H89 docs/help requested

From: Glen Goodwin <acme_ent_at_bellsouth.net>
Date: Mon Dec 10 22:32:22 2001

> From: Tony Duell <ard_at_p850ug1.demon.co.uk>

> The H89 is a little strange. It's really a serial terminal (almost the
> same as a H19) and a Z80-based computer in the same box. Yes, they
> communicate via an RS232 link between the terminal logic board and the
> CPU board.

A *little* strange?
 
> So the problem could be in just about any area of the unit.

Great! ;>)

> I would start by ignoring the computer part for the moment and turning it

> back into a terminal. Disconnect the 0.1" header jumper between the
> terminal logic PCB and the CPU PCB. Connect one of the serial sockets on
> the back (normally connected to the triple serial card plugged into the
> CPU board) to the connector on the terminal logic PCB. And then short
> pins 2 and 3 on this serial socket.

[snip a lot more really expert advice]

Tony, thanks a million. I'd really like to get this baby up and running,
as it's the only machine I have which uses 5.25" hard-sectored floppies.
I'm pretty sure I'll be able to identify the components you mention by
eyeballing them (I have no docs) and am looking forward to doing this in
the next week or so, but in the meantime, can you answer just one more
question for me:

How do I open this friggin' box!_at_!$#&!

TIA,

Glen
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Received on Mon Dec 10 2001 - 22:32:22 GMT