Routines
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64756: Scroll Window: Next Pixel Line
Used by the routine at ScrollWindow_Scroll.
Moves HL down one pixel line on the screen.
Input
HL Screen address
ScrollWindow_NextLine 64756 INC H
64757 LD A,H
64758 AND 7
64760 RET NZ
64761 LD A,L
64762 ADD A,32
64764 LD L,A
64765 RET C
64766 LD A,H
64767 SUB 8
64769 LD H,A
64770 RET
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