[ClassicCMP] Heath H89 diskette request - test-drb@ccmp.vtda.org

9 Apr 2000

...
 On Sun, Apr 09, 2000 at 03:24:06PM -0400, allisonp
wrote:
> >All H-89's were sold in kit form.  The H-88 is another story.  These
were
...
 > >early all in one computers and did have 8080
CPU's in the beginning. Most
...
   H-88 units were upgrades to the H-19 terminals. 
 Wrong!  the H88 was the diskless version of the h89 and was z80.  The h8x
 were all z80.  The basic design was H19 terminal with an additional Z80
 based card (with peripherals on ad in cards). 
Which part is wrong, that it's an upgrade from the H19, or that it's
substantially different from the H89?  I'm pretty sure I remember Heath
selling an H19-to-H89 upgrade kit, but I dunno where the H88 fits in. 

That there was an 8080 in some versions.   The H8 was the 8080 machine.

There was an h19 to h88/89/90 upgrade and that was the cpu, PS and IO.
The base H8x was a h19 with those added items.  In many ways it was not
unlike a Vt180 approach.

Aquired two H89s and gave them away.  Kept the H19 I built in 1978.

Allison