Routines
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34310: XOR Sprite Pair Up
XOR a 16-bit graphic pair onto the screen, then move up one pixel via ScreenPosition1PixelAbove.
Input
HL Screen address
XORSpritePairUp 34310 EX DE,HL XOR the graphic pair onto the screen at HL.
34311 EX (SP),HL
34312 LD A,D
34313 XOR (HL)
34314 LD (HL),A
34315 INC L
34316 LD A,E
34317 XOR (HL)
34318 LD (HL),A
34319 POP DE
34320 DEC L
34321 JP ScreenPosition1PixelAbove Jump to ScreenPosition1PixelAbove.
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