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Merge pull request #1154 from TomHarte/65816StackAgain

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Clarify SH=1 upon TCS.
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Thomas Harte 2023-08-19 15:56:30 -04:00 committed by GitHub
commit d0284917cf
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1 changed files with 3 additions and 5 deletions
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Processors/65816/Implementation/65816Implementation.hpp
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@ -622,7 +622,7 @@ template <typename BusHandler, bool uses_ready_line> void Processor<BusHandler,
// (and make reasonable guesses as to the N flag).
case TXS:
registers_.s = registers_.x.full;
registers_.s = registers_.x;
break;
case TSX:
@ -671,10 +671,8 @@ template <typename BusHandler, bool uses_ready_line> void Processor<BusHandler,
break;
case TCS:
registers_.s.full = registers_.a.full;
// No need to worry about byte masking here;
// for the stack it's handled as the emulation runs.
// Cf. the stack_address() macro.
registers_.s = registers_.a;
registers_.s.full = stack_address();
break;
case TSC: