LPT Port w/PTT Control, etc.

Brian Short ke7gh@primenet.com
Tue, 25 Jul 1995 16:06:11 +0000


Added PTT control per N6TR program.  Any other ideas?
73 de Brian

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LPT1 Pin Assignments

Pin 2......BAND DATA "A"
Pin 7......BAND DATA "B"
Pin 8......BAND DATA "C"
Pin 9......BAND DATA "D"

Pin 1......CW STROBE         -EMITTER of NPN
Pin 17.....CW SLCT           -thru 1k resistor to BASE
Pin 18.....GND               -to radio
                             -COLLECTOR to radio

Pin 3......DVK SWITCH #1
Pin 4......DVK SWITCH #2
Pin 5......DVK SWITCH #3
Pin 6......DVK SWITCH #4

Pin 11/25..GND

Pin 12.....DOT PADDLE^
Pin 13.....DASH PADDLE
Pin 14.....PULLUP THRU 10K TO 12/13

Pin 1......PTT STROBE@       -EMITTER of NPN
Pin 16.....PTT SLCT          -thru 1k resistor to BASE
Pin 18.....GND               -to radio
                             -COLLECTOR to radio

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LPT2 Pin Assignments

Pin 2......RADIO 1/2 SELECT

Pin 1......CW STROBE*
Pin 17.....CW SLCT
Pin 18.....GND

Pin 3......DVK SWITCH #1
Pin 4......DVK SWITCH #2
Pin 5......DVK SWITCH #3
Pin 6......DVK SWITCH #4

Pin 11/25..GND

Pin 12.....DOT PADDLE^
Pin 13.....DASH PADDLE
Pin 14.....PULLUP THRU 10K TO 12/13

Pin 1......PTT STROBE@
Pin 16.....PTT SLCT
Pin 18.....GND
                 
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LPT3 Pin Assignments

Pin 1......CW STROBE*
Pin 17.....CW SLCT
Pin 18.....GND

Pin 3......DVK SWITCH #1
Pin 4......DVK SWITCH #2
Pin 5......DVK SWITCH #3
Pin 6......DVK SWITCH #4

Pin 11/25..GND

Pin 12.....DOT PADDLE^
Pin 13.....DASH PADDLE
Pin 14.....PULLUP THRU 10K TO 12/13

Pin 1......PTT STROBE@
Pin 16.....PTT SLCT
Pin 18.....GND

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Use the -AC option to get BAND DATA on LPT1 (only) for
use with Top Ten Decoder etc.

Radio 1/2 Select is always on LPT2.

CW Port and DVK Control are subject to software setup to
enable the outputs.

* See the LPT1 CW Port description above for details.
^ Pins 12/13/14 are used by N6TR etc for CW paddle support.
@ Pin 16 is used by N6TR for rig PTT control.  See LPT1.

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