Rev 5057 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 874 | serge | 1 | Nable 21.05.2008. |
| 2 | This driver is my contribution (or donation) to KolibriOS. This is provided |
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| 3 | AS IS in hope it'll be useful, but WITHOUT ANY WARRANTY! No responcibility |
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| 4 | for any hardware damage or data loss. Use at your own risk! |
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| 5 | |||
| 6 | ;------------------------------------------------------------------------------- |
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| 7 | ;Changelog: |
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| 8 | ;------------------------------------------------------------------------------- |
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| 9 | v0.2 - DEV_SET(GET)_MASTERVOL functions are unlocked and implemented. |
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| 10 | |||
| 11 | v0.1 - first release. |
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| 12 | |||
| 13 | ;------------------------------------------------------------------------------- |
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| 14 | ;Tiny FAQ for sound driver by Nable for SB16 sound card. |
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| 15 | ;------------------------------------------------------------------------------- |
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| 16 | |||
| 17 | ;What is it?-------------------------------------------------------------------- |
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| 18 | As you may know there is a sound subsystem ('INFINITY') in KolibriOS. |
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| 19 | This subsystem includes mixer and separate interface for soundplayer |
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| 20 | program and driver, so player application don't need to know what soundcard |
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| 21 | is installed and how to cope with it, all work with card do the driver. |
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| 22 | Before this time there were drivers only for AC97 integrated sound, but I |
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| 23 | don't have such at home and if I would upgrade my computer with a newest |
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| 24 | hardware, with 100% probability integrated sound will be HD Codec, nowadays |
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| 25 | AC97 is not actual (2008 year is at calendar). But I'm not planning to upgrade |
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| 26 | my computer so much now (and in next 5-6 years), writing the driver for my PCI |
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| 27 | ESS Maestro1 card is difficult for me (may be some time later), so I decided |
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| 28 | to write a driver for SB16. At first it is easy, there are many working |
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| 29 | examples for DOS, there are heaps of good documentation and as an ISA device |
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| 30 | SB16 can be programmed through I/O ports (about 5 ports are used), that is |
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| 31 | more easy than PCI access. Now, enough lirics, lets go to physics :-) |
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| 32 | If you still don't understand what stuff is it, I'll tell this in brief: |
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| 33 | with this driver you can play MP3 and WAV music (using AC97SND player) and |
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| 34 | sounds (some games and DOSBOX can produce sound output through sound |
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| 35 | subsystem) in KolibriOS. |
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| 36 | |||
| 37 | ;Yeah! I need sound in Kolibri and I have SB16 card. Whats then?---------------- |
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| 38 | At first copy my SOUND.OBJ to /sys/drivers at your Kolibri system. Note, |
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| 39 | that if you have AC97 card and it's driver started - then new driver won't |
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| 40 | run until reboot. Then run BOARD and go to 'user' tab. Then try to run |
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| 41 | AC97SND player. At BOARD you will see the following (if you had a proper |
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| 42 | card): |
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| 43 | |----------------------------| |
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| 44 | |detecting hardware... | <- detector startup message |
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| 45 | |DSP found at port 220h | <- if you have a proper card, it'll be |
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| 46 | |DSP version 4.13 - SB16 | autodetected. Numbers may be different. |
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| 47 | |failed to attach IRQ5 | <- don't mention. Old kernels reserve IRQ5 |
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| 48 | |owner's handler: 0x80D74284 | see below how to fix it. |
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| 49 | |----------------------------| |
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| 50 | At first, note that DSP version must be 4.xx or higher. Older cards are not |
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| 51 | supported in this first release, maybe some time later. If nothing detected |
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| 52 | but PNP/BIOS or some other OS detects your card - I'm sorry, it's perverted |
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| 53 | PNP card like OPTi16, that is like HD Codec - until you init it through |
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| 54 | PCI->ISA bridge (HD Codec of course through PCI->PCI bridge), map it, etc, |
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| 55 | you can't use it in any way. I'd rather write a PCI device driver, than |
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| 56 | for this extreme perversion. If your card detected and has a proper version |
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| 57 | but you see 'failed to attach IRQ' - delete stroke 'mov [irq_owner+4*5],1' from the |
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| 58 | file kernel.asm of your kernel source, save it, rebuild kernel, copy new |
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| 59 | kernel to /sys/ (did you rename 'kernel' to 'kernel.mnt'? You should do it), |
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| 60 | restart kernel (Ctrl+Alt+F12, Home). THE EASIER WAY IS TO USE A NEWER KERNEL, |
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| 61 | since SVN802 it's fixed. |
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| 62 | Now everything should be OK. |
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| 63 | |||
| 64 | ;It works for a part of the second and then stops, but system doesn't hang------ |
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| 65 | Go to 'config.inc' of my driver and change 'sb_irq_num' value from 5 to 7. |
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| 66 | Then save, rebuild driver (compile 'sound.asm'), put 'sound' to /sys/drivers/ |
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| 9425 | leency | 67 | (you need to rename file 'sound' to 'sound.sys'), restart kernel and try again |
| 874 | serge | 68 | to produce sound. |
| 69 | |||
| 70 | ;------------------------------------------------------------------------------- |
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| 71 | Ask your questions at KolibriOS forum: board.kolibrios.org |
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| 72 | I'll try to answer you if possible. |