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From: robin@uhunix1.uhcc.Hawaii.Edu (Robin Amano)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: Disabling Parallel Port by shorting pins?
Message-ID: <11445@uhccux.uhcc.Hawaii.Edu>
Date: 13 Feb 91 18:57:08 GMT
References: <2716@sparko.gwu.edu>
Sender: news@uhccux.uhcc.Hawaii.Edu
Organization: University of Hawaii
Lines: 47

In article <2716@sparko.gwu.edu> timur@seas.gwu.edu () writes:
>I want to disable the parallel port by making the computer think that it's
>sending data.  I think that if you short two (or more) pins, then the
>data-sent signal (or whatever it is) is always triggered, making the 
>computer think that the byte it just sent was received, and it can send
>the next one.  
>
>Can anyone help me?

For PC Technician you need a loop back plug to test the port.
Here is the jumpers you need to make the male db25 connector.

 5-|
15-|

 6-|
13-|

 7-|
12-|

 8-|
10-|

 9-|
11-|

One customer had a xt compatible portable and needed to demo a sales
package.  He wanted to run the program without a printer, so to fake
out the computer we came up with this:

GND pins 11 & 12  or:

11-|
25-|

12-|
24-|

Hope this helps.


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