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BB04: Routine at BB04
Used by the routine at BA7D.
BB04 LD IX,$AFB8 IX=AFB8.
BB08 LD BC,$B391 BC=B391.
BB0B CALL $BB43 Call BB43.
BB0E BIT 3,(IX+$0A)
BB12 JR Z,$BAEF
BB14 LD A,(IX+$00)
BB17 CP $0E
BB19 JR NZ,$BAEF
BB1B LD A,(IX+$05)
BB1E CP $72
BB20 JR C,$BAEF
BB22 CP $76
BB24 JR NC,$BAEF
BB26 LD IY,$AF64
BB2A BIT 1,(IY+$09)
BB2E JR Z,$BAEF
BB30 SET 4,(IY+$09)
BB34 LD HL,$B9D5
BB37 LD ($B9AD),HL
BB3A LD IX,$AFAC
BB3E SET 0,(IX+$09)
BB42 RET Return.
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