Messages in this thread | | | Date | Sat, 02 Nov 2002 11:44:08 +0900 | From | Osamu Tomita <> | Subject | Re: [PATCHSET 22/25] add support for PC-9800 architecture (sound alsa) |
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Takashi Iwai wrote: > > At Fri, 1 Nov 2002 22:02:18 +0900, > Osamu Tomita wrote: > > Now, PCM OPL3 and MPU401 all works fine. > > Would you please add option "pc98ii" into snd-mpu401? > > This is for Box that has MPU-PC98II only, with no other sound card. > > well, then i misunderstood the hardware configuration on PC98. > > doesn't MPU-PC98II need any specific hardware init code like in > pc98_mpu401_init()? MPU-PC98II doesn't need those init codes. Apologize for not enough explanations. On-board sound and sound cards made by NEC need those init codes. Perhaps, for backward compatibility, PC-9800's BIOS masks newer features like WSS PCM, OPL3 FM synth and MPU-401 compatible IF. After cold booting, they works as oldest sound card of NEC (PC- 9801-26). So I added some init codes to enable those features. Most sound cards made by third parties (MPU-98, Sound blaster16 for PC9800...etc) don't need these init codes.
> > if yes, then we should create another module for PC98II rather than > including a magical init code into a generic mpu401 module. Init code for MPU-401 detects wheter NEC or not. If MPU-401 is not NEC's, skip magical initialization. So I think it's beter, your patch and adding option to mpu401.c
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