     $BC2B/48171:   Check Sign of FAC#1

    Jump from $A79F, $B9EA, $BC39, $BC65, $E097:

    BC2B: A5 61     LDA $61
    BC2D: F0 09     BEQ $BC38

    Jump from $BC6B:

    BC2F: A5 66     LDA $66

    Jump from $BC98:

    BC31: 2A        ROL
    BC32: A9 FF     LDA #$FF
    BC34: B0 02     BCS $BC38
    BC36: A9 01     LDA #$01

    Jump from $BC2D, $BC34:

    BC38: 60        RTS

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