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ppcopcodes: Fix divu for MPC601.

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joevt
2024-12-02 00:54:57 -08:00
committed by dingusdev
parent 84075c5988
commit b8af8d387c
1 changed files with 4 additions and 1 deletions
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cpu/ppc/ppcopcodes.cpp
+4 -1
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@@ -565,7 +565,10 @@ void dppc_interpreter::ppc_divwu(uint32_t opcode) {
ppc_grab_regsdab(opcode);
if (!ppc_result_b) { // division by zero
ppc_result_d = 0;
if (is_601)
ppc_result_d = -1; // tested on 601 in Mac OS 9.1
else
ppc_result_d = 0;
if (ov)
ppc_state.spr[SPR::XER] |= XER::SO | XER::OV;