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44557: Colour Sector Square
Used by the routine at DrawSectorMap.
Sets the attributes of a block of two by two characters.
Input
A Attribute
BC Offset from 22528
ColourSectorSquare 44557 LD HL,22528 Point HL at the attribute file...
44560 ADD HL,BC ...and add the offset.
44561 LD (HL),A Colour the top left character...
44562 INC L ...move to the right...
44563 LD (HL),A ...and colour the top right character.
44564 LD DE,31 Use an offset of 31...
44567 ADD HL,DE ...to move to the character on the left of the next row.
44568 LD (HL),A Colour the bottom left character...
44569 INC L ...move to the right...
44570 LD (HL),A ...and colour the bottom right character.
44571 RET Return.
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