Re: Los Alamos HP-97: what do you make of this cable? Message #2 Posted by Katie Wasserman on 2 Aug 2009, 3:28 p.m., in response to message #1 by hecube
This 97 was made before HP offered the 97S, you can tell them from the layout of the main circuit board. The wiring looks to me like someone wanted to bring the same control lines out of this 97 as are brought out from the standard 97S. Most of the control lines are indeed accessible from the keyboard/display circuit board and that's why most of the wires go there. Furthermore, there seem to be 4 column scan lines going to the keyboard matrix and that's exactly what's needed for external keypad-like input.
So, this appears to be an early 97 that was retrofitted to interface to something like a 97S i/o pod.
Edited: 3 Aug 2009, 1:41 a.m.
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