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Corrects write-back and zero flag for ADD/SUB.l.

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This commit is contained in:
Thomas Harte 2019-04-12 16:41:00 -04:00
parent 2ba66c4457
commit f48db625a0
1 changed files with 2 additions and 2 deletions
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4
Processors/68000/Implementation/68000Implementation.hpp
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@ -136,7 +136,7 @@ template <class T, bool dtack_is_implicit> void Processor<T, dtack_is_implicit>:
const uint32_t destination = active_program_->destination->full;
const uint64_t result = destination + source;
zero_result_ = active_program_->destination->halves.low.full = uint32_t(result);
zero_result_ = active_program_->destination->full = uint32_t(result);
extend_flag_ = carry_flag_ = result >> 32;
negative_flag_ = result & 0x80000000;
overflow_flag_ = add_overflow() & 0x80000000;
@ -506,7 +506,7 @@ template <class T, bool dtack_is_implicit> void Processor<T, dtack_is_implicit>:
const uint32_t destination = active_program_->destination->full;
const uint64_t result = destination - source;
zero_result_ = active_program_->destination->halves.low.full = uint32_t(result);
zero_result_ = active_program_->destination->full = uint32_t(result);
extend_flag_ = carry_flag_ = result >> 32;
negative_flag_ = result & 0x80000000;
overflow_flag_ = sub_overflow() & 0x80000000;