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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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8
pico/sms.c
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@ -108,6 +108,7 @@ static unsigned char z80_sms_in(unsigned short a)
elprintf(EL_IO, "z80 port %04x read", a); elprintf(EL_IO, "z80 port %04x read", a);
if((a&0xff)>= 0xf0){ if((a&0xff)>= 0xf0){
if (PicoIn.opt & POPT_EN_YM2413){
switch((a&0xff)) switch((a&0xff))
{ {
case 0xf0: case 0xf0:
@ -118,13 +119,12 @@ static unsigned char z80_sms_in(unsigned short a)
break; break;
case 0xf2: case 0xf2:
// bit 0 = 1 active FM Pac // bit 0 = 1 active FM Pac
if (PicoIn.opt & POPT_EN_YM2413){
d = ymflag; d = ymflag;
//printf("read FM Check = %02x\n", d); //printf("read FM Check = %02x\n", d);
}
break; break;
} }
} }
}
else{ else{
a &= 0xc1; a &= 0xc1;
switch (a) switch (a)
@ -171,6 +171,7 @@ static void z80_sms_out(unsigned short a, unsigned char d)
elprintf(EL_IO, "z80 port %04x write %02x", a, d); elprintf(EL_IO, "z80 port %04x write %02x", a, d);
if((a&0xff)>= 0xf0){ if((a&0xff)>= 0xf0){
if (PicoIn.opt & POPT_EN_YM2413){
switch((a&0xff)) switch((a&0xff))
{ {
case 0xf0: case 0xf0:
@ -185,13 +186,12 @@ static void z80_sms_out(unsigned short a, unsigned char d)
break; break;
case 0xf2: case 0xf2:
// bit 0 = 1 active FM Pac // bit 0 = 1 active FM Pac
if (PicoIn.opt & POPT_EN_YM2413){
ymflag = d; ymflag = d;
//printf("write FM Check = %02x\n", d); //printf("write FM Check = %02x\n", d);
}
break; break;
} }
} }
}
else{ else{
a &= 0xc1; a &= 0xc1;
switch (a) switch (a)