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Routines |
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Used by the routine at SetUpPiece.
Moves the screen address of the segment that is being drawn along by the column step of its type, and then clears the column step and the horizontal step ready for the next segment.
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| AdvanceScreenAddress | 52469 | LD A,(52809) | The segment screen address. | |
| 52472 | LD B,A | B=A. | ||
| 52473 | LD A,(52790) | The column step. | ||
| 52476 | ADD A,B | A gains B. | ||
| 52477 | LD (52809),A | Update the segment screen address. | ||
| 52480 | XOR A | Clear A. | ||
| 52481 | LD (52790),A | Update the column step. | ||
| 52484 | LD (52789),A | Update the horizontal step. | ||
| 52487 | RET | Return. | ||
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