partitions are handled in the same way as for IDE
2154			disks (see major number 3) except that the limit on
2155			partitions is 15.
2156	
2157	136-143 char	Unix98 PTY slaves
2158			  0 = /dev/pts/0	First Unix98 pseudo-TTY
2159			  1 = /dev/pts/1	Second Unix98 pseudo-TTY
2160			    ...
2161	
2162			These device nodes are automatically generated with
2163			the proper permissions and modes by mounting the
2164			devpts filesystem onto /dev/pts with the appropriate
2165			mount options (distribution dependent, however, on
2166			*most* distributions the appropriate options are
2167			"mode=0620,gid=<gid of the "tty" group>".)
2168	
2169	136 block	Mylex DAC960 PCI RAID controller; ninth controller
2170			  0 = /dev/rd/c8d0	First disk, whole disk
2171			  8 = /dev/rd/c8d1	Second disk, whole disk
2172			    ...
2173			248 = /dev/rd/c8d31	32nd disk, whole disk
2174	
2175			Partitions are handled as for major 48.
2176	
2177	137 block	Mylex DAC960 PCI RAID controller; tenth controller
2178			  0 = /dev/rd/c9d0	First disk, whole disk
2179			  8 = /dev/rd/c9d1	Second disk, whole disk
2180			    ...
2181			248 = /dev/rd/c9d31	32nd disk, whole disk
2182	
2183			Partitions are handled as for major 48.
2184	
2185	138 block	Mylex DAC960 PCI RAID controller; eleventh controller
2186			  0 = /dev/rd/c10d0	First disk, whole disk
2187			  8 = /dev/rd/c10d1	Second disk, whole disk
2188			    ...
2189			248 = /dev/rd/c10d31	32nd disk, whole disk
2190	
2191			Partitions are handled as for major 48.
2192	
2193	139 block	Mylex DAC960 PCI RAID controller; twelfth controller
2194			  0 = /dev/rd/c11d0	First disk, whole disk
2195			  8 = /dev/rd/c11d1	Second disk, whole disk
2196			    ...
2197			248 = /dev/rd/c11d31	32nd disk, whole disk
2198	
2199			Partitions are handled as for major 48.
2200	
2201	140 block	Mylex DAC960 PCI RAID controller; thirteenth controller
2202			  0 = /dev/rd/c12d0	First disk, whole disk
2203			  8 = /dev/rd/c12d1	Second disk, whole disk
2204			    ...
2205			248 = /dev/rd/c12d31	32nd disk, whole disk
2206	
2207			Partitions are handled as for major 48.
2208	
2209	141 block	Mylex DAC960 PCI RAID controller; fourteenth controller
2210			  0 = /dev/rd/c13d0	First disk, whole disk
2211			  8 = /dev/rd/c13d1	Second disk, whole disk
2212			    ...
2213			248 = /dev/rd/c13d31	32nd disk, whole disk
2214	
2215			Partitions are handled as for major 48.
2216	
2217	142 block	Mylex DAC960 PCI RAID controller; fifteenth controller
2218			  0 = /dev/rd/c14d0	First disk, whole disk
2219			  8 = /dev/rd/c14d1	Second disk, whole disk
2220			    ...
2221			248 = /dev/rd/c14d31	32nd disk, whole disk
2222	
2223			Partitions are handled as for major 48.
2224	
2225	143 block	Mylex DAC960 PCI RAID controller; sixteenth controller
2226			  0 = /dev/rd/c15d0	First disk, whole disk
2227			  8 = /dev/rd/c15d1	Second disk, whole disk
2228			    ...
2229			248 = /dev/rd/c15d31	32nd disk, whole disk
2230	
2231			Partitions are handled as for major 48.
2232	
2233	144 char	Encapsulated PPP
2234			  0 = /dev/pppox0	First PPP over Ethernet
2235			    ...
2236			 63 = /dev/pppox63	64th PPP over Ethernet
2237	
2238			This is primarily used for ADSL.
2239	
2240			The SST 5136-DN DeviceNet interface driver has been
2241			relocated to major 183 due to an unfortunate conflict.
2242	
2243	144 block	Expansion Area #1 for more non-device (e.g. NFS) mounts
2244			  0 = mounted device 256
2245			255 = mounted device 511
2246	
2247	145 char	SAM9407-based soundcard
2248			  0 = /dev/sam0_mixer
2249			  1 = /dev/sam0_sequencer
2250			  2 = /dev/sam0_midi00
2251			  3 = /dev/sam0_dsp
2252			  4 = /dev/sam0_audio
2253			  6 = /dev/sam0_sndstat
2254			 18 = /dev/sam0_midi01
2255			 34 = /dev/sam0_midi02
2256			 50 = /dev/sam0_midi03
2257			 64 = /dev/sam1_mixer
2258			    ...
2259			128 = /dev/sam2_mixer
2260			    ...
2261			192 = /dev/sam3_mixer
2262			    ...
2263	
2264			Device functions match OSS, but offer a number of
2265			addons, which are sam9407 specific.  OSS can be
2266			operated simultaneously, taking care of the codec.
2267	
2268	145 block	Expansion Area #2 for more non-device (e.g. NFS) mounts
2269			  0 = mounted device 512
2270			255 = mounted device 767
2271	
2272	146 char	SYSTRAM SCRAMNet mirrored-memory network
2273			  0 = /dev/scramnet0	First SCRAMNet device
2274			  1 = /dev/scramnet1	Second SCRAMNet device
2275			    ...
2276	
2277	146 block	Expansion Area #3 for more non-device (e.g. NFS) mounts
2278			  0 = mounted device 768
2279			255 = mounted device 1023
2280	
2281	147 char	Aureal Semiconductor Vortex Audio device
2282			  0 = /dev/aureal0	First Aureal Vortex
2283			  1 = /dev/aureal1	Second Aureal Vortex
2284			    ...
2285	
2286	147 block	Distributed Replicated Block Device (DRBD)
2287			  0 = /dev/drbd0	First DRBD device
2288			  1 = /dev/drbd1	Second DRBD device
2289			    ...
2290	
2291	148 char	Technology Concepts serial card
2292			  0 = /dev/ttyT0	First TCL port
2293			  1 = /dev/ttyT1	Second TCL port
2294			    ...
2295	
2296	149 char	Technology Concepts serial card - alternate devices
2297			  0 = /dev/cut0		Callout device for ttyT0
2298			  1 = /dev/cut0		Callout device for ttyT1
2299			    ...
2300	
2301	150 char	Real-Time Linux FIFOs
2302			  0 = /dev/rtf0		First RTLinux FIFO
2303			  1 = /dev/rtf1		Second RTLinux FIFO
2304			    ...
2305	
2306	151 char	DPT I2O SmartRaid V controller
2307			  0 = /dev/dpti0	First DPT I2O adapter
2308			  1 = /dev/dpti1	Second DPT I2O adapter
2309			    ...
2310	
2311	152 char	EtherDrive Control Device
2312			  0 = /dev/etherd/ctl	Connect/Disconnect an EtherDrive
2313			  1 = /dev/etherd/err	Monitor errors
2314			  2 = /dev/etherd/raw	Raw AoE packet monitor
2315	
2316	152 block	EtherDrive Block Devices
2317			  0 = /dev/etherd/0	EtherDrive 0
2318			    ...
