HP HP-2117F on ebay

[Glen Slick]

On 1/5/07, Jay West <jwest at classiccmp.org> wrote:
> I'd yank all those 64K cards and just run with one 256kw board, keeping the
> 2nd 256kw board for spare. All those "little" 64k boards just suck up power
> and don't give you much extra memory. I generally don't run things that
> would require more than a pittance of ram anyways.... so others here will
> certainly disagree with me on this point.
>

Extra RAM is always good for making the self-test count higher on the
blinkenlights.  :-)

> I just recognized the "unknown" board at the top in slot 25, it's a PSI
> (Programmable Serial Interface) board (built on a 5180-1953). I think that's
> a 3rd party board. I would like more info on these boards if anyone has it.
> Sketchy info follows that may only be half-accurate: There are four Z80's?
> on board as I recall, and 3 proms to dump your z80 code in to.

That sounded similar to what I remembered about the 12792 8-Channel
Mux, but I just looked at the manual and it has a single Z80, DMA,
CTC, 4 SIO/2s, and 16K of DRAM.  I wonder if there is anything
interesting you could do with those with your own firmware.

> Warren... I'll gladly trade some of my HP boards in exchange for one or two
> of the microcircuit boards in there ;)
>

I have a few 12566 boards and some relay boards, forget their number.

> I have looked for those 9 pin power supply connectors
> too, to no avail :( I'd love to find some of the new crimp pins at least!!
> AMP doesn't seem to remember making them.

I'd like to make a real plug for the battery backup 820ohm thermistor
bypass.  I just have a resistor with its legs folded over wedged into
the connector for now.

-Glen