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Routines |
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7632 | LD HL,$D91F | Point HL at the end of the buffer at D90B | ||||||||
7635 | RRCA | Discard the baseline bit | ||||||||
7636 | LD C,$07 | We will consider the remaining 7 bits | ||||||||
7638 | LD B,$03 | The buffer is 3 character squares wide | ||||||||
763A | RRCA | Drop a bit into the carry flag | ||||||||
763B | RL (HL) | Pick it up in the buffer and shift the other pixels in this row one to the left | ||||||||
763D | DEC HL | |||||||||
763E | DJNZ $763B | |||||||||
7640 | DEC C | Next bit | ||||||||
7641 | JR NZ,$7638 | Jump back until all 7 bits in the column are done | ||||||||
7643 | RET |
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