|  | Routines | 
| Prev: F3EF | Up: Map | Next: F434 | 
| 
Used by the routine at Handler_Monsters.
 | ||||
| F41A | LD A,(HL) | Return if *HL is equal to FF. | ||
| F41B | CP $FF | |||
| F41D | RET Z | |||
| F41E | LD A,(DE) | Return if *DE is not zero. | ||
| F41F | AND A | |||
| F420 | RET NZ | |||
| F421 | LD B,(HL) | B=*HL. | ||
| F422 | INC HL | Increment HL by one. | ||
| F423 | LD C,(HL) | C=*HL. | ||
| F424 | PUSH DE | Stash DE on the stack. | ||
| F425 | LD A,$01 | Write 01 to *D3FB. | ||
| F427 | LD ($D3FB),A | |||
| F42A | CALL $F373 | Call F373. | ||
| F42D | XOR A | Write 00 to *D3FB. | ||
| F42E | LD ($D3FB),A | |||
| F431 | POP HL | Restore HL from the stack. | ||
| F432 | LD (HL),B | Write B to *HL. | ||
| F433 | RET | Return. | ||
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