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    SubjectRe: [PATCHSET 22/25] add support for PC-9800 architecture (sound alsa)
    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

    Thanks,
    Osamu
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