the attachment is what I think you asked for
PK-232 Sound Card Interface
EXPERIENCED PROGRAMMERS, ENGINEERS AND TECHNICIANS ONLY!
Do NOT use these commands unless you thoroughly understand the operation of the
PK-232 in the EXPert mode!
; Do not connect the PK-232 radio port 1/2 squelch input
: when the sound card interface is connected!
; This command sequence selects the sound card or the PK-232
; as the modem source for the radio ports 1 and 2.
; This command sequence operates the relay and the led
; on sound card interface daughterboard. When the relay
; is pulled in and the led is ON, the sound card input and output
; interface is on the PK-232 external modem connector.
; Factory default on power up is relay de-energized and led OFF.
; The following commands assume the PK-232 command (CMD:) mode is active.
; Use HyperTerminal, Timewave ModemSwitch(tm) terminal or other dumb
; terminal program to manually enter these commands to become familiar with
; their effects on the PK-232.
; Experienced programmers who wish to integrate these commands
; into a control program should consult the PK-232 technical manual for
; details on the PK-232 host mode. Also recommended is the Zilog Z8536
expert mode on
select 8536 port A data direction register
set all port A i/o to OUTPUT except PA3
select 8536 port A control register
Pulls in relay and turns on led by setti