|
Routines |
| Prev: 49470 | Up: Map | Next: 49647 |
|
Used by the routine at 49132.
|
||||
| 49484 | BIT 7,(IX+7) | Test bit 7 of *IX+7. | ||
| 49488 | LD HL,50060 | HL=50060. | ||
| 49491 | JR NZ,49498 | Jump to 49498 if bit 7 of *IX+7 is set. | ||
| 49493 | LD A,32 | A=32. | ||
| 49495 | LD C,(HL) | C=*HL. | ||
| 49496 | JR 49501 | Jump to 49501. | ||
| 49498 | LD A,(HL) | A=*HL. | ||
| 49499 | LD C,32 | C=32. | ||
| 49501 | CP (IX+0) | Return if A is not equal to *IX+0. | ||
| 49504 | RET NZ | |||
| 49505 | LD (IX+0),C | Write C to *IX+0. | ||
| 49508 | PUSH IX | Stash IX on the stack. | ||
| 49510 | CALL 49613 | Call 49613. | ||
| 49513 | POP IX | Restore IX from the stack. | ||
| 49515 | LD A,(49637) | A=*49637. | ||
| 49518 | AND %00000011 | Keep only bits 0-1. | ||
| 49520 | JR NZ,49524 | Jump to 49524 if A is not zero. | ||
| 49522 | ADD A,2 | A+=2. | ||
| 49524 | LD (IX+8),A | Write A to *IX+8. | ||
| 49527 | RET | Return. | ||
|
This entry point is used by the routine at 49132.
|
||||
| 49528 | LD HL,50060 | HL=50060. | ||
| 49531 | LD A,(HL) | A=*HL. | ||
| 49532 | SUB 32 | A-=32. | ||
| 49534 | LD B,A | B=A. | ||
| 49535 | LD A,(IX+0) | A=*IX+0. | ||
| 49538 | BIT 7,(IX+7) | Jump to 49558 if bit 7 of *IX+7 is not set. | ||
| 49542 | JR Z,49558 | |||
| 49544 | SUB 6 | A-=6. | ||
| 49546 | CP 32 | Jump to 49568 if A is lower than 32. | ||
| 49548 | JR C,49568 | |||
| 49550 | CP (HL) | Compare A with *HL. | ||
| 49551 | JR Z,49555 | Jump to 49555 if {} is zero. | ||
| 49553 | JR NC,49568 | Jump to 49568 if {} is higher. | ||
| 49555 | SUB B | A-=B. | ||
| 49556 | JR 49568 | Jump to 49568. | ||
| 49558 | ADD A,6 | A+=6. | ||
| 49560 | CP 32 | Jump to 49568 if A is lower than 32. | ||
| 49562 | JR C,49568 | |||
| 49564 | CP (HL) | Jump to 49568 if A is higher than *HL. | ||
| 49565 | JR NC,49568 | |||
| 49567 | ADD A,B | A+=B. | ||
| 49568 | LD L,(IX+1) | L=*IX+1. | ||
| 49571 | PUSH IX | Stash IX on the stack. | ||
| 49573 | LD IX,49811 | IX=49811. | ||
| 49577 | LD B,4 | B=4 (counter). | ||
| 49579 | LD DE,13 | DE=0013. | ||
| 49582 | CP (IX+0) | Jump to 49594 if A with *IX+0 is zero. | ||
| 49585 | JR Z,49594 | |||
| 49587 | ADD IX,DE | IX+=DE. | ||
| 49589 | DJNZ 49582 | Decrease counter by one and loop back to 49582 until counter is zero. | ||
| 49591 | POP IX | Restore IX from the stack. | ||
| 49593 | RET | Return. | ||
| 49594 | LD C,A | C=A. | ||
| 49595 | LD A,(IX+1) | A=*IX+1. | ||
| 49598 | XOR L | Reset the bits from L. | ||
| 49599 | AND %00011111 | Keep only bits 0-4. | ||
| 49601 | LD A,C | A=C. | ||
| 49602 | JR NZ,49587 | Jump to 49587 if {} is not zero. | ||
| 49604 | LD A,(IX+8) | A=*IX+8. | ||
| 49607 | POP IX | Restore IX from the stack. | ||
| 49609 | LD (IX+8),A | Write A to *IX+8. | ||
| 49612 | RET | Return. | ||
| 49613 | LD IX,49637 | IX=49637. | ||
| 49617 | RR (IX+1) | Rotate *IX+1 right. | ||
| 49621 | BIT 4,(IX+0) | Jump to 49628 if bit 4 of *IX+0 is zero. | ||
| 49625 | JR Z,49628 | |||
| 49627 | CCF | Invert the carry flag. | ||
| 49628 | RL (IX+0) | Rotate *IX+0 left. | ||
| 49632 | RL (IX+1) | Rotate *IX+1 left. | ||
| 49636 | RET | Return. | ||
| 49637 | DEFB 1,0 | |||
| 49639 | DEFB 1,0,32,0,255,255,224,255 | |||
| Prev: 49470 | Up: Map | Next: 49647 |