ASCI u68 (SystemX)

[Brad]

Many thanks.  I'll take a quick look online just to see if I can save you the trouble.  I'm surprised at how little documentation there is for this thing.

As a general rule, does anyone know -- if you have a single board computer like this with serial connector, is that 'live' all the time?  Or do you usually have to invoke a program in order for a terminal to connect to it and use it?

-----Original Message-----
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of drlegendre .
Sent: Friday, October 16, 2015 11:06 AM
To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org>
Subject: Re: ASCI u68 (SystemX)

The Heathkit ET-3400 (another SBC trainer) also used the M6800 CPU. Now I realize that the two machines probably have fairly different ROMs, but otherwise some of the 3400 materials / programs should cross-over to the u68. It might even simply be a matter of translating ROM calls..

Anyway, I have a full set of docs for the ET-3400. If you're interested, I can find a way to get a copy to you.

-Bill

On Fri, Oct 16, 2015 at 11:16 AM, Brad <unclefalter at yahoo.ca> wrote:

> Hey guys,
>
>
>
> Posting this to various forums in the hopes of finding someone in the 
> know
> -
> I have this ASCI u68 system (6800 cpu) that I understand was used in 
> educational environments.  I kind of have it running but know little 
> about assembly language programming, etc.  Or the unit itself.  Have 
> any of you ever messed with these?  It looks like it has a serial 
> connector on its mainboard.. was trying to figure out a way if I could 
> patch it to one of my terminals.
>
>
>
> Also trying to find some simple 6800 assembly programs/routines to 
> test it and see if it really works properly.  There is an MC6821S chip 
> on it (there are three of them actually) and one in the middle is 
> marked 'BAD'.  I understand those handle peripherals.
>
>
>
> I'd also heard rumours there was a second board available for these 
> that gave them BASIC.  I've never seen such a board for sale anywhere 
> - wondered if anyone had seen one in the wild.
>
>
>
> Brad
>
>
>
>
>
>
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