[comp.sys.apple] //c Serial Port Pinout Needed

pmwenzel@tybalt.caltech.edu (Peter M. Wenzel) (06/17/88)

I'm babysitting a friend's //c for the summer and of course he didn't give me
any of the manuals.  Would someone please send me the pinouts for the 5-pin
modem port--I want to make a null-modem cable for it.



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Geva_Apple-Maniac_Patz@cup.portal.com (06/19/88)

Here are the pinouts, according to the Apple //c tech. manual:

Pins numbered clockwise

Pin    Signal
---    ------
1      Data Terminal Ready (DTR)
2      Transmit Data (TD)
3      Ground (GND)
4      Received Data (RD)
5      Data Set Ready (DSR)

Port 1 and 2 pinouts are identical. Note that the //c firmware is very
similar BUT NOT IDENTICAL to the Super Serial card firmware.

%%%%
 Geva
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crimmins@csli.STANFORD.EDU (Mark Crimmins) (06/20/88)

pin#  desc.
----------

1      Data Terminal Readyy (out)
2      Transmit Data (out)
3      Ground (power and signal)
4      Read Data (in)
5      Data set ready (in)

 5     1
  4   2
    3
 (looking at back panel)