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Routines |
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| F9ED | PUSH HL | |||||||||
| F9EE | LD H,A | Point HL at byte 0x13 of the character's buffer | ||||||||
| F9EF | LD L,$13 | |||||||||
| F9F1 | LD A,(HL) | Is there already an uninterruptible subcommand routine address MSB there? | ||||||||
| F9F2 | AND A | |||||||||
| F9F3 | JR NZ,$F9F8 | Jump if so | ||||||||
| F9F5 | LD (HL),B | Otherwise copy the routine address from BC into bytes 0x12 and 0x13 of the character's buffer, thus setting his uninterruptible subcommand | ||||||||
| F9F6 | DEC HL | |||||||||
| F9F7 | LD (HL),C | |||||||||
| F9F8 | POP HL | |||||||||
| F9F9 | RET | |||||||||
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