HP-85 Re: anyone in rochester?

From: Tony Duell <ard_at_p850ug1.demon.co.uk>
Date: Thu Aug 28 17:07:25 2003

> Some day I may finally produce the HP 85 ROM emulator, but the way things
> are going, don't hold your breath :-(

It's not going to be that simple -- the HP85 CPU bus is somewhat strange...

>
> BTW I have finally managed to get a 98155A keyboard for my 9915's

As you've doubtless realised by now, it's just a matrix of switches, and
the matrix layout is the same as for the HP85 (the service manual for
which is easy enough to obtain, on the MoHPC CD-ROMs). I think I posted
the DB25 connector pinout a few months back -- if not, I can dig it out.

> > The 85 is a fine machine, it's too bad that they saddled it with a tape
> > drive! It would have been a great machine if they would have replaced the
> > tape drive with a 3.5" floppy drive.
> But they did! Its called the HP Integral PC. Its faster, more compact,

THe integral was, indeed, supposed to the the replacement for the 85.
That's why one of the options was to have Technical BASIC in ROM.

> has an ergonomic keyboard, and even has Unix when you want to go around
> the back and fiddle with things.
>
> Too bad its not as cute as the 85.

Eh? I think the Integral is a much nicer machine (both in electronic
design and styling) than the 85...

-tony
Received on Thu Aug 28 2003 - 17:07:25 BST