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correct thumb multiply timings

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Jaklyy 2024-11-05 21:56:19 -05:00
parent 5f003eb967
commit 3c7db9b21f
1 changed files with 4 additions and 4 deletions
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8
src/ARMInterpreter_ALU.cpp
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@ -1583,10 +1583,10 @@ void T_MUL_REG(ARM* cpu)
else else
{ {
cpu->SetC(0); // carry flag destroyed, they say. whatever that means... cpu->SetC(0); // carry flag destroyed, they say. whatever that means...
if (a & 0xFF000000) cycles += 4; if ((a & 0xFFFFFF00) == 0x00000000 || (a & 0xFFFFFF00) == 0xFFFFFF00) cycles = 1;
else if (a & 0x00FF0000) cycles += 3; else if ((a & 0xFFFF0000) == 0x00000000 || (a & 0xFFFF0000) == 0xFFFF0000) cycles = 2;
else if (a & 0x0000FF00) cycles += 2; else if ((a & 0xFF000000) == 0x00000000 || (a & 0xFF000000) == 0xFF000000) cycles = 3;
else cycles += 1; else cycles = 4;
} }
cpu->AddCycles_CI(cycles); cpu->AddCycles_CI(cycles);
} }