Difference between Heath H88 and H89?

From: David C. Jenner <djenner_at_halcyon.com>
Date: Mon Sep 8 12:32:54 1997

Kai Kaltenbach wrote:
> Does anyone know what the difference is between
> an H88 and H89? Externally, they look identical except for the badging.
> Are they software compatible?

The H88 was a cassette-based Z-80 system. I got one by upgrading an
H-19 terminal. (I believe you could also buy it as a system.) When you
upgraded, you replaced the H-19 "badge" with an H-88 "badge".

You could also upgrade the H-88 to an H-89 by adding a hard disk
controller and floppy disk. When you upgraded, you replaced the H-88
"badge" with an H-89 "badge".

So, it's quite possible that not only do they look identical externally,
they look identical internally. If what you saw DOESN'T have a floppy
disk, then maybe it is the cassette-based system. Look inside. I have
the cassette software, if you are masochistic enough to want a copy of
it.

You might be able to find a hard disk controller and make it into an
H-89, if you like. It shouldn't be too hard to find a floppy drive that
works, just plug in a DEC RX50 dual floppy! My H-89 has in fact the
original prototype (DAM Drive) of the dual floppy, made by T and E
Engineering. DEC later bought them out for the Rainbow/uPDP/uVAX, etc.
If you need an RX50 drive, I can get you one.

Dave
Received on Mon Sep 08 1997 - 12:32:54 BST