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Routines |
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75B4 | LD HL,$FFC1 | Point HL at the top left corner of the text that was just written into the graphic buffer | ||||||||
75B7 | ADD HL,DE | |||||||||
75B8 | LD DE,$0007 | This is the 'distance' (in bytes) between the left and right edges of the graphic buffer | ||||||||
75BB | LD BC,$75A3 | Point BC at the graphic data table at 75A3 | ||||||||
75BE | LD A,(BC) | Pick up a bubble left-edge graphic byte in A | ||||||||
75BF | INC C | Move BC along in the graphic data table | ||||||||
75C0 | INC A | Have we finished drawing the edges? | ||||||||
75C1 | RET Z | Return if so | ||||||||
75C2 | OR (HL) | Superimpose the bubble left-edge graphic byte | ||||||||
75C3 | LD (HL),A | |||||||||
75C4 | ADD HL,DE | Move over to the right edge | ||||||||
75C5 | LD A,(BC) | Pick up a bubble right-edge graphic byte in A | ||||||||
75C6 | INC C | Move BC along in the graphic data table | ||||||||
75C7 | OR (HL) | Superimpose the bubble right-edge graphic byte | ||||||||
75C8 | LD (HL),A | |||||||||
75C9 | INC HL | Move back to the left edge, one pixel row down | ||||||||
75CA | JR $75BE | Jump back to superimpose another edge graphic byte |
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