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9005: Routine at 9005
Used by the routines at 8C71 and 8CBC.
9005 LD A,(IX+$00) A=IX+00.
9008 DEC A Decrease A by one.
9009 RES 3,A Reset bit 3 of A.
900B INC A Increment A by one.
900C LD (IX+$00),A Write A back to IX+00.
900F LD A,$F0 Write F0 to IX+06.
9011 LD (IX+$06),A
9014 DEC (IX+$04) Decrease IX+04 by three.
9017 DEC (IX+$04)
901A DEC (IX+$04)
901D JP $8DD9 Jump to 8DD9.
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