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audio, improve YM2413 handling

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This commit is contained in:
kub 2020-09-25 21:22:40 +02:00
parent 47548249a0
commit 81d54be15d
1 changed files with 29 additions and 29 deletions
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58
pico/sms.c
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@ -108,21 +108,21 @@ static unsigned char z80_sms_in(unsigned short a)
elprintf(EL_IO, "z80 port %04x read", a);
if((a&0xff)>= 0xf0){
switch((a&0xff))
{
case 0xf0:
// FM reg port
break;
case 0xf1:
// FM data port
break;
case 0xf2:
// bit 0 = 1 active FM Pac
if (PicoIn.opt & POPT_EN_YM2413){
if (PicoIn.opt & POPT_EN_YM2413){
switch((a&0xff))
{
case 0xf0:
// FM reg port
break;
case 0xf1:
// FM data port
break;
case 0xf2:
// bit 0 = 1 active FM Pac
d = ymflag;
//printf("read FM Check = %02x\n", d);
break;
}
break;
}
}
else{
@ -171,25 +171,25 @@ static void z80_sms_out(unsigned short a, unsigned char d)
elprintf(EL_IO, "z80 port %04x write %02x", a, d);
if((a&0xff)>= 0xf0){
switch((a&0xff))
{
case 0xf0:
// FM reg port
YM2413_regWrite(d);
//printf("write FM register = %02x\n", d);
break;
case 0xf1:
// FM data port
YM2413_dataWrite(d);
//printf("write FM data = %02x\n", d);
break;
case 0xf2:
// bit 0 = 1 active FM Pac
if (PicoIn.opt & POPT_EN_YM2413){
if (PicoIn.opt & POPT_EN_YM2413){
switch((a&0xff))
{
case 0xf0:
// FM reg port
YM2413_regWrite(d);
//printf("write FM register = %02x\n", d);
break;
case 0xf1:
// FM data port
YM2413_dataWrite(d);
//printf("write FM data = %02x\n", d);
break;
case 0xf2:
// bit 0 = 1 active FM Pac
ymflag = d;
//printf("write FM Check = %02x\n", d);
}
break;
break;
}
}
}
else{