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Fix NEC Vx0 INS*/OUS* timings calculation.

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This commit is contained in:
OBattler
2025-01-13 04:35:23 +01:00
parent f039fce497
commit 123ff3b5e7
1 changed files with 39 additions and 14 deletions
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53
src/cpu/808x.c
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@@ -1634,28 +1634,55 @@ cpu_data_opff_rm(void)
}
}
uint8_t
cpu_inb(uint16_t port)
{
uint8_t ret;
wait(4, 0);
old_cycles = cycles;
ret = inb(port);
resub_cycles();
}
uint16_t
cpu_inw(uint16_t port)
{
if (is8086 && !(port & 1)) {
wait(4, 0);
} else {
wait(8, 0);
}
uint16_t ret;
return inw(port);
if (is8086 && !(port & 1))
wait(4, 0);
else
wait(8, 0);
ret = inw(port);
resub_cycles();
}
void
cpu_outb(uint16_t port, uint16_t val)
{
wait(4, 0);
outb(port, val);
resub_cycles();
}
void
cpu_outw(uint16_t port, uint16_t val)
{
if (is8086 && !(port & 1)) {
if (is8086 && !(port & 1))
wait(4, 0);
} else {
else
wait(8, 0);
}
return outw(port, val);
outw(port, val);
resub_cycles();
}
/* Executes instructions up to the specified number of cycles. */
@@ -1804,8 +1831,7 @@ execx86(int cycs)
writememw(es, DI, cpu_inw(DX));
DI += (cpu_state.flags & D_FLAG) ? -2 : 2;
} else {
wait(4, 0);
writememb(es, DI, inb(DX));
writememb(es, DI, cpu_inb(DX));
DI += (cpu_state.flags & D_FLAG) ? -1 : 1;
}
@@ -1833,8 +1859,7 @@ execx86(int cycs)
cpu_outw(DX, readmemw(dest_seg, SI));
SI += (cpu_state.flags & D_FLAG) ? -2 : 2;
} else {
wait(4, 0);
outb(DX, readmemb(dest_seg + SI));
cpu_outb(DX, readmemb(dest_seg + SI));
SI += (cpu_state.flags & D_FLAG) ? -1 : 1;
}
if (in_rep == 0)