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Routines |
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Used by the routines at DrawSpriteObject and DrawLargeSprite.
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| DrawSprite | 68F6 | LD A,(HL) | Read the current screen data (row 01). | |||||||||
| 68F7 | EXX | Switch to the shadow registers. | ||||||||||
| 68F8 | LD (HL),A | Save row 01 background data to the sprite background buffer. | ||||||||||
| 68F9 | INC HL | Move to the next position in the background buffer. | ||||||||||
| 68FA | EXX | Switch back to the normal registers. | ||||||||||
| 68FB | LD A,(BC) | Write sprite pixel data to row 01 of the screen buffer. | ||||||||||
| 68FC | LD (HL),A | |||||||||||
| 68FD | INC BC | Move to the next sprite data byte. | ||||||||||
| 68FE | INC H | Move to row 02 in the screen buffer. | ||||||||||
| 68FF | LD A,(BC) | Write sprite pixel data to row 02 of the screen buffer. | ||||||||||
| 6900 | LD (HL),A | |||||||||||
| 6901 | INC BC | Move to the next sprite data byte. | ||||||||||
| 6902 | INC H | Move to row 03 in the screen buffer. | ||||||||||
| 6903 | LD A,(HL) | Read the current screen data (row 03). | ||||||||||
| 6904 | EXX | Switch to the shadow registers. | ||||||||||
| 6905 | LD (HL),A | Save row 03 background data to the sprite background buffer. | ||||||||||
| 6906 | INC HL | Move to the next position in the background buffer. | ||||||||||
| 6907 | EXX | Switch back to the normal registers. | ||||||||||
| 6908 | LD A,(BC) | Write sprite pixel data to row 03 of the screen buffer. | ||||||||||
| 6909 | LD (HL),A | |||||||||||
| 690A | INC BC | Move to the next sprite data byte. | ||||||||||
| 690B | INC H | Move to row 04 in the screen buffer. | ||||||||||
| 690C | LD A,(BC) | Write sprite pixel data to row 04 of the screen buffer. | ||||||||||
| 690D | LD (HL),A | |||||||||||
| 690E | INC BC | Move to the next sprite data byte. | ||||||||||
| 690F | RET | Return. | ||||||||||
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