|
Routines |
| Prev: B44A | Up: Map | Next: B4B8 |
| B469 | LD E,(IX+$08) | E=*IX+08. | ||
| B46C | LD D,(IX+$09) | D=*IX+09. | ||
| B46F | LD L,(IX+$0E) | L=*IX+0E. | ||
| B472 | LD H,(IX+$0F) | H=*IX+0F. | ||
| B475 | LD C,(IX+$0A) | C=*IX+0A. | ||
| B478 | DEC C | Decrease C by one. | ||
| B479 | LD B,(IX+$0B) | B=*IX+0B. | ||
| B47C | PUSH BC | Stash BC, DE and HL on the stack. | ||
| B47D | PUSH DE | |||
| B47E | PUSH HL | |||
| B47F | LD B,$08 | B=08. | ||
| B481 | LD A,(DE) | A=*DE. | ||
| B482 | AND (HL) | Merge the bits from *HL. | ||
| B483 | INC HL | Increment HL by one. | ||
| B484 | OR (HL) | Set the bits from *HL. | ||
| B485 | LD (DE),A | Write A to *DE. | ||
| B486 | INC HL | Increment HL by one. | ||
| B487 | INC D | Increment D by one. | ||
| B488 | DJNZ $B481 | Decrease counter by one and loop back to B481 until counter is zero. | ||
| B48A | DEC C | Decrease C by one. | ||
| B48B | JP M,$B4A2 | Jump to B4A2 M. | ||
| B48E | JR NZ,$B496 | Jump to B496 if {} is not zero. | ||
| B490 | SLA (IX+$17) | Shift *IX+17 left (with carry). | ||
| B494 | JR C,$B4A2 | Jump to B4A2 if {} is lower. | ||
| B496 | LD A,E | A=E. | ||
| B497 | ADD A,$20 | A+=20. | ||
| B499 | LD E,A | E=A. | ||
| B49A | JR C,$B47F | Jump to B47F if {} is lower. | ||
| B49C | LD A,D | A=D. | ||
| B49D | SUB $08 | A-=08. | ||
| B49F | LD D,A | D=A. | ||
| B4A0 | JR $B47F | Jump to B47F. | ||
| B4A2 | POP HL | Restore HL from the stack. | ||
| B4A3 | LD D,$00 | D=00. | ||
| B4A5 | LD E,(IX+$16) | E=*IX+16. | ||
| B4A8 | ADD HL,DE | HL+=DE. | ||
| B4A9 | POP DE | Restore DE from the stack. | ||
| B4AA | INC E | Increment E by one. | ||
| B4AB | POP BC | Restore BC from the stack. | ||
| B4AC | DJNZ $B47C | Decrease counter by one and loop back to B47C until counter is zero. | ||
| B4AE | LD B,(IX+$0B) | B=*IX+0B. | ||
| B4B1 | SRL (IX+$17) | Shift *IX+17 right. | ||
| B4B5 | DJNZ $B4B1 | Decrease counter by one and loop back to B4B1 until counter is zero. | ||
| B4B7 | RET | Return. | ||
| Prev: B44A | Up: Map | Next: B4B8 |