|
Routines |
| Prev: 74A4 | Up: Map | Next: 7592 |
| 7564 | CALL ConvertScreenToAttributeBufferAddress | Call ConvertScreenToAttributeBufferAddress. | ||
| 7567 | EX DE,HL | Exchange the DE and HL registers. | ||
| 7568 | LD E,$01 | E=01. | ||
| 756A | LD B,$03 | B=03. | ||
| 756C | PUSH BC | Stash BC on the stack. | ||
| 756D | LD A,(HL) | Jump to 7584 if *HL is equal to 46 or 07. | ||
| 756E | CP $46 | |||
| 7570 | JR Z,$7584 | |||
| 7572 | CP $07 | |||
| 7574 | JR Z,$7584 | |||
| 7576 | LD (HL),$00 | Write 00 to *HL. | ||
| 7578 | PUSH HL | Stash HL on the stack. | ||
| 7579 | CALL ConvertAttributeToScreenBufferAddress | Call ConvertAttributeToScreenBufferAddress. | ||
| 757C | LD B,$08 | B=08. | ||
| 757E | XOR A | A=00. | ||
| 757F | LD (HL),A | Write A to *HL. | ||
| 7580 | INC H | Increment H by one. | ||
| 7581 | DJNZ $757F | Decrease counter by one and loop back to 757F until counter is zero. | ||
| 7583 | POP HL | Restore HL from the stack. | ||
| 7584 | INC HL | Increment HL by one. | ||
| 7585 | POP BC | Restore BC from the stack. | ||
| 7586 | DJNZ $756C | Decrease counter by one and loop back to 756C until counter is zero. | ||
| 7588 | LD A,E | Return if E is zero. | ||
| 7589 | OR A | |||
| 758A | RET Z | |||
| 758B | LD C,$1E | C=1E. | ||
| 758D | ADD HL,BC | HL+=BC. | ||
| 758E | DEC E | Decrease E by one. | ||
| 758F | INC B | Increment B by one. | ||
| 7590 | JR $756C | Jump to 756C. | ||
| Prev: 74A4 | Up: Map | Next: 7592 |