[comp.sys.att] Keyboard Cable

jep@oink.UUCP (James E. Prior) (08/29/87)

Are you fed up with the cable that connects your UNIX-PC to its keyboard?

I certainly am.  It is much too short.  So I am looking for a keyboard 
extension cable.  If you know of such a beast, please let me know how I may
get one.

Murphy warns me not to expect such a cable to be available, so I am
prepared to take this matter into my own hands.  

Do you want such a cable?  If so, then please let me know.  Also say
how long you think the cable should be.  How much would you expect such
a cable to cost?  How much would you be willing to spend on it?  Should
the cable be coiled or straight?  Please send me mail with your answers.
I'll post a summary of your replies.  The more responses there are, the more
likely some company would consider making the beast.

I am accustomed to proping up a
monitor on the far side of a desk, propping my feet upon the near edge of
said desk, leaning back and typing with the keyboard on my lap.  The UNIX-PC
keyboard cable is always fighting me.  It looks neat sitting on the box, but as
soon as one pulls it off the box and sits it down in front of the box, the 
coiled cord starts pulling.  It probably would have been long enough, if it
hadn't been coiled.  Does anybody know how to uncoil it without unduly 
stressing the conductors?

I myself, have the means to splice in some extra wire, but it wouldn't be
as nice as a cable done right.  I would sure like to see a good long cable.

My own empirical ohmic study of the cable has established the following
connections as looking into the ends of the cable.  The numbering of pins
is my own.  The ends are identical.

  Bare
 Sheild
  Side
+-+-+-+-+
|1|3|5|7|
+-+-+-+-+
|2|4|6|8|
+-+-+-+-+

  One End     Other End
Bare Sheild  Bare Sheild
     1            1
     2            2
     3            3
     4            6
     5            5
     6            4
     7            7
     8            8

Notice how pins 4 and 6 are swapped, similar to that of a null modem.
-- 
James E. Prior  {ihnp4|cbosgd}!n8emr!oink!jep