2319			255 = /dev/etherd/255	EtherDrive 255
2320	
2321	153 char	SPI Bus Interface (sometimes referred to as MicroWire)
2322			  0 = /dev/spi0		First SPI device on the bus
2323			  1 = /dev/spi1		Second SPI device on the bus
2324			    ...
2325			 15 = /dev/spi15	Sixteenth SPI device on the bus
2326	
2327	153 block	Enhanced Metadisk RAID (EMD) storage units
2328			  0 = /dev/emd/0	First unit
2329			  1 = /dev/emd/0p1	Partition 1 on First unit
2330			  2 = /dev/emd/0p2	Partition 2 on First unit
2331			    ...
2332			 15 = /dev/emd/0p15	Partition 15 on First unit
2333	
2334			 16 = /dev/emd/1	Second unit
2335			 32 = /dev/emd/2	Third unit
2336			    ...
2337			240 = /dev/emd/15	Sixteenth unit
2338	
2339			Partitions are handled in the same way as for IDE
2340			disks (see major number 3) except that the limit on
2341			partitions is 15.
2342	
2343	154 char	Specialix RIO serial card
2344			  0 = /dev/ttySR0	First RIO port
2345			    ...
2346			255 = /dev/ttySR255	256th RIO port
2347	
2348	155 char	Specialix RIO serial card - alternate devices
2349			  0 = /dev/cusr0	Callout device for ttySR0
2350			    ...
2351			255 = /dev/cusr255	Callout device for ttySR255
2352	
2353	156 char	Specialix RIO serial card
2354			  0 = /dev/ttySR256	257th RIO port
2355			    ...
2356			255 = /dev/ttySR511	512th RIO port
2357	
2358	157 char	Specialix RIO serial card - alternate devices
2359			  0 = /dev/cusr256	Callout device for ttySR256
2360			    ...
2361			255 = /dev/cusr511	Callout device for ttySR511
2362	
2363	158 char	Dialogic GammaLink fax driver
2364			  0 = /dev/gfax0	GammaLink channel 0
2365			  1 = /dev/gfax1	GammaLink channel 1
2366			    ...
2367	
2368	159 char	RESERVED
2369	
2370	159 block	RESERVED
2371	
2372	160 char	General Purpose Instrument Bus (GPIB)
2373			  0 = /dev/gpib0	First GPIB bus
2374			  1 = /dev/gpib1	Second GPIB bus
2375			    ...
2376	
2377	160 block       Carmel 8-port SATA Disks on First Controller
2378			  0 = /dev/carmel/0     SATA disk 0 whole disk
2379			  1 = /dev/carmel/0p1   SATA disk 0 partition 1
2380			    ...
2381			 31 = /dev/carmel/0p31  SATA disk 0 partition 31
2382	
2383			 32 = /dev/carmel/1     SATA disk 1 whole disk
2384			 64 = /dev/carmel/2     SATA disk 2 whole disk
2385			    ...
2386			224 = /dev/carmel/7     SATA disk 7 whole disk
2387	
2388			Partitions are handled in the same way as for IDE
2389			disks (see major number 3) except that the limit on
2390			partitions is 31.
2391	
2392	161 char	IrCOMM devices (IrDA serial/parallel emulation)
2393			  0 = /dev/ircomm0	First IrCOMM device
2394			  1 = /dev/ircomm1	Second IrCOMM device
2395			    ...
2396			 16 = /dev/irlpt0	First IrLPT device
2397			 17 = /dev/irlpt1	Second IrLPT device
2398			    ...
2399	
2400	161 block       Carmel 8-port SATA Disks on Second Controller
2401			  0 = /dev/carmel/8     SATA disk 8 whole disk
2402			  1 = /dev/carmel/8p1   SATA disk 8 partition 1
2403			    ...
2404			 31 = /dev/carmel/8p31  SATA disk 8 partition 31
2405	
2406			 32 = /dev/carmel/9     SATA disk 9 whole disk
2407			 64 = /dev/carmel/10    SATA disk 10 whole disk
2408			    ...
2409			224 = /dev/carmel/15    SATA disk 15 whole disk
2410	
2411			Partitions are handled in the same way as for IDE
2412			disks (see major number 3) except that the limit on
2413			partitions is 31.
2414	
2415	162 char	Raw block device interface
2416			  0 = /dev/rawctl	Raw I/O control device
2417			  1 = /dev/raw/raw1	First raw I/O device
2418			  2 = /dev/raw/raw2	Second raw I/O device
2419			    ...
2420	
2421	163 char
2422	
2423	164 char	Chase Research AT/PCI-Fast serial card
2424			  0 = /dev/ttyCH0	AT/PCI-Fast board 0, port 0
2425			    ...
2426			 15 = /dev/ttyCH15	AT/PCI-Fast board 0, port 15
2427			 16 = /dev/ttyCH16	AT/PCI-Fast board 1, port 0
2428			    ...
2429			 31 = /dev/ttyCH31	AT/PCI-Fast board 1, port 15
2430			 32 = /dev/ttyCH32	AT/PCI-Fast board 2, port 0
2431			    ...
2432			 47 = /dev/ttyCH47	AT/PCI-Fast board 2, port 15
2433			 48 = /dev/ttyCH48	AT/PCI-Fast board 3, port 0
2434			    ...
2435			 63 = /dev/ttyCH63	AT/PCI-Fast board 3, port 15
2436	
2437	165 char	Chase Research AT/PCI-Fast serial card - alternate devices
2438			  0 = /dev/cuch0	Callout device for ttyCH0
2439			    ...
2440			 63 = /dev/cuch63	Callout device for ttyCH63
2441	
2442	166 char	ACM USB modems
2443			  0 = /dev/ttyACM0	First ACM modem
2444			  1 = /dev/ttyACM1	Second ACM modem
2445			    ...
2446	
2447	167 char	ACM USB modems - alternate devices
2448			  0 = /dev/cuacm0	Callout device for ttyACM0
2449			  1 = /dev/cuacm1	Callout device for ttyACM1
2450			    ...
2451	
2452	168 char	Eracom CSA7000 PCI encryption adaptor
2453			  0 = /dev/ecsa0	First CSA7000
2454			  1 = /dev/ecsa1	Second CSA7000
2455			    ...
2456	
2457	169 char	Eracom CSA8000 PCI encryption adaptor
2458			  0 = /dev/ecsa8-0	First CSA8000
2459			  1 = /dev/ecsa8-1	Second CSA8000
2460			    ...
2461	
2462	170 char	AMI MegaRAC remote access controller
2463			  0 = /dev/megarac0	First MegaRAC card
2464			  1 = /dev/megarac1	Second MegaRAC card
2465			    ...
2466	
2467	171 char	Reserved for IEEE 1394 (Firewire)
2468	
2469	172 char	Moxa Intellio serial card
2470			  0 = /dev/ttyMX0	First Moxa port
2471			  1 = /dev/ttyMX1	Second Moxa port
2472			    ...
2473			127 = /dev/ttyMX127	128th Moxa port
2474			128 = /dev/moxactl	Moxa control port
2475	
2476	173 char	Moxa Intellio serial card - alternate devices
2477			  0 = /dev/cumx0	Callout device for ttyMX0
2478			  1 = /dev/cumx1	Callout device for ttyMX1
2479			    ...
2480			127 = /dev/cumx127	Callout device for ttyMX127
2481	
2482	174 char	SmartIO serial card
2483			  0 = /dev/ttySI0	First SmartIO port
2484			  1 = /dev/ttySI1	Second SmartIO port
2485			    ...
