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Fix ABCD when the result has an invalid lower digit.

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Thomas Harte 2022-05-11 16:31:27 -04:00
parent 17add4b585
commit a9902fc817
1 changed files with 1 additions and 1 deletions
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InstructionSets/M68k/Implementation/PerformImplementation.hpp
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@ -43,7 +43,7 @@ template <
int result = (destination & 0xf) + (source & 0xf) + (status.extend_flag_ ? 1 : 0); int result = (destination & 0xf) + (source & 0xf) + (status.extend_flag_ ? 1 : 0);
if(result > 0x09) result += 0x06; if(result > 0x09) result += 0x06;
result += (destination & 0xf0) + (source & 0xf0); result += (destination & 0xf0) + (source & 0xf0);
if(result > 0x99) result += 0x60; if(result > 0x9f) result += 0x60;
// Set all flags essentially as if this were normal addition. // Set all flags essentially as if this were normal addition.
status.zero_result_ |= result & 0xff; status.zero_result_ |= result & 0xff;