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timer adjustment for Dai Makaimura

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@469 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2008-05-28 21:22:46 +00:00
parent 453d2a6eda
commit e0cfb2fd65
2 changed files with 4 additions and 5 deletions
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6
Pico/Memory.c
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@ -799,7 +799,7 @@ int ym2612_write_local(u32 a, u32 d, int is_from_z80)
//ym2612.OPN.ST.TAC = (1024-TAnew)*18;
//ym2612.OPN.ST.TAT = 0;
//
timer_a_step = timer_a_offset = 16495 * (1024 - TAnew);
timer_a_step = timer_a_offset = 16466 * (1024 - TAnew);
if (ym2612.OPN.ST.mode & 1) {
int cycles = is_from_z80 ? z80_cyclesDone() : cycles_68k_to_z80(SekCyclesDone());
timer_a_next_oflow = (cycles << 8) + timer_a_step;
@ -815,7 +815,7 @@ int ym2612_write_local(u32 a, u32 d, int is_from_z80)
//ym2612.OPN.ST.TBC = (256-d)<<4;
//ym2612.OPN.ST.TBC *= 18;
//ym2612.OPN.ST.TBT = 0;
timer_b_step = timer_b_offset = 263912 * (256 - d);
timer_b_step = timer_b_offset = 262840 * (256 - d); // 262881
if (ym2612.OPN.ST.mode & 2) {
int cycles = is_from_z80 ? z80_cyclesDone() : cycles_68k_to_z80(SekCyclesDone());
timer_b_next_oflow = (cycles << 8) + timer_b_step;
@ -912,7 +912,7 @@ u32 ym2612_read_local_68k(void)
return ym2612.OPN.ST.status;
}
// TODO: new ym2612 savestates
// TODO: new ym2612 savestates, also save timers
void ym2612_unpack_state(void)
{
int i;