Routines
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876B
8761: Step back one six-pixel column
Used by the routine at
STORY_CHAR
.
Input
HL
The screen byte
C
The pixel within it
BACK_ONE
8761
LD A,C
8762
SUB $06
8764
LD C,A
8765
RET NC
8766
ADD A,$08
8768
LD C,A
8769
DEC L
876A
RET
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