     $FBCD/64461:   IRQ Entry Point

    FBCD: A5 A8     LDA $A8
    FBCF: D0 12     BNE $FBE3
    FBD1: A9 10     LDA #$10
    FBD3: A2 01     LDX #$01
    FBD5: 20 B1 FB  JSR $FBB1
    FBD8: D0 2F     BNE $FC09
    FBDA: E6 A8     INC $A8
    FBDC: A5 B6     LDA $B6
    FBDE: 10 29     BPL $FC09
    FBE0: 4C 57 FC  JMP $FC57

    Jump from $FBCF:

    FBE3: A5 A9     LDA $A9
    FBE5: D0 09     BNE $FBF0
    FBE7: 20 AD FB  JSR $FBAD
    FBEA: D0 1D     BNE $FC09
    FBEC: E6 A9     INC $A9
    FBEE: D0 19     BNE $FC09

    Jump from $FBE5:

    FBF0: 20 A6 FB  JSR $FBA6
    FBF3: D0 14     BNE $FC09
    FBF5: A5 A4     LDA $A4
    FBF7: 49 01     EOR #$01
    FBF9: 85 A4     STA $A4
    FBFB: F0 0F     BEQ $FC0C
    FBFD: A5 BD     LDA $BD
    FBFF: 49 01     EOR #$01
    FC01: 85 BD     STA $BD
    FC03: 29 01     AND #$01
    FC05: 45 9B     EOR $9B
    FC07: 85 9B     STA $9B

    Jump from $FBD8, $FBDE, $FBEA, $FBEE, $FBF3, $FC14, $FC2E, $FC3D, $FC4C, $FBCB:

    FC09: 4C BC FE  JMP $FEBC

    Jump from $FBFB:

    FC0C: 46 BD     LSR $BD
    FC0E: C6 A3     DEC $A3
    FC10: A5 A3     LDA $A3
    FC12: F0 3A     BEQ $FC4E
    FC14: 10 F3     BPL $FC09

    Jump from $FC91:

    FC16: 20 97 FB  JSR $FB97
    FC19: 58        CLI
    FC1A: A5 A5     LDA $A5
    FC1C: F0 12     BEQ $FC30
    FC1E: A2 00     LDX #$00
    FC20: 86 D7     STX $D7
    FC22: C6 A5     DEC $A5
    FC24: A6 BE     LDX $BE
    FC26: E0 02     CPX #$02
    FC28: D0 02     BNE $FC2C
    FC2A: 09 80     ORA #$80

    Jump from $FC28:

    FC2C: 85 BD     STA $BD
    FC2E: D0 D9     BNE $FC09

    Jump from $FC1C:

    FC30: 20 D1 FC  JSR $FCD1
    FC33: 90 0A     BCC $FC3F
    FC35: D0 91     BNE $FBC8
    FC37: E6 AD     INC $AD
    FC39: A5 D7     LDA $D7
    FC3B: 85 BD     STA $BD
    FC3D: B0 CA     BCS $FC09

    Jump from $FC33:

    FC3F: A0 00     LDY #$00
    FC41: B1 AC     LDA ($AC),Y
    FC43: 85 BD     STA $BD
    FC45: 45 D7     EOR $D7
    FC47: 85 D7     STA $D7
    FC49: 20 DB FC  JSR $FCDB
    FC4C: D0 BB     BNE $FC09

    Jump from $FC12:

    FC4E: A5 9B     LDA $9B
    FC50: 49 01     EOR #$01
    FC52: 85 BD     STA $BD

    Jump from $FC68, $FC6F, $FC73, $FC7A, $FCBB:

    FC54: 4C BC FE  JMP $FEBC

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