[sebhc] HDOS sysgen questions (and problems)

Bob Shannon bshannon at tiac.net
Mon Jan 8 17:25:20 CST 2007

Happy New Year,

Getting back to old computers once again, I tested the disk Mark kindly
sent.  The machine 'seems' to boot, but I get gibberish on the console.

Typing seems to echo gibberish, sure looks like a baud rate issue to me.

I don't have much documentation, and what I have is not what I expect
from Heath.  So how do I figure out what baud rate my H19-part and
my H89-part are speaking to one another?

What baud rate is the CP/M disk image expecting?

Just how easy is it to 'jumper' the H89-part to something other than the
H19-part?  It would be really cool if you could do that from outside the

----- Original Message ----- 
From: "Mark Garlanger" <garlanger at gmail.com>
To: <sebhc at sebhc.org>
Sent: Wednesday, November 29, 2006 6:35 PM
Subject: Re: [sebhc] HDOS sysgen questions (and problems)

>I sent out a copy of CP/M on soft-sectored disks to Bob Shannon, maybe
> he'll have a chance to make an image of it. I didn't have time to make
> a soft-sectored HDOS disk though, and won't be able to do anything
> with my heath computers until after the New Year.
> Have you looked at the 'unofficial' HDOS 3.0 images that are in the
> archives? If I remember correctly, the notes mentioned that they are
> soft-sectored images but I haven't had a chance to played with them to
> verify that.

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