2486	
2487	175 char	SmartIO serial card - alternate devices
2488			  0 = /dev/cusi0	Callout device for ttySI0
2489			  1 = /dev/cusi1	Callout device for ttySI1
2490			    ...
2491	
2492	176 char	nCipher nFast PCI crypto accelerator
2493			  0 = /dev/nfastpci0	First nFast PCI device
2494			  1 = /dev/nfastpci1	First nFast PCI device
2495			    ...
2496	
2497	177 char	TI PCILynx memory spaces
2498			  0 = /dev/pcilynx/aux0	 AUX space of first PCILynx card
2499			    ...
2500			 15 = /dev/pcilynx/aux15 AUX space of 16th PCILynx card
2501			 16 = /dev/pcilynx/rom0	 ROM space of first PCILynx card
2502			    ...
2503			 31 = /dev/pcilynx/rom15 ROM space of 16th PCILynx card
2504			 32 = /dev/pcilynx/ram0	 RAM space of first PCILynx card
2505			    ...
2506			 47 = /dev/pcilynx/ram15 RAM space of 16th PCILynx card
2507	
2508	178 char	Giganet cLAN1xxx virtual interface adapter
2509			  0 = /dev/clanvi0	First cLAN adapter
2510			  1 = /dev/clanvi1	Second cLAN adapter
2511			    ...
2512	
2513	179 block       MMC block devices
2514			  0 = /dev/mmcblk0      First SD/MMC card
2515			  1 = /dev/mmcblk0p1    First partition on first MMC card
2516			  8 = /dev/mmcblk1      Second SD/MMC card
2517			    ...
2518	
2519	179 char	CCube DVXChip-based PCI products
2520			  0 = /dev/dvxirq0	First DVX device
2521			  1 = /dev/dvxirq1	Second DVX device
2522			    ...
2523	
2524	180 char	USB devices
2525			  0 = /dev/usb/lp0	First USB printer
2526			    ...
2527			 15 = /dev/usb/lp15	16th USB printer
2528			 48 = /dev/usb/scanner0	First USB scanner
2529			    ...
2530			 63 = /dev/usb/scanner15 16th USB scanner
2531			 64 = /dev/usb/rio500	Diamond Rio 500
2532			 65 = /dev/usb/usblcd	USBLCD Interface (info[AT]usblcd[DOT]de)
2533			 66 = /dev/usb/cpad0	Synaptics cPad (mouse/LCD)
2534			 96 = /dev/usb/hiddev0	1st USB HID device
2535			    ...
2536			111 = /dev/usb/hiddev15	16th USB HID device
2537			112 = /dev/usb/auer0	1st auerswald ISDN device
2538			    ...
2539			127 = /dev/usb/auer15	16th auerswald ISDN device
2540			128 = /dev/usb/brlvgr0	First Braille Voyager device
2541			    ...
2542			131 = /dev/usb/brlvgr3	Fourth Braille Voyager device
2543			132 = /dev/usb/idmouse	ID Mouse (fingerprint scanner) device
2544			133 = /dev/usb/sisusbvga1	First SiSUSB VGA device
2545			    ...
2546			140 = /dev/usb/sisusbvga8	Eighth SISUSB VGA device
2547			144 = /dev/usb/lcd	USB LCD device
2548			160 = /dev/usb/legousbtower0	1st USB Legotower device
2549			    ...
2550			175 = /dev/usb/legousbtower15	16th USB Legotower device
2551			176 = /dev/usb/usbtmc1	First USB TMC device
2552			   ...
2553			192 = /dev/usb/usbtmc16	16th USB TMC device
2554			240 = /dev/usb/dabusb0	First daubusb device
2555			    ...
2556			243 = /dev/usb/dabusb3	Fourth dabusb device
2557	
2558	180 block	USB block devices
2559			  0 = /dev/uba		First USB block device
2560			  8 = /dev/ubb		Second USB block device
2561			 16 = /dev/ubc		Third USB block device
2562	 		    ...
2563	
2564	181 char	Conrad Electronic parallel port radio clocks
2565			  0 = /dev/pcfclock0	First Conrad radio clock
2566			  1 = /dev/pcfclock1	Second Conrad radio clock
2567			    ...
2568	
2569	182 char	Picture Elements THR2 binarizer
2570			  0 = /dev/pethr0	First THR2 board
2571			  1 = /dev/pethr1	Second THR2 board
2572			    ...
2573	
2574	183 char	SST 5136-DN DeviceNet interface
2575			  0 = /dev/ss5136dn0	First DeviceNet interface
2576			  1 = /dev/ss5136dn1	Second DeviceNet interface
2577			    ...
2578	
2579			This device used to be assigned to major number 144.
2580			It had to be moved due to an unfortunate conflict.
2581	
2582	184 char	Picture Elements' video simulator/sender
2583			  0 = /dev/pevss0	First sender board
2584			  1 = /dev/pevss1	Second sender board
2585			    ...
2586	
2587	185 char	InterMezzo high availability file system
2588			  0 = /dev/intermezzo0	First cache manager
2589			  1 = /dev/intermezzo1	Second cache manager
2590			    ...
2591	
2592			See http://www.inter-mezzo.org/ for more information.
2593	
2594	186 char	Object-based storage control device
2595			  0 = /dev/obd0		First obd control device
2596			  1 = /dev/obd1		Second obd control device
2597			    ...
2598	
2599			See ftp://ftp.lustre.org/pub/obd for code and information.
2600	
2601	187 char	DESkey hardware encryption device
2602			  0 = /dev/deskey0	First DES key
2603			  1 = /dev/deskey1	Second DES key
2604			    ...
2605	
2606	188 char	USB serial converters
2607			  0 = /dev/ttyUSB0	First USB serial converter
2608			  1 = /dev/ttyUSB1	Second USB serial converter
2609			    ...
2610	
2611	189 char	USB serial converters - alternate devices
2612			  0 = /dev/cuusb0	Callout device for ttyUSB0
2613			  1 = /dev/cuusb1	Callout device for ttyUSB1
2614			    ...
2615	
2616	190 char	Kansas City tracker/tuner card
2617			  0 = /dev/kctt0	First KCT/T card
2618			  1 = /dev/kctt1	Second KCT/T card
2619			    ...
2620	
2621	191 char	Reserved for PCMCIA
2622	
2623	192 char	Kernel profiling interface
2624			  0 = /dev/profile	Profiling control device
2625			  1 = /dev/profile0	Profiling device for CPU 0
2626			  2 = /dev/profile1	Profiling device for CPU 1
2627			    ...
2628	
2629	193 char	Kernel event-tracing interface
2630			  0 = /dev/trace	Tracing control device
2631			  1 = /dev/trace0	Tracing device for CPU 0
2632			  2 = /dev/trace1	Tracing device for CPU 1
2633			    ...
2634	
2635	194 char	linVideoStreams (LINVS)
2636			  0 = /dev/mvideo/status0	Video compression status
2637			  1 = /dev/mvideo/stream0	Video stream
2638			  2 = /dev/mvideo/frame0	Single compressed frame
2639			  3 = /dev/mvideo/rawframe0	Raw uncompressed frame
2640			  4 = /dev/mvideo/codec0	Direct codec access
2641			  5 = /dev/mvideo/video4linux0	Video4Linux compatibility
2642	
2643			 16 = /dev/mvideo/status1	Second device
2644			    ...
