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Don't clobber storeByteHigh and storeByteLow in peekWord in calculator.asm

This commit is contained in:
Juhani Krekelä 2022-08-18 14:31:04 +03:00
parent a993cab542
commit 5cfae260fd
1 changed files with 11 additions and 2 deletions
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13
calculator.asm
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@ -308,12 +308,21 @@ tmp2LoadWord01:
; out:
; r0:r1 = word
; clobbers:
; r2, r2
; r2, r3
peekWord:
cleq r0, r0, popWord
store peekWordHigh, r0
store peekWordLow, r1
cleq r0, r0, pushWord
; Return SP back to where it was
load r0, SP+0
load r1, SP+1
xor r2, r2
load r3, lit02
cleq r0, r0, addWord
store SP+0, r0
store SP+1, r1
load r0, peekWordHigh
load r1, peekWordLow
ret