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Startup routines |
| Up: Map | Next: 81C8 |
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Used by the routine at 81C8. Copies 256 bytes of data from a row of the screen to its destination, in eight 32-byte blocks.
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| 80CC | PUSH HL | |||||||||
| 80CD | LD BC,$0020 | There are 32 bytes per block (row of pixels) | ||||||||
| 80D0 | LDIR | Copy 32 bytes to the destination | ||||||||
| 80D2 | POP HL | |||||||||
| 80D3 | INC H | Point HL at the next block of 32 bytes to copy | ||||||||
| 80D4 | BIT 3,H | Have we copied 8 blocks yet? | ||||||||
| 80D6 | JR Z,$80CC | Jump back if not | ||||||||
| 80D8 | RET | |||||||||
| Up: Map | Next: 81C8 |