2645			 32 = /dev/mvideo/status2	Third device
2646			    ...
2647			    ...
2648			240 = /dev/mvideo/status15	16th device
2649			    ...
2650	
2651	195 char	Nvidia graphics devices
2652			  0 = /dev/nvidia0		First Nvidia card
2653			  1 = /dev/nvidia1		Second Nvidia card
2654			    ...
2655			255 = /dev/nvidiactl		Nvidia card control device
2656	
2657	196 char	Tormenta T1 card
2658			  0 = /dev/tor/0		Master control channel for all cards
2659			  1 = /dev/tor/1		First DS0
2660			  2 = /dev/tor/2		Second DS0
2661			    ...
2662			 48 = /dev/tor/48		48th DS0
2663			 49 = /dev/tor/49		First pseudo-channel
2664			 50 = /dev/tor/50		Second pseudo-channel
2665			    ...
2666	
2667	197 char	OpenTNF tracing facility
2668			  0 = /dev/tnf/t0		Trace 0 data extraction
2669			  1 = /dev/tnf/t1		Trace 1 data extraction
2670			    ...
2671			128 = /dev/tnf/status		Tracing facility status
2672			130 = /dev/tnf/trace		Tracing device
2673	
2674	198 char	Total Impact TPMP2 quad coprocessor PCI card
2675			  0 = /dev/tpmp2/0		First card
2676			  1 = /dev/tpmp2/1		Second card
2677			    ...
2678	
2679	199 char	Veritas volume manager (VxVM) volumes
2680			  0 = /dev/vx/rdsk/*/*		First volume
2681			  1 = /dev/vx/rdsk/*/*		Second volume
2682			    ...
2683	
2684	199 block	Veritas volume manager (VxVM) volumes
2685			  0 = /dev/vx/dsk/*/*		First volume
2686			  1 = /dev/vx/dsk/*/*		Second volume
2687			    ...
2688	
2689			The namespace in these directories is maintained by
2690			the user space VxVM software.
2691	
2692	200 char	Veritas VxVM configuration interface
2693	                  0 = /dev/vx/config		Configuration access node
2694	                  1 = /dev/vx/trace		Volume i/o trace access node
2695	                  2 = /dev/vx/iod		Volume i/o daemon access node
2696	                  3 = /dev/vx/info		Volume information access node
2697	                  4 = /dev/vx/task		Volume tasks access node
2698	                  5 = /dev/vx/taskmon		Volume tasks monitor daemon
2699	
2700	201 char	Veritas VxVM dynamic multipathing driver
2701			  0 = /dev/vx/rdmp/*		First multipath device
2702			  1 = /dev/vx/rdmp/*		Second multipath device
2703			    ...
2704	201 block	Veritas VxVM dynamic multipathing driver
2705			  0 = /dev/vx/dmp/*		First multipath device
2706			  1 = /dev/vx/dmp/*		Second multipath device
2707			    ...
2708	
2709			The namespace in these directories is maintained by
2710			the user space VxVM software.
2711	
2712	202 char	CPU model-specific registers
2713			  0 = /dev/cpu/0/msr		MSRs on CPU 0
2714			  1 = /dev/cpu/1/msr		MSRs on CPU 1
2715			    ...
2716	
2717	202 block	Xen Virtual Block Device
2718			  0 = /dev/xvda       First Xen VBD whole disk
2719			  16 = /dev/xvdb      Second Xen VBD whole disk
2720			  32 = /dev/xvdc      Third Xen VBD whole disk
2721			    ...
2722			  240 = /dev/xvdp     Sixteenth Xen VBD whole disk
2723	
2724	                Partitions are handled in the same way as for IDE
2725	                disks (see major number 3) except that the limit on
2726	                partitions is 15.
2727	
2728	203 char	CPU CPUID information
2729			  0 = /dev/cpu/0/cpuid		CPUID on CPU 0
2730			  1 = /dev/cpu/1/cpuid		CPUID on CPU 1
2731			    ...
2732	
2733	204 char	Low-density serial ports
2734			  0 = /dev/ttyLU0		LinkUp Systems L72xx UART - port 0
2735			  1 = /dev/ttyLU1		LinkUp Systems L72xx UART - port 1
2736			  2 = /dev/ttyLU2		LinkUp Systems L72xx UART - port 2
2737			  3 = /dev/ttyLU3		LinkUp Systems L72xx UART - port 3
2738			  4 = /dev/ttyFB0		Intel Footbridge (ARM)
2739			  5 = /dev/ttySA0		StrongARM builtin serial port 0
2740			  6 = /dev/ttySA1		StrongARM builtin serial port 1
2741			  7 = /dev/ttySA2		StrongARM builtin serial port 2
2742			  8 = /dev/ttySC0		SCI serial port (SuperH) - port 0
2743			  9 = /dev/ttySC1		SCI serial port (SuperH) - port 1
2744			 10 = /dev/ttySC2		SCI serial port (SuperH) - port 2
2745			 11 = /dev/ttySC3		SCI serial port (SuperH) - port 3
2746			 12 = /dev/ttyFW0		Firmware console - port 0
2747			 13 = /dev/ttyFW1		Firmware console - port 1
2748			 14 = /dev/ttyFW2		Firmware console - port 2
2749			 15 = /dev/ttyFW3		Firmware console - port 3
2750			 16 = /dev/ttyAM0		ARM "AMBA" serial port 0
2751			    ...
2752			 31 = /dev/ttyAM15		ARM "AMBA" serial port 15
2753			 32 = /dev/ttyDB0		DataBooster serial port 0
2754			    ...
2755			 39 = /dev/ttyDB7		DataBooster serial port 7
2756			 40 = /dev/ttySG0		SGI Altix console port
2757			 41 = /dev/ttySMX0		Motorola i.MX - port 0
2758			 42 = /dev/ttySMX1		Motorola i.MX - port 1
2759			 43 = /dev/ttySMX2		Motorola i.MX - port 2
2760			 44 = /dev/ttyMM0		Marvell MPSC - port 0
2761			 45 = /dev/ttyMM1		Marvell MPSC - port 1
2762			 46 = /dev/ttyCPM0		PPC CPM (SCC or SMC) - port 0
2763			    ...
2764			 47 = /dev/ttyCPM5		PPC CPM (SCC or SMC) - port 5
2765			 50 = /dev/ttyIOC0		Altix serial card
2766			    ...
2767			 81 = /dev/ttyIOC31		Altix serial card
2768			 82 = /dev/ttyVR0		NEC VR4100 series SIU
2769			 83 = /dev/ttyVR1		NEC VR4100 series DSIU
2770			 84 = /dev/ttyIOC84		Altix ioc4 serial card
2771			    ...
2772			 115 = /dev/ttyIOC115		Altix ioc4 serial card
2773			 116 = /dev/ttySIOC0		Altix ioc3 serial card
2774			    ...
2775			 147 = /dev/ttySIOC31		Altix ioc3 serial card
2776			 148 = /dev/ttyPSC0		PPC PSC - port 0
2777			    ...
2778			 153 = /dev/ttyPSC5		PPC PSC - port 5
2779			 154 = /dev/ttyAT0		ATMEL serial port 0
2780			    ...
2781			 169 = /dev/ttyAT15		ATMEL serial port 15
2782			 170 = /dev/ttyNX0		Hilscher netX serial port 0
2783			    ...
