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Fixed BRK handler to retain value of A-reg.

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This commit is contained in:
Martin Haye 2017-01-13 07:50:23 -08:00
parent 2f8de46d0e
commit 18c9e9528f
1 changed files with 2 additions and 1 deletions
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Platform/Apple/virtual/src/core/mem.s
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@ -419,10 +419,11 @@ brkHandler:
pla ; retrieve saved P reg
pha
and #$10 ; check for BRK bit
beq _jbrk ; if not brk, handle without bank switch
beq + ; if not brk, handle without bank switch
bit setROM ; for BRK, do bank switch
bit $c051 ; also switch to text screen 1
bit $c054
+ lda $45
_jbrk jmp $1111 ; self-modified by init
;------------------------------------------------------------------------------