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Routines |
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Used by the routine at ClearCoordinateBuffer.
Points at the co-ordinate data and skips the token check when the next pair is empty.
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| ReadBytePointer | 44180 | LD HL,43694 | Use the buffer: co-ordinate data (Buffer_CoordinateData+2). | |
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This entry point is used by the routine at PointPictureOrigin.
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| ReadBytePointer_CheckToken | 44183 | LD A,(HL) | Go to ReadBytePointer_0 if this word is zero. | |
| 44184 | INC HL | |||
| 44185 | OR (HL) | |||
| 44186 | JR Z,ReadBytePointer_0 | |||
| 44188 | INC HL | Advance through the text. | ||
| 44189 | LD A,(HL) | Read the co-ordinate stored at the pointer. | ||
| 44190 | INC HL | Advance through this record. | ||
| 44191 | OR (HL) | Merge the next co-ordinate into the pair. | ||
| 44192 | RET NZ | Return when the co-ordinate pair is not empty. | ||
| ReadBytePointer_0 | 44193 | LD (HL),B | Store B at the second byte of this word. | |
| 44194 | DEC HL | Step back to the first byte. | ||
| 44195 | LD (HL),C | Store C there. | ||
| 44196 | XOR A | Clear A, as the pair was empty and has now been filled from BC. | ||
| 44197 | RET | Return. | ||
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View the equivalent code in;
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