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sound, increase resolution for calculating psg sound

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This commit is contained in:
kub 2021-10-02 09:32:57 +02:00
parent eb3b1f9d72
commit 86d6fb9a2f
3 changed files with 27 additions and 22 deletions
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7
pico/memory.c
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@ -394,13 +394,11 @@ void NOINLINE ctl_write_z80reset(u32 d)
}
}
static int get_scanline(int is_from_z80);
static void psg_write_68k(u32 d)
{
// look for volume write and update if needed
if ((d & 0x90) == 0x90)
PsndDoPSG(Pico.m.scanline);
PsndDoPSG(z80_cycles_from_68k());
SN76496Write(d);
}
@ -408,8 +406,7 @@ static void psg_write_68k(u32 d)
static void psg_write_z80(u32 d)
{
if ((d & 0x90) == 0x90) {
int scanline = get_scanline(1);
PsndDoPSG(scanline);
PsndDoPSG(z80_cyclesDone());
}
SN76496Write(d);