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Joined: Dec 2009
What is also strange is the seller's description that numbers on the display of both the instrument and the HP-97 change when they are switched on.
The HP-97 loses its memory when you power cycle it. The changing numbers display either means that the HP-97 is broken, or that the instrument is directly affecting the operation of the HP-97 (so using it as a normal programmable calculator may no longer be possible). Alternatively, the modifications may have added non-volatile memory to the HP-97 (unlikely, but *very* interesting).
Lets hope that PDP11 posts a note when he has a chance to look at that HP-97.
**vp