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55673: Note Segment Start
Used by the routine at CountVerticalContact.
Stores the pixel position of the start of the segment, with the offsets of the view added, in StartColumn and StartRow.
NoteSegmentStart 55673 LD A,(52803) The segment column.
55676 LD B,A B=A.
55677 LD A,(52801) The horizontal offset.
55680 ADD A,B A gains B.
55681 LD (52821),A Update the start column.
55684 LD A,(52804) The segment row.
55687 LD B,A B=A.
55688 LD A,(52802) The vertical offset.
55691 ADD A,B A gains B.
55692 LD (52822),A Update the start row.
55695 RET Return.
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