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Routines |
| Prev: B4EC | Up: Map | Next: B643 |
| B61C | PUSH HL | Stash HL on the stack. | ||
| B61D | CALL PrintLine_8 | Call PrintLine_8. | ||
| B620 | LD A,(DE) | A=*DE. | ||
| B621 | LD ($B633),A | Write A to *B633. | ||
| B624 | ADD A,$1E | A+=1E. | ||
| B626 | CPL | Invert the bits in A. | ||
| B627 | LD ($B63B),A | Write A to *B63B. | ||
| B62A | INC DE | Increment DE by one. | ||
| B62B | LD A,(DE) | A=*DE. | ||
| B62C | LD C,A | C=A. | ||
| B62D | INC DE | Increment DE by one. | ||
| B62E | LD A,(DE) | A=*DE. | ||
| B62F | LD ($B635),A | Write A to *B635. | ||
| B632 | LD B,$00 | B=00. | ||
| B634 | LD (HL),$00 | Write 00 to *HL. | ||
| B636 | INC L | Increment L by one. | ||
| B637 | DJNZ $B634 | Decrease counter by one and loop back to B634 until counter is zero. | ||
| B639 | DEC L | Decrease L by one. | ||
| B63A | LD DE,$FF00 | DE=FF00. | ||
| B63D | ADD HL,DE | HL+=DE. | ||
| B63E | DEC C | Decrease C by one. | ||
| B63F | JR NZ,$B632 | Jump to B632 until C is zero. | ||
| B641 | POP HL | Restore HL from the stack. | ||
| B642 | RET | Return. | ||
| Prev: B4EC | Up: Map | Next: B643 |