2784			 185 = /dev/ttyNX15		Hilscher netX serial port 15
2785			 186 = /dev/ttyJ0		JTAG1 DCC protocol based serial port emulation
2786			 187 = /dev/ttyUL0		Xilinx uartlite - port 0
2787			    ...
2788			 190 = /dev/ttyUL3		Xilinx uartlite - port 3
2789			 191 = /dev/xvc0		Xen virtual console - port 0
2790			 192 = /dev/ttyPZ0		pmac_zilog - port 0
2791			    ...
2792			 195 = /dev/ttyPZ3		pmac_zilog - port 3
2793			 196 = /dev/ttyTX0		TX39/49 serial port 0
2794			    ...
2795			 204 = /dev/ttyTX7		TX39/49 serial port 7
2796			 205 = /dev/ttySC0		SC26xx serial port 0
2797			 206 = /dev/ttySC1		SC26xx serial port 1
2798			 207 = /dev/ttySC2		SC26xx serial port 2
2799			 208 = /dev/ttySC3		SC26xx serial port 3
2800			 209 = /dev/ttyMAX0		MAX3100 serial port 0
2801			 210 = /dev/ttyMAX1		MAX3100 serial port 1
2802			 211 = /dev/ttyMAX2		MAX3100 serial port 2
2803			 212 = /dev/ttyMAX3		MAX3100 serial port 3
2804	
2805	205 char	Low-density serial ports (alternate device)
2806			  0 = /dev/culu0		Callout device for ttyLU0
2807			  1 = /dev/culu1		Callout device for ttyLU1
2808			  2 = /dev/culu2		Callout device for ttyLU2
2809			  3 = /dev/culu3		Callout device for ttyLU3
2810			  4 = /dev/cufb0		Callout device for ttyFB0
2811			  5 = /dev/cusa0		Callout device for ttySA0
2812			  6 = /dev/cusa1		Callout device for ttySA1
2813			  7 = /dev/cusa2		Callout device for ttySA2
2814			  8 = /dev/cusc0		Callout device for ttySC0
2815			  9 = /dev/cusc1		Callout device for ttySC1
2816			 10 = /dev/cusc2		Callout device for ttySC2
2817			 11 = /dev/cusc3		Callout device for ttySC3
2818			 12 = /dev/cufw0		Callout device for ttyFW0
2819			 13 = /dev/cufw1		Callout device for ttyFW1
2820			 14 = /dev/cufw2		Callout device for ttyFW2
2821			 15 = /dev/cufw3		Callout device for ttyFW3
2822			 16 = /dev/cuam0		Callout device for ttyAM0
2823			    ...
2824			 31 = /dev/cuam15		Callout device for ttyAM15
2825			 32 = /dev/cudb0		Callout device for ttyDB0
2826			    ...
2827			 39 = /dev/cudb7		Callout device for ttyDB7
2828			 40 = /dev/cusg0		Callout device for ttySG0
2829			 41 = /dev/ttycusmx0		Callout device for ttySMX0
2830			 42 = /dev/ttycusmx1		Callout device for ttySMX1
2831			 43 = /dev/ttycusmx2		Callout device for ttySMX2
2832			 46 = /dev/cucpm0		Callout device for ttyCPM0
2833			    ...
2834			 49 = /dev/cucpm5		Callout device for ttyCPM5
2835			 50 = /dev/cuioc40		Callout device for ttyIOC40
2836			    ...
2837			 81 = /dev/cuioc431		Callout device for ttyIOC431
2838			 82 = /dev/cuvr0		Callout device for ttyVR0
2839			 83 = /dev/cuvr1		Callout device for ttyVR1
2840	
2841	206 char	OnStream SC-x0 tape devices
2842			  0 = /dev/osst0		First OnStream SCSI tape, mode 0
2843			  1 = /dev/osst1		Second OnStream SCSI tape, mode 0
2844			    ...
2845			 32 = /dev/osst0l		First OnStream SCSI tape, mode 1
2846			 33 = /dev/osst1l		Second OnStream SCSI tape, mode 1
2847			    ...
2848			 64 = /dev/osst0m		First OnStream SCSI tape, mode 2
2849			 65 = /dev/osst1m		Second OnStream SCSI tape, mode 2
2850			    ...
2851			 96 = /dev/osst0a		First OnStream SCSI tape, mode 3
2852			 97 = /dev/osst1a		Second OnStream SCSI tape, mode 3
2853			    ...
2854			128 = /dev/nosst0		No rewind version of /dev/osst0
2855			129 = /dev/nosst1		No rewind version of /dev/osst1
2856			    ...
2857			160 = /dev/nosst0l		No rewind version of /dev/osst0l
2858			161 = /dev/nosst1l		No rewind version of /dev/osst1l
2859			    ...
2860			192 = /dev/nosst0m		No rewind version of /dev/osst0m
2861			193 = /dev/nosst1m		No rewind version of /dev/osst1m
2862			    ...
2863			224 = /dev/nosst0a		No rewind version of /dev/osst0a
2864			225 = /dev/nosst1a		No rewind version of /dev/osst1a
2865			    ...
2866	
2867			The OnStream SC-x0 SCSI tapes do not support the
2868			standard SCSI SASD command set and therefore need
2869			their own driver "osst". Note that the IDE, USB (and
2870			maybe ParPort) versions may be driven via ide-scsi or
2871			usb-storage SCSI emulation and this osst device and
2872			driver as well.  The ADR-x0 drives are QIC-157
2873			compliant and don't need osst.
2874	
2875	207 char	Compaq ProLiant health feature indicate
2876			  0 = /dev/cpqhealth/cpqw	Redirector interface
2877			  1 = /dev/cpqhealth/crom	EISA CROM
2878			  2 = /dev/cpqhealth/cdt	Data Table
2879			  3 = /dev/cpqhealth/cevt	Event Log
2880			  4 = /dev/cpqhealth/casr	Automatic Server Recovery
2881			  5 = /dev/cpqhealth/cecc	ECC Memory
2882			  6 = /dev/cpqhealth/cmca	Machine Check Architecture
2883			  7 = /dev/cpqhealth/ccsm	Deprecated CDT
2884			  8 = /dev/cpqhealth/cnmi	NMI Handling
2885			  9 = /dev/cpqhealth/css	Sideshow Management
2886			 10 = /dev/cpqhealth/cram	CMOS interface
2887			 11 = /dev/cpqhealth/cpci	PCI IRQ interface
2888	
2889	208 char	User space serial ports
2890			  0 = /dev/ttyU0		First user space serial port
2891			  1 = /dev/ttyU1		Second user space serial port
2892			    ...
2893	
2894	209 char	User space serial ports (alternate devices)
2895			  0 = /dev/cuu0			Callout device for ttyU0
2896			  1 = /dev/cuu1			Callout device for ttyU1
2897			    ...
