$EDEF/60911:   Send UNTALK

Jump from $F340, $F528, $FFAB:

EDEF: 78        SEI
EDF0: 20 8E EE  JSR $EE8E     ; Serial Clock Off
EDF3: AD 00 DD  LDA $DD00     ; CIA2: Data Port A (Serial Bus, RS232, VIC Base Mem.)
EDF6: 09 08     ORA #$08
EDF8: 8D 00 DD  STA $DD00     ; CIA2: Data Port A (Serial Bus, RS232, VIC Base Mem.)
EDFB: A9 5F     LDA #$5F
EDFD: 2C        .BYTE $2C

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