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optimize new memcpy

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hugova 2025-05-15 16:18:50 +02:00
parent f8dbfd86f9
commit cc46c68290
1 changed files with 9 additions and 5 deletions
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14
wip-hugo/routines/memory/memcpy.s
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@ -13,12 +13,16 @@ change_length:
DEC length DEC length
BNE loop BNE loop
;;check if length hi byte is 0. if it is end this
LDA length + 1
BEQ loop_end
DEC length +1 DEC length +1
JMP loop BPL loop
JMP loop_end
;;;;check if length hi byte is 0. if it is end this
;;LDA length + 1
;;BEQ loop_end
;;DEC length +1
;;JMP loop
y_overflow: y_overflow:
LDY #$00 LDY #$00
INC B_start + 1 INC B_start + 1