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Line Printer (LPT) Pin Assignments
CT V9.26
Each LPT has up to 12 ouput pins: 1-9, 14, 16, 17
----------------------- LPT1
Antenna switch data: 2, 7, 8, 9 Top Ten Devices
Antenna switch strobe: 14
CW Keying: 1
CW Pullup: 17
DVK F1-F4: 3, 4, 5, 6
Radio1/Radio2 control: 16 this used to be LPT2 pin2
----------------------- LPT2
Antenna switch data: 2, 7, 8, 9 for second radio
Antenna switch strobe: 14
Radio1/Radio2 control: 16 for second radio - inverse of LPT1
****************************************************************************
Proposed pin assignments for V9.27
----------------------- LPT1
Antenna switch data: 2, 7, 8, 9 Top Ten Devices
Antenna switch strobe: 14
CW Keying: 1
CW Pullup: 17
DVK F1-F4: 3, 4, 5, 6
Radio1/Radio2 control: 16
----------------------- LPT2
Antenna switch data: 2, 7, 8, 9 for second radio
Antenna switch strobe: 14
Split headset bit: 16 set and cleared with ALT-? to
control headset audio per AB6FO
CW PTT: 1 to avoid relay chatter
Escape bit for DVK: 17 pulsed low to halt DVK
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ken@packetcluster.com (Ken Wolff)
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