2898	
2899	210 char	SBE, Inc. sync/async serial card
2900			  0 = /dev/sbei/wxcfg0		Configuration device for board 0
2901			  1 = /dev/sbei/dld0		Download device for board 0
2902			  2 = /dev/sbei/wan00		WAN device, port 0, board 0
2903			  3 = /dev/sbei/wan01		WAN device, port 1, board 0
2904			  4 = /dev/sbei/wan02		WAN device, port 2, board 0
2905			  5 = /dev/sbei/wan03		WAN device, port 3, board 0
2906			  6 = /dev/sbei/wanc00		WAN clone device, port 0, board 0
2907			  7 = /dev/sbei/wanc01		WAN clone device, port 1, board 0
2908			  8 = /dev/sbei/wanc02		WAN clone device, port 2, board 0
2909			  9 = /dev/sbei/wanc03		WAN clone device, port 3, board 0
2910			 10 = /dev/sbei/wxcfg1		Configuration device for board 1
2911			 11 = /dev/sbei/dld1		Download device for board 1
2912			 12 = /dev/sbei/wan10		WAN device, port 0, board 1
2913			 13 = /dev/sbei/wan11		WAN device, port 1, board 1
2914			 14 = /dev/sbei/wan12		WAN device, port 2, board 1
2915			 15 = /dev/sbei/wan13		WAN device, port 3, board 1
2916			 16 = /dev/sbei/wanc10		WAN clone device, port 0, board 1
2917			 17 = /dev/sbei/wanc11		WAN clone device, port 1, board 1
2918			 18 = /dev/sbei/wanc12		WAN clone device, port 2, board 1
2919			 19 = /dev/sbei/wanc13		WAN clone device, port 3, board 1
2920			    ...
2921	
2922			Yes, each board is really spaced 10 (decimal) apart.
2923	
2924	211 char	Addinum CPCI1500 digital I/O card
2925			  0 = /dev/addinum/cpci1500/0	First CPCI1500 card
2926			  1 = /dev/addinum/cpci1500/1	Second CPCI1500 card
2927			    ...
2928	
2929	212 char	LinuxTV.org DVB driver subsystem
2930			  0 = /dev/dvb/adapter0/video0    first video decoder of first card
2931			  1 = /dev/dvb/adapter0/audio0    first audio decoder of first card
2932			  2 = /dev/dvb/adapter0/sec0      (obsolete/unused)
2933			  3 = /dev/dvb/adapter0/frontend0 first frontend device of first card
2934			  4 = /dev/dvb/adapter0/demux0    first demux device of first card
2935			  5 = /dev/dvb/adapter0/dvr0      first digital video recoder device of first card
2936			  6 = /dev/dvb/adapter0/ca0       first common access port of first card
2937			  7 = /dev/dvb/adapter0/net0      first network device of first card
2938			  8 = /dev/dvb/adapter0/osd0      first on-screen-display device of first card
2939			  9 = /dev/dvb/adapter0/video1    second video decoder of first card
2940			    ...
2941			 64 = /dev/dvb/adapter1/video0    first video decoder of second card
2942			    ...
2943			128 = /dev/dvb/adapter2/video0    first video decoder of third card
2944			    ...
2945			196 = /dev/dvb/adapter3/video0    first video decoder of fourth card
2946	
2947	216 char	Bluetooth RFCOMM TTY devices
2948			  0 = /dev/rfcomm0		First Bluetooth RFCOMM TTY device
2949			  1 = /dev/rfcomm1		Second Bluetooth RFCOMM TTY device
2950			    ...
2951	
2952	217 char	Bluetooth RFCOMM TTY devices (alternate devices)
2953			  0 = /dev/curf0		Callout device for rfcomm0
2954			  1 = /dev/curf1		Callout device for rfcomm1
2955			    ...
2956	
2957	218 char	The Logical Company bus Unibus/Qbus adapters
2958			  0 = /dev/logicalco/bci/0	First bus adapter
2959			  1 = /dev/logicalco/bci/1	First bus adapter
2960			    ...
2961	
2962	219 char	The Logical Company DCI-1300 digital I/O card
2963			  0 = /dev/logicalco/dci1300/0	First DCI-1300 card
2964			  1 = /dev/logicalco/dci1300/1	Second DCI-1300 card
2965			    ...
2966	
2967	220 char	Myricom Myrinet "GM" board
2968			  0 = /dev/myricom/gm0		First Myrinet GM board
2969			  1 = /dev/myricom/gmp0		First board "root access"
2970			  2 = /dev/myricom/gm1		Second Myrinet GM board
2971			  3 = /dev/myricom/gmp1		Second board "root access"
2972			    ...
2973	
2974	221 char	VME bus
2975			  0 = /dev/bus/vme/m0		First master image
2976			  1 = /dev/bus/vme/m1		Second master image
2977			  2 = /dev/bus/vme/m2		Third master image
2978			  3 = /dev/bus/vme/m3		Fourth master image
2979			  4 = /dev/bus/vme/s0		First slave image
2980			  5 = /dev/bus/vme/s1		Second slave image
2981			  6 = /dev/bus/vme/s2		Third slave image
2982			  7 = /dev/bus/vme/s3		Fourth slave image
2983			  8 = /dev/bus/vme/ctl		Control
2984	
2985			It is expected that all VME bus drivers will use the
2986			same interface.  For interface documentation see
2987			http://www.vmelinux.org/.
2988	
2989	224 char	A2232 serial card
2990			  0 = /dev/ttyY0		First A2232 port
2991			  1 = /dev/ttyY1		Second A2232 port
2992			    ...
2993	
2994	225 char	A2232 serial card (alternate devices)
2995			  0 = /dev/cuy0			Callout device for ttyY0
2996			  1 = /dev/cuy1			Callout device for ttyY1
2997			    ...
2998	
2999	226 char	Direct Rendering Infrastructure (DRI)
3000			  0 = /dev/dri/card0		First graphics card
3001			  1 = /dev/dri/card1		Second graphics card
3002			    ...
3003	
3004	227 char	IBM 3270 terminal Unix tty access
3005			  1 = /dev/3270/tty1		First 3270 terminal
3006			  2 = /dev/3270/tty2		Seconds 3270 terminal
3007			    ...
3008	
3009	228 char	IBM 3270 terminal block-mode access
3010			  0 = /dev/3270/tub		Controlling interface
3011			  1 = /dev/3270/tub1		First 3270 terminal
3012			  2 = /dev/3270/tub2		Second 3270 terminal
3013			    ...
3014	
3015	229 char	IBM iSeries/pSeries virtual console
3016			  0 = /dev/hvc0			First console port
3017			  1 = /dev/hvc1			Second console port
3018			    ...
3019	
3020	230 char	IBM iSeries virtual tape
3021			  0 = /dev/iseries/vt0		First virtual tape, mode 0
3022			  1 = /dev/iseries/vt1		Second virtual tape, mode 0
3023			    ...
3024			 32 = /dev/iseries/vt0l		First virtual tape, mode 1
3025			 33 = /dev/iseries/vt1l		Second virtual tape, mode 1
3026			    ...
3027			 64 = /dev/iseries/vt0m		First virtual tape, mode 2
3028			 65 = /dev/iseries/vt1m		Second virtual tape, mode 2
3029			    ...
3030			 96 = /dev/iseries/vt0a		First virtual tape, mode 3
3031			 97 = /dev/iseries/vt1a		Second virtual tape, mode 3
3032			      ...
3033			128 = /dev/iseries/nvt0		First virtual tape, mode 0, no rewind
3034			129 = /dev/iseries/nvt1		Second virtual tape, mode 0, no rewind
3035			    ...
3036			160 = /dev/iseries/nvt0l	First virtual tape, mode 1, no rewind
3037			161 = /dev/iseries/nvt1l	Second virtual tape, mode 1, no rewind
3038			    ...
3039			192 = /dev/iseries/nvt0m	First virtual tape, mode 2, no rewind
3040			193 = /dev/iseries/nvt1m	Second virtual tape, mode 2, no rewind
3041			    ...
