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Routines |
| Prev: 39066 | Up: Map | Next: 39263 |
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Used by the routine at 39066.
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| Jump_GraphicLayoutRoutine | 39237 | INC IX | Advance IX to first parameter byte in graphic layout data. | |||||||
| 39239 | SUB 230 | Subtract 230 to get zero-based index of required instruction. | ||||||||
| 39241 | ADD A,A | Load BC with double index of graphic layout data instruction. | ||||||||
| 39242 | LD C,A | |||||||||
| 39243 | LD B,0 | |||||||||
| 39245 | PUSH HL | Stash HL on the stack. | ||||||||
| 39246 | LD HL,39263 | Load HL with start address of table of addresses of graphic layout data handling routines. | ||||||||
| 39249 | ADD HL,BC | Add doubled instruction index as offset to HL to point to address of required routine. | ||||||||
| 39250 | LD A,(HL) | Modify JP instruction at 39260 with this address. |
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| 39251 | LD (39261),A | |||||||||
| 39254 | INC HL | |||||||||
| 39255 | LD A,(HL) | |||||||||
| 39256 | LD (39262),A | |||||||||
| 39259 | POP HL | Restore HL from the stack. | ||||||||
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The operand of the instruction at 39260 represents the addresses of the required graphic layout data handling routine. This is modified by the instructions at 39251 and 39256.
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| 39260 | JP 0 | Jump to appropriate instruction handling routine. | ||||||||
| Prev: 39066 | Up: Map | Next: 39263 |