ASCI u68 (SystemX)

[drlegendre .]

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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>