3042			224 = /dev/iseries/nvt0a	First virtual tape, mode 3, no rewind
3043			225 = /dev/iseries/nvt1a	Second virtual tape, mode 3, no rewind
3044			    ...
3045	
3046			"No rewind" refers to the omission of the default
3047			automatic rewind on device close.  The MTREW or MTOFFL
3048			ioctl()'s can be used to rewind the tape regardless of
3049			the device used to access it.
3050	
3051	231 char	InfiniBand
3052			0 = /dev/infiniband/umad0
3053			1 = /dev/infiniband/umad1
3054			  ...
3055			63 = /dev/infiniband/umad63    63rd InfiniBandMad device
3056			64 = /dev/infiniband/issm0     First InfiniBand IsSM device
3057			65 = /dev/infiniband/issm1     Second InfiniBand IsSM device
3058			  ...
3059			127 = /dev/infiniband/issm63    63rd InfiniBand IsSM device
3060			128 = /dev/infiniband/uverbs0   First InfiniBand verbs device
3061			129 = /dev/infiniband/uverbs1   Second InfiniBand verbs device
3062			  ...
3063			159 = /dev/infiniband/uverbs31  31st InfiniBand verbs device
3064	
3065	232 char	Biometric Devices
3066			0 = /dev/biometric/sensor0/fingerprint	first fingerprint sensor on first device
3067			1 = /dev/biometric/sensor0/iris		first iris sensor on first device
3068			2 = /dev/biometric/sensor0/retina	first retina sensor on first device
3069			3 = /dev/biometric/sensor0/voiceprint	first voiceprint sensor on first device
3070			4 = /dev/biometric/sensor0/facial	first facial sensor on first device
3071			5 = /dev/biometric/sensor0/hand		first hand sensor on first device
3072			  ...
3073			10 = /dev/biometric/sensor1/fingerprint	first fingerprint sensor on second device
3074			  ...
3075			20 = /dev/biometric/sensor2/fingerprint	first fingerprint sensor on third device
3076			  ...
3077	
3078	233 char	PathScale InfiniPath interconnect
3079			0 = /dev/ipath        Primary device for programs (any unit)
3080			1 = /dev/ipath0       Access specifically to unit 0
3081			2 = /dev/ipath1       Access specifically to unit 1
3082			  ...
3083			4 = /dev/ipath3       Access specifically to unit 3
3084			129 = /dev/ipath_sma    Device used by Subnet Management Agent
3085			130 = /dev/ipath_diag   Device used by diagnostics programs
3086	
3087	234-239		UNASSIGNED
3088	
3089	240-254 char	LOCAL/EXPERIMENTAL USE
3090	
3091	240-254 block	LOCAL/EXPERIMENTAL USE
3092			Allocated for local/experimental use.  For devices not
3093			assigned official numbers, these ranges should be
3094			used in order to avoid conflicting with future assignments.
3095	
3096	255 char	RESERVED
3097	
3098	255 block	RESERVED
3099	
3100			This major is reserved to assist the expansion to a
3101			larger number space.  No device nodes with this major
3102			should ever be created on the filesystem.
3103			(This is probably not true anymore, but I'll leave it
3104			for now /Torben)
3105	
3106	---LARGE MAJORS!!!!!---
3107	
3108	256 char	Equinox SST multi-port serial boards
3109			   0 = /dev/ttyEQ0	First serial port on first Equinox SST board
3110			 127 = /dev/ttyEQ127	Last serial port on first Equinox SST board
3111			 128 = /dev/ttyEQ128	First serial port on second Equinox SST board
3112			  ...
3113			1027 = /dev/ttyEQ1027	Last serial port on eighth Equinox SST board
3114	
3115	256 block	Resident Flash Disk Flash Translation Layer
3116			  0 = /dev/rfda		First RFD FTL layer
3117			 16 = /dev/rfdb		Second RFD FTL layer
3118			  ...
3119			240 = /dev/rfdp		16th RFD FTL layer
3120	
3121	257 char	Phoenix Technologies Cryptographic Services Driver
3122			  0 = /dev/ptlsec	Crypto Services Driver
3123	
3124	257 block	SSFDC Flash Translation Layer filesystem
3125			  0 = /dev/ssfdca	First SSFDC layer
3126			  8 = /dev/ssfdcb	Second SSFDC layer
3127			 16 = /dev/ssfdcc	Third SSFDC layer
3128			 24 = /dev/ssfdcd	4th SSFDC layer
3129			 32 = /dev/ssfdce	5th SSFDC layer
3130			 40 = /dev/ssfdcf	6th SSFDC layer
3131			 48 = /dev/ssfdcg	7th SSFDC layer
3132			 56 = /dev/ssfdch	8th SSFDC layer
3133	
3134	258 block	ROM/Flash read-only translation layer
3135			  0 = /dev/blockrom0	First ROM card's translation layer interface
3136			  1 = /dev/blockrom1	Second ROM card's translation layer interface
3137			  ...
3138	
3139	259 block	Block Extended Major
3140			  Used dynamically to hold additional partition minor
3141			  numbers and allow large numbers of partitions per device
3142	
3143	259 char	FPGA configuration interfaces
3144			  0 = /dev/icap0	First Xilinx internal configuration
3145			  1 = /dev/icap1	Second Xilinx internal configuration
3146	
3147	260 char	OSD (Object-based-device) SCSI Device
3148			  0 = /dev/osd0		First OSD Device
3149			  1 = /dev/osd1		Second OSD Device
3150			  ...
3151			  255 = /dev/osd255	256th OSD Device
3152	
3153	 ****	ADDITIONAL /dev DIRECTORY ENTRIES
3154	
3155	This section details additional entries that should or may exist in
3156	the /dev directory.  It is preferred that symbolic links use the same
3157	form (absolute or relative) as is indicated here.  Links are
3158	classified as "hard" or "symbolic" depending on the preferred type of
3159	link; if possible, the indicated type of link should be used.
3160	
3161	
3162		Compulsory links
3163	
3164	These links should exist on all systems:
3165	
3166	/dev/fd		/proc/self/fd	symbolic	File descriptors
3167	/dev/stdin	fd/0		symbolic	stdin file descriptor
3168	/dev/stdout	fd/1		symbolic	stdout file descriptor
3169	/dev/stderr	fd/2		symbolic	stderr file descriptor
3170	/dev/nfsd	socksys		symbolic	Required by iBCS-2
3171	/dev/X0R	null		symbolic	Required by iBCS-2
3172	
3173	Note: /dev/X0R is <letter X>-<digit 0>-<letter R>.
3174	
3175		Recommended links
3176	
3177	It is recommended that these links exist on all systems:
3178	
3179	/dev/core	/proc/kcore	symbolic	Backward compatibility
3180	/dev/ramdisk	ram0		symbolic	Backward compatibility
3181	/dev/ftape	qft0		symbolic	Backward compatibility
3182	/dev/bttv0	video0		symbolic	Backward compatibility
3183	/dev/radio	radio0		symbolic	Backward compatibility
3184	/dev/i2o*	/dev/i2o/*	symbolic	Backward compatibility
3185	/dev/scd?	sr?		hard		Alternate SCSI CD-ROM name
3186	
3187		Locally defined links
3188	
3189	The following links may be established locally to conform to the
3190	configuration of the system.  This is merely a tabulation of existing
3191	practice, and does not constitute a recommendation.  However, if they
3192	exist, they should have the following uses.
