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The INS and OUTS instruction on V20/V30 now increase/decrease the correct registers, fixes #3723.

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Miran Grča
2023-10-11 18:33:01 +02:00
committed by GitHub
parent 5a75ce9bf2
commit 528c269cdd
1 changed files with 4 additions and 4 deletions
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8
src/cpu/808x.c
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@@ -1960,18 +1960,18 @@ stos(int bits)
static void static void
ins(int bits) ins(int bits)
{ {
cpu_state.eaaddr = SI; cpu_state.eaaddr = DI;
cpu_io(bits, 0, cpu_state.eaaddr); cpu_io(bits, 0, cpu_state.eaaddr);
SI = string_increment(bits); DI = string_increment(bits);
} }
static void static void
outs(int bits) outs(int bits)
{ {
cpu_state.eaaddr = DI; cpu_state.eaaddr = SI;
cpu_data = (bits == 16) ? AX : AL; cpu_data = (bits == 16) ? AX : AL;
cpu_io(bits, 1, cpu_state.eaaddr); cpu_io(bits, 1, cpu_state.eaaddr);
DI = string_increment(bits); SI = string_increment(bits);
} }
static void static void