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B3AF: Get Horizontal Position
Used by the routine at HandlePointer.
Fetches the horizontal position of an object.
Input
IY The address of the object
Output
HL The horizontal position
GetHorizontalPosition B3AF LD L,(IY+$01) Fetch the low byte.
B3B2 LD H,(IY+$02) Fetch the high byte.
B3B5 RET Return.
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