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proper ym2612 save hopefully done

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@491 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2008-06-22 22:34:14 +00:00
parent 5ed2561c91
commit db49317be1
3 changed files with 171 additions and 16 deletions
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21
Pico/Memory.c
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@ -937,11 +937,23 @@ void ym2612_unpack_state(void)
YM2612PicoStateLoad();
// feed all the registers and update internal state
for (i = 0x20; i < 0xB8; i++) {
for (i = 0x20; i < 0xA0; i++) {
ym2612_write_local(0, i, 0);
ym2612_write_local(1, ym2612.REGS[i], 0);
}
for (i = 0x30; i < 0xB8; i++) {
for (i = 0x30; i < 0xA0; i++) {
ym2612_write_local(2, i, 0);
ym2612_write_local(3, ym2612.REGS[i|0x100], 0);
}
for (i = 0xAF; i >= 0xA0; i--) { // must apply backwards
ym2612_write_local(2, i, 0);
ym2612_write_local(3, ym2612.REGS[i|0x100], 0);
ym2612_write_local(0, i, 0);
ym2612_write_local(1, ym2612.REGS[i], 0);
}
for (i = 0xB0; i < 0xB8; i++) {
ym2612_write_local(0, i, 0);
ym2612_write_local(1, ym2612.REGS[i], 0);
ym2612_write_local(2, i, 0);
ym2612_write_local(3, ym2612.REGS[i|0x100], 0);
}
@ -952,7 +964,10 @@ void ym2612_unpack_state(void)
else
#endif
ret = YM2612PicoStateLoad2(&tat, &tbt);
if (ret != 0) return; // no saved timers
if (ret != 0) {
elprintf(EL_STATUS, "old ym2612 state");
return; // no saved timers
}
tac = (1024 - ym2612.OPN.ST.TA) << 16;
tbc = (256 - ym2612.OPN.ST.TB) << 16;