$E4AD/58541:   Patch for BASIC Call to CHKOUT

Jump from $E118:

E4AD: 48        PHA
E4AE: 20 C9 FF  JSR $FFC9     ; Set Output
E4B1: AA        TAX
E4B2: 68        PLA
E4B3: 90 01     BCC $E4B6
E4B5: 8A        TXA

Jump from $E4B3:

E4B6: 60        RTS

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