$C100/49408:   Turn LED on for current drive

C100: 78        SEI
C101: A9 F7     LDA #$F7
C103: 2D 00 1C  AND $1C00
C106: 48        PHA
C107: A5 7F     LDA $7F
C109: F0 05     BEQ $C110
C10B: 68        PLA
C10C: 09 00     ORA #$00
C10E: D0 03     BNE $C113
C110: 68        PLA
C111: 09 08     ORA #$08
C113: 8D 00 1C  STA $1C00
C116: 58        CLI
C117: 60        RTS

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