Wanted: some HP 9000/3xx bits

[Steven M Jones]

Tony Duell wrote:
> 
>> 	98626A RS-232 Serial Port (DIO-I ?) card
> 
> Yes, DIO-I.

The backplane has what appears to be a DIO-I adapter fitted for the top 
slot of the backplane, with two card edge connectors - one impossibly 
close to the top, you'd only ever fit one card.

The rest of the slots use two DIN connectors, a la VME and other busses. 
One looks like a standard VME connector, the other is reverse gender 
IIRC and about a third the pincount.

I'm wondering if these slots are the DIO-II that I've seen mentioned, or 
some other designation.

> The 98626 is a fairly simple RS232 port based, oddly, on the 8250 chip. 
> The 50 pin connector is a stnadard-for-HP pinout, [...]

At the moment I don't need to fuss with it, as there's a 16550 on the 
system board with what looks like a standard "DB9" connector. But thanks 
for the info, it may come in handy later.

>> 	46021A HP-HIL keyboard (courtesy Weirdstuff Warehouse)
> 
> The internals of that keyoard are a little strage.

Hopefully it will turn out to be a working example, and I won't need to 
open it up! I remembered quite liking the keyboard from an HP 700/22 
terminal many years ago, but don't especially care for this one. The 
keys are very loose and wiggle around / rotate on the mechanism, and the 
pitch/width of the keycaps seems to be enough smaller than my Thinkpad 
keyboards that I'll be fumbling a lot.

I know there are converters to allow the use of standard keyboards and 
mice, but at the moment I'm thinking of sticking with more-or-less stock 
parts. Just wondering if there are other HIL keyboard options.

Thanks for the info!
--Steve.