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Routines |
| Prev: B293 | Up: Map | Next: B2C0 |
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Used by the routine at B208.
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| B2A4 | PUSH BC | Stash BC and DE on the stack. | ||
| B2A5 | PUSH DE | |||
| B2A6 | INC HL | Increment HL by one. | ||
| B2A7 | LD A,(HL) | A=*HL. | ||
| B2A8 | XOR %00000100 | Flip bit 2. | ||
| B2AA | LD (DE),A | Write A to *DE. | ||
| B2AB | DEC HL | Decrease HL by one. | ||
| B2AC | DEC DE | Decrease DE by one. | ||
| B2AD | LD A,(HL) | A=*HL. | ||
| B2AE | LD (DE),A | Write A to *DE. | ||
| B2AF | INC HL | Increment HL by two. | ||
| B2B0 | INC HL | |||
| B2B1 | DEC DE | Decrease DE by one. | ||
| B2B2 | DEC C | Decrease C by one. | ||
| B2B3 | JR NZ,$B2A6 | Jump to B2A6 until C is zero. | ||
| B2B5 | EX DE,HL | Exchange the DE register with the shadow HL register. | ||
| B2B6 | POP HL | Restore HL from the stack. | ||
| B2B7 | LD BC,$0040 | HL+=0040. | ||
| B2BA | ADD HL,BC | |||
| B2BB | EX DE,HL | Exchange the DE register with the shadow HL register. | ||
| B2BC | POP BC | Restore BC from the stack. | ||
| B2BD | DJNZ $B2A4 | Decrease counter by one and loop back to B2A4 until counter is zero. | ||
| B2BF | RET | Return. | ||
| Prev: B293 | Up: Map | Next: B2C0 |