Heathkit H-11

From: James Willing <jimw_at_agora.rdrop.com>
Date: Tue Nov 18 17:55:12 1997

On Tue, 18 Nov 1997, Richard Cini wrote:

> What do you think of this...
> I have a guy in Jacksonville FL with a Heathkit H11 system. CPU, dual 8"
> disk drive unit, all software and manuals. Cost of shipping (to NY).
> Is the H11 just a repackaged PDP-11?? What else can you tell me about
> it?

Well... the 'standard' H-11 had a DEC 11/03 (quad wide) cpu card in it,
and from there on it was full of Heath cards that were just different
enough to make life real interesting.

It does however have a standard 18 bit backplane, so many folk installed
more 'normal' DEC cards as time went on.

The Heath disk system did have the virtue of being able to format (really)
blank disks, unlike the DEC floppy sub-system, and was RX-01
media compatable in one mode, and also added a Heath double-density mode
which was not really compatable with much of anything else... (AIR)

Heath distributed a slightly mutated (drivers mostly) version of RT-11
that they dubbed 'HT-11' to support the Heath peripherals. If you are
getting the software, it should not be a problem.

The H-27 disk sub-system is *heavy* (I've got one in the collection)

The Computer Garage - http://www.rdrop.com/~jimw
Computer Garage Fax - (503) 646-0174
Received on Tue Nov 18 1997 - 17:55:12 GMT

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