seeking Motorola M68MM01A2 documentation

Chris Elmquist chrise at pobox.com
Tue Jan 18 13:12:56 CST 2022


On Tuesday (01/18/2022 at 02:09PM -0500), Bill Degnan wrote:
> Not exactly a match but I do have this, if it helps:
> https://www.vintagecomputer.net/motorola/mek6800d2/MEK6800D2.pdf

Thanks Bill.  I have that too and in fact a couple D2 boards so
I am set there.

This is a specific detail so that I can