3193	
3194	/dev/mouse	mouse port	symbolic	Current mouse device
3195	/dev/tape	tape device	symbolic	Current tape device
3196	/dev/cdrom	CD-ROM device	symbolic	Current CD-ROM device
3197	/dev/cdwriter	CD-writer	symbolic	Current CD-writer device
3198	/dev/scanner	scanner		symbolic	Current scanner device
3199	/dev/modem	modem port	symbolic	Current dialout device
3200	/dev/root	root device	symbolic	Current root filesystem
3201	/dev/swap	swap device	symbolic	Current swap device
3202	
3203	/dev/modem should not be used for a modem which supports dialin as
3204	well as dialout, as it tends to cause lock file problems.  If it
3205	exists, /dev/modem should point to the appropriate primary TTY device
3206	(the use of the alternate callout devices is deprecated).
3207	
3208	For SCSI devices, /dev/tape and /dev/cdrom should point to the
3209	``cooked'' devices (/dev/st* and /dev/sr*, respectively), whereas
3210	/dev/cdwriter and /dev/scanner should point to the appropriate generic
3211	SCSI devices (/dev/sg*).
3212	
3213	/dev/mouse may point to a primary serial TTY device, a hardware mouse
3214	device, or a socket for a mouse driver program (e.g. /dev/gpmdata).
3215	
3216		Sockets and pipes
3217	
3218	Non-transient sockets and named pipes may exist in /dev.  Common entries are:
3219	
3220	/dev/printer	socket		lpd local socket
3221	/dev/log	socket		syslog local socket
3222	/dev/gpmdata	socket		gpm mouse multiplexer
3223	
3224		Mount points
3225	
3226	The following names are reserved for mounting special filesystems
3227	under /dev.  These special filesystems provide kernel interfaces that
3228	cannot be provided with standard device nodes.
3229	
3230	/dev/pts	devpts		PTY slave filesystem
3231	/dev/shm	tmpfs		POSIX shared memory maintenance access
3232	
3233	 ****	TERMINAL DEVICES
3234	
3235	Terminal, or TTY devices are a special class of character devices.  A
3236	terminal device is any device that could act as a controlling terminal
3237	for a session; this includes virtual consoles, serial ports, and
3238	pseudoterminals (PTYs).
3239	
3240	All terminal devices share a common set of capabilities known as line
3241	disciplines; these include the common terminal line discipline as well
3242	as SLIP and PPP modes.
3243	
3244	All terminal devices are named similarly; this section explains the
3245	naming and use of the various types of TTYs.  Note that the naming
3246	conventions include several historical warts; some of these are
3247	Linux-specific, some were inherited from other systems, and some
3248	reflect Linux outgrowing a borrowed convention.
3249	
3250	A hash mark (#) in a device name is used here to indicate a decimal
3251	number without leading zeroes.
3252	
3253		Virtual consoles and the console device
3254	
3255	Virtual consoles are full-screen terminal displays on the system video
3256	monitor.  Virtual consoles are named /dev/tty#, with numbering
3257	starting at /dev/tty1; /dev/tty0 is the current virtual console.
3258	/dev/tty0 is the device that should be used to access the system video
3259	card on those architectures for which the frame buffer devices
3260	(/dev/fb*) are not applicable.	Do not use /dev/console
3261	for this purpose.
3262	
3263	The console device, /dev/console, is the device to which system
3264	messages should be sent, and on which logins should be permitted in
3265	single-user mode.  Starting with Linux 2.1.71, /dev/console is managed
3266	by the kernel; for previous versions it should be a symbolic link to
3267	either /dev/tty0, a specific virtual console such as /dev/tty1, or to
3268	a serial port primary (tty*, not cu*) device, depending on the
3269	configuration of the system.
3270	
3271		Serial ports
3272	
3273	Serial ports are RS-232 serial ports and any device which simulates
3274	one, either in hardware (such as internal modems) or in software (such
3275	as the ISDN driver.)  Under Linux, each serial ports has two device
3276	names, the primary or callin device and the alternate or callout one.
3277	Each kind of device is indicated by a different letter.	 For any
3278	letter X, the names of the devices are /dev/ttyX# and /dev/cux#,
3279	respectively; for historical reasons, /dev/ttyS# and /dev/ttyC#
3280	correspond to /dev/cua# and /dev/cub#.	In the future, it should be
3281	expected that multiple letters will be used; all letters will be upper
3282	case for the "tty" device (e.g. /dev/ttyDP#) and lower case for the
3283	"cu" device (e.g. /dev/cudp#).
3284	
3285	The names /dev/ttyQ# and /dev/cuq# are reserved for local use.
3286	
3287	The alternate devices provide for kernel-based exclusion and somewhat
3288	different defaults than the primary devices.  Their main purpose is to
3289	allow the use of serial ports with programs with no inherent or broken
3290	support for serial ports.  Their use is deprecated, and they may be
3291	removed from a future version of Linux.
3292	
3293	Arbitration of serial ports is provided by the use of lock files with
3294	the names /var/lock/LCK..ttyX#.	 The contents of the lock file should
3295	be the PID of the locking process as an ASCII number.
3296	
3297	It is common practice to install links such as /dev/modem
3298	which point to serial ports.  In order to ensure proper locking in the
3299	presence of these links, it is recommended that software chase
3300	symlinks and lock all possible names; additionally, it is recommended
3301	that a lock file be installed with the corresponding alternate
3302	device.	 In order to avoid deadlocks, it is recommended that the locks
3303	are acquired in the following order, and released in the reverse:
3304	
3305		1. The symbolic link name, if any (/var/lock/LCK..modem)
3306		2. The "tty" name (/var/lock/LCK..ttyS2)
3307		3. The alternate device name (/var/lock/LCK..cua2)
3308	
3309	In the case of nested symbolic links, the lock files should be
3310	installed in the order the symlinks are resolved.
3311	
3312	Under no circumstances should an application hold a lock while waiting
3313	for another to be released.  In addition, applications which attempt
3314	to create lock files for the corresponding alternate device names
3315	should take into account the possibility of being used on a non-serial
3316	port TTY, for which no alternate device would exist.
3317	
3318		Pseudoterminals (PTYs)
3319	
3320	Pseudoterminals, or PTYs, are used to create login sessions or provide
3321	other capabilities requiring a TTY line discipline (including SLIP or
3322	PPP capability) to arbitrary data-generation processes.	 Each PTY has
3323	a master side, named /dev/pty[p-za-e][0-9a-f], and a slave side, named
3324	/dev/tty[p-za-e][0-9a-f].  The kernel arbitrates the use of PTYs by
3325	allowing each master side to be opened only once.
3326	
3327	Once the master side has been opened, the corresponding slave device
3328	can be used in the same manner as any TTY device.  The master and
3329	slave devices are connected by the kernel, generating the equivalent
3330	of a bidirectional pipe with TTY capabilities.
3331	
3332	Recent versions of the Linux kernels and GNU libc contain support for
3333	the System V/Unix98 naming scheme for PTYs, which assigns a common
3334	device, /dev/ptmx, to all the masters (opening it will automatically
3335	give you a previously unassigned PTY) and a subdirectory, /dev/pts,
3336	for the slaves; the slaves are named with decimal integers (/dev/pts/#
3337	in our notation).  This removes the problem of exhausting the
3338	namespace and enables the kernel to automatically create the device
3339	nodes for the slaves on demand using the "devpts" filesystem.
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