Routines
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81D4: Routine at 81D4
Used by the routines at B1A6, B288 and EFC7.
81D4 EXX
81D5 XOR $01
81D7 LD (IY-$3C),A
81DA LD E,(IY+$23)
81DD LD D,(IY+$28)
81E0 LD BC,$0400
This entry point is used by the routine at EFC7.
81E3 LD A,(DE)
81E4 EX AF,AF'
81E5 INC DE
81E6 LD A,(DE)
81E7 DEC DE
81E8 LD L,A
81E9 LD H,$7B
81EB LDI
81ED EX AF,AF'
81EE LD H,$7B
81F0 LD L,A
81F1 LDI
81F3 JP PE,$81E3
81F6 EXX
81F7 RET
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