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Based on kernel version 3.13. Page generated on 2014-01-20 22:04 EST.

1		How to try to survive an IBM Mwave under Linux SB drivers
2	
3	
4	+	IBM have now released documentation of sorts and Torsten is busy
5		trying to make the Mwave work. This is not however a trivial task.
6	
7	----------------------------------------------------------------------------
8	
9	OK, first thing - the IRQ problem IS a problem, whether the test is bypassed or
10	not.  It is NOT a Linux problem, but an MWAVE problem that is fixed with the
11	latest MWAVE patches. So, in other words, don't bypass the test for MWAVES!
12	
13	I have Windows 95 on /dev/hda1, swap on /dev/hda2, and Red Hat 5 on /dev/hda3.
14	
15	The steps, then:
16	
17	    Boot to Linux. 
18	    Mount Windows 95 file system (assume mount point = /dos95).
19	    mkdir /dos95/linux
20	    mkdir /dos95/linux/boot
21	    mkdir /dos95/linux/boot/parms
22	
23	    Copy the kernel, any initrd image, and loadlin to /dos95/linux/boot/.
24	
25	    Reboot to Windows 95.
26	
27	    Edit C:/msdos.sys and add or change the following:
28	
29	        Logo=0
30	        BootGUI=0
31	
32	    Note that msdos.sys is a text file but it needs to be made 'unhidden',
33	    readable and writable before it can be edited.  This can be done with
34	    DOS' "attrib" command.
35	
36	    Edit config.sys to have multiple config menus. I have one for windows 95 and
37	    five for Linux, like this:
38	------------
39	[menu]
40	menuitem=W95, Windows 95
41	menuitem=LINTP, Linux - ThinkPad
42	menuitem=LINTP3, Linux - ThinkPad Console
43	menuitem=LINDOC, Linux - Docked
44	menuitem=LINDOC3, Linux - Docked Console
45	menuitem=LIN1, Linux - Single User Mode
46	REM menudefault=W95,10
47	
48	[W95]
49	
50	[LINTP]
51	
52	[LINDOC]
53	
54	[LINTP3]
55	
56	[LINDOC3]
57	
58	[LIN1]
59	
60	[COMMON]
61	FILES=30
62	REM Please read README.TXT in C:\MWW subdirectory before changing the DOS= statement.
63	DOS=HIGH,UMB
64	DEVICE=C:\MWW\MANAGER\MWD50430.EXE
65	SHELL=c:\command.com /e:2048
66	-------------------
67	
68	The important things are the SHELL and DEVICE statements.
69	
70	    Then change autoexec.bat. Basically everything in there originally should be
71	    done ONLY when Windows 95 is booted. Then you add new things specifically
72	    for Linux.  Mine is as follows
73	
74	---------------
75	@ECHO OFF
76	if "%CONFIG%" == "W95" goto W95
77	
78	REM
79	REM Linux stuff
80	REM
81	SET MWPATH=C:\MWW\DLL;C:\MWW\MWGAMES;C:\MWW\DSP
82	SET BLASTER=A220 I5 D1
83	SET MWROOT=C:\MWW
84	SET LIBPATH=C:\MWW\DLL
85	SET PATH=C:\WINDOWS;C:\MWW\DLL;
86	CALL MWAVE START NOSHOW
87	c:\linux\boot\loadlin.exe @c:\linux\boot\parms\%CONFIG%.par
88	
89	:W95
90	REM
91	REM Windows 95 stuff
92	REM
93	c:\toolkit\guard
94	SET MSINPUT=C:\MSINPUT
95	SET MWPATH=C:\MWW\DLL;C:\MWW\MWGAMES;C:\MWW\DSP
96	REM The following is used by DOS games to recognize Sound Blaster hardware.
97	REM If hardware settings are changed, please change this line as well.
98	REM See the Mwave README file for instructions.
99	SET BLASTER=A220 I5 D1
100	SET MWROOT=C:\MWW
101	SET LIBPATH=C:\MWW\DLL
102	SET PATH=C:\WINDOWS;C:\WINDOWS\COMMAND;E:\ORAWIN95\BIN;f:\msdev\bin;e:\v30\bin.dbg;v:\devt\v30\bin;c:\JavaSDK\Bin;C:\MWW\DLL;
103	SET INCLUDE=f:\MSDEV\INCLUDE;F:\MSDEV\MFC\INCLUDE
104	SET LIB=F:\MSDEV\LIB;F:\MSDEV\MFC\LIB
105	win
106	
107	------------------------
108	
109	Now build a file in c:\linux\boot\parms for each Linux config that you have.
110	
111	For example, my LINDOC3 config is for a docked Thinkpad at runlevel 3 with no
112	initrd image, and has a parameter file named LINDOC3.PAR in c:\linux\boot\parms:
113	
114	-----------------------
115	#   LOADLIN @param_file image=other_image root=/dev/other
116	#
117	#	Linux Console in docking station
118	#
119	c:\linux\boot\zImage.krn        # First value must be filename of Linux kernel.
120	root=/dev/hda3                  # device which gets mounted as root FS
121	ro                              # Other kernel arguments go here.
122	apm=off
123	doc=yes
124	3
125	-----------------------
126	
127	The doc=yes parameter is an environment variable used by my init scripts, not
128	a kernel argument.
129	
130	However, the apm=off parameter IS a kernel argument!  APM, at least in my setup,
131	causes the kernel to crash when loaded via loadlin (but NOT when loaded via
132	LILO). The APM stuff COULD be forced out of the kernel via the kernel compile
133	options. Instead, I got an unofficial patch to the APM drivers that allows them
134	to be dynamically deactivated via kernel arguments. Whatever you chose to
135	document, APM, it seems, MUST be off for setups like mine.
136	
137	Now make sure C:\MWW\MWCONFIG.REF looks like this:
138	
139	----------------------
140	[NativeDOS]
141	Default=SB1.5
142	SBInputSource=CD
143	SYNTH=FM
144	QSound=OFF
145	Reverb=OFF
146	Chorus=OFF
147	ReverbDepth=5
148	ChorusDepth=5
149	SBInputVolume=5
150	SBMainVolume=10
151	SBWaveVolume=10
152	SBSynthVolume=10
153	WaveTableVolume=10
154	AudioPowerDriver=ON
155	
156	[FastCFG]
157	Show=No
158	HideOption=Off
159	-----------------------------
160	
161	OR the Default= line COULD be
162	
163	Default=SBPRO
164	
165	Reboot to Windows 95 and choose Linux. When booted, use sndconfig to configure
166	the sound modules and voilà - ThinkPad sound with Linux.
167	
168	Now the gotchas - you can either have CD sound OR Mixers but not both. That's a
169	problem with the SB1.5 (CD sound) or SBPRO (Mixers) settings. No one knows why
170	this is!
171	
172	For some reason MPEG3 files, when played through mpg123, sound like they
173	are playing at 1/8th speed - not very useful!  If you have ANY insight
174	on why this second thing might be happening, I would be grateful.
175	
176	===========================================================
177	    _/      _/_/_/_/
178	   _/_/  _/_/     _/
179	  _/ _/_/ _/_/_/_/      Martin John Bartlett
180	 _/  _/  _/     _/      (martin@nitram.demon.co.uk)
181	_/      _/_/_/_/
182	       _/
183	_/    _/
184	 _/_/
185	===========================================================
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