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audio: added SSG-EG to YM2612, plus some timing changes for SN76496+YM2612

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This commit is contained in:
kub 2020-01-08 00:49:13 +01:00
parent 2a942f0d41
commit 8ac9ab7fcb
13 changed files with 571 additions and 455 deletions
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6
pico/memory.c
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@ -546,7 +546,7 @@ static void PicoWrite8_z80(u32 a, u32 d)
}
if ((a & 0x6000) == 0x4000) { // FM Sound
if (PicoIn.opt & POPT_EN_FM)
Pico.m.status |= ym2612_write_local(a & 3, d & 0xff, 0) & 1;
ym2612_write_local(a & 3, d & 0xff, 0);
return;
}
// TODO: probably other VDP access too? Maybe more mirrors?
@ -1059,6 +1059,8 @@ static int ym2612_write_local(u32 a, u32 d, int is_from_z80)
break;
}
int scanline = get_scanline(is_from_z80);
PsndDoFM(scanline);
#ifdef __GP2X__
if (PicoIn.opt & POPT_EXT_FM)
return YM2612Write_940(a, d, get_scanline(is_from_z80));
@ -1224,7 +1226,7 @@ static unsigned char z80_md_bank_read(unsigned short a)
static void z80_md_ym2612_write(unsigned int a, unsigned char data)
{
if (PicoIn.opt & POPT_EN_FM)
Pico.m.status |= ym2612_write_local(a, data, 1) & 1;
ym2612_write_local(a, data, 1);
}
static void z80_md_vdp_br_write(unsigned int a, unsigned char data)