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Routines |
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Used by the routine at FollowLinkPointer.
Reads the word at 47208 and stores it in the word at ActiveTextPointer.
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| ReadPointerFirstDisplay | 47274 | LD HL,(47208) | Read the word at 47208, store it in the word at ActiveTextPointer and clear A. | |
| 47277 | LD (41003),HL | |||
| 47280 | XOR A | |||
| 47281 | LD (40996),A | Clear the command mode at 40996. | ||
| 47284 | LD HL,(40944) | Read the first display link and clear the pointer. | ||
| 47287 | PUSH HL | |||
| 47288 | LD HL,0 | |||
| 47291 | LD (40944),HL | Store the pointer in the first display link. | ||
| ReadPointerFirstDisplay_PrepareCharacterDisplay | 47294 | CALL PrepareCharacterForDisplay | Go to ReadPointerFirstDisplay_ObjectProcessingSource if PrepareCharacterForDisplay returns zero. | |
| 47297 | JR Z,ReadPointerFirstDisplay_ObjectProcessingSource | |||
| 47299 | CP 2 | Jump ahead to ReadPointerFirstDisplay_ReadsFirstDisplay if it is not 2. | ||
| 47301 | JR NZ,ReadPointerFirstDisplay_ReadsFirstDisplay | |||
| ReadPointerFirstDisplay_ObjectProcessingSource | 47303 | LD HL,(41003) | Read the word at ActiveTextPointer. | |
| 47306 | LD A,(HL) | Jump back to ReadPointerFirstDisplay_PrepareCharacterDisplay while the high nibble is not 192. | ||
| 47307 | AND 240 | |||
| 47309 | CP 192 | |||
| 47311 | JR NZ,ReadPointerFirstDisplay_PrepareCharacterDisplay | |||
| 47313 | LD (HL),144 | Use 8 for the character code, then call AllocateMemory to allocate memory. | ||
| 47315 | LD A,8 | |||
| 47317 | CALL AllocateMemory | |||
| 47320 | LD HL,(40942) | Read the list head and make this record the new head. | ||
| 47323 | LD (40942),IX | |||
| 47327 | LD (IX-2),L | Store the low byte of the old list head in the link word ahead of this record. | ||
| 47330 | LD (IX-1),H | Store the high byte of the old list head in the link word ahead of this record, and read the word at 40942+2. | ||
| 47333 | LD HL,(40944) | |||
| 47336 | LD (IX+5),L | Store the low byte of the first display link at offset 5. | ||
| 47339 | LD (IX+6),H | Store the high byte of that link at offset 6 and keep the stacked pointer as the first display link. | ||
| 47342 | POP HL | |||
| 47343 | LD (40944),HL | |||
| 47346 | XOR A | Clear the moved marker and read the room display parameter. | ||
| 47347 | LD (IX+1),A | |||
| 47350 | LD A,(41012) | |||
| 47353 | LD (IX+0),A | Store the record's flag byte. | ||
| 47356 | LD A,(40996) | Copy 40996 to offset 7. | ||
| 47359 | LD (IX+7),A | |||
| 47362 | XOR A | |||
| 47363 | RET | Return. | ||
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Reads the first display link, then stores the saved pointer back into that link.
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| ReadPointerFirstDisplay_ReadsFirstDisplay | 47364 | PUSH AF | Call ReadFirstDisplayLink to read the first display link. | |
| 47365 | CALL ReadFirstDisplayLink | |||
| 47368 | POP AF | |||
| 47369 | POP HL | |||
| 47370 | LD (40944),HL | Store the pointer in the first display link. | ||
| 47373 | RET | Return. | ||
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