Based on kernel version 3.12. Page generated on 2013-11-13 22:00 EST.
1 ALS-007/ALS-100/ALS-200 based sound cards 2 ========================================= 3 4 Support for sound cards based around the Avance Logic 5 ALS-007/ALS-100/ALS-200 chip is included. These chips are a single 6 chip PnP sound solution which is mostly hardware compatible with the 7 Sound Blaster 16 card, with most differences occurring in the use of 8 the mixer registers. For this reason the ALS code is integrated 9 as part of the Sound Blaster 16 driver (adding only 800 bytes to the 10 SB16 driver). 11 12 To use an ALS sound card under Linux, enable the following options as 13 modules in the sound configuration section of the kernel config: 14 - 100% Sound Blaster compatibles (SB16/32/64, ESS, Jazz16) support 15 - FM synthesizer (YM3812/OPL-3) support 16 - standalone MPU401 support may be required for some cards; for the 17 ALS-007, when using isapnptools, it is required 18 Since the ALS-007/100/200 are PnP cards, ISAPnP support should probably be 19 compiled in. If kernel level PnP support is not included, isapnptools will 20 be required to configure the card before the sound modules are loaded. 21 22 When using kernel level ISAPnP, the kernel should correctly identify and 23 configure all resources required by the card when the "sb" module is 24 inserted. Note that the ALS-007 does not have a 16 bit DMA channel and that 25 the MPU401 interface on this card uses a different interrupt to the audio 26 section. This should all be correctly configured by the kernel; if problems 27 with the MPU401 interface surface, try using the standalone MPU401 module, 28 passing "0" as the "sb" module's "mpu_io" module parameter to prevent the 29 soundblaster driver attempting to register the MPU401 itself. The onboard 30 synth device can be accessed using the "opl3" module. 31 32 If isapnptools is used to wake up the sound card (as in 2.2.x), the settings 33 of the card's resources should be passed to the kernel modules ("sb", "opl3" 34 and "mpu401") using the module parameters. When configuring an ALS-007, be 35 sure to specify different IRQs for the audio and MPU401 sections - this card 36 requires they be different. For "sb", "io", "irq" and "dma" should be set 37 to the same values used to configure the audio section of the card with 38 isapnp. "dma16" should be explicitly set to "-1" for an ALS-007 since this 39 card does not have a 16 bit dma channel; if not specified the kernel will 40 default to using channel 5 anyway which will cause audio not to work. 41 "mpu_io" should be set to 0. The "io" parameter of the "opl3" module should 42 also agree with the setting used by isapnp. To get the MPU401 interface 43 working on an ALS-007 card, the "mpu401" module will be required since this 44 card uses separate IRQs for the audio and MPU401 sections and there is no 45 parameter available to pass a different IRQ to the "sb" driver (whose 46 inbuilt MPU401 driver would otherwise be fine). Insert the mpu401 module 47 passing appropriate values using the "io" and "irq" parameters. 48 49 The resulting sound driver will provide the following capabilities: 50 - 8 and 16 bit audio playback 51 - 8 and 16 bit audio recording 52 - Software selection of record source (line in, CD, FM, mic, master) 53 - Record and playback of midi data via the external MPU-401 54 - Playback of midi data using inbuilt FM synthesizer 55 - Control of the ALS-007 mixer via any OSS-compatible mixer programs. 56 Controls available are Master (L&R), Line in (L&R), CD (L&R), 57 DSP/PCM/audio out (L&R), FM (L&R) and Mic in (mono). 58 59 Jonathan Woithe 60 email@example.com 61 30 March 1998 62 63 Modified 2000-02-26 by Dave Forrest, firstname.lastname@example.org to add ALS100/ALS200 64 Modified 2000-04-10 by Paul Laufer, email@example.com to add ISAPnP info. 65 Modified 2000-11-19 by Jonathan Woithe, firstname.lastname@example.org 66 - updated information for kernel 2.4.x.