| quill | Routines |
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Used by the routine at FILL_ROUTINE.
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| PIXEL_TO_SCREEN_ADDRESS | 64774 | PUSH BC | Store X and Y co-ordinates | |||||||||||||
| 64775 | CALL 8874 | 'Pixel address' subroutine | ||||||||||||||
| 64778 | LD BC,64786 | BC=pixel conversion table | ||||||||||||||
| 64781 | ADD A,C | |||||||||||||||
| 64782 | LD C,A | C=offset in pixel conversion table | ||||||||||||||
| 64783 | LD A,(BC) | A=value to write to screen memory to set that pixel | ||||||||||||||
| 64784 | POP BC | Retrieve X and Y co-ordinates | ||||||||||||||
| 64785 | RET | |||||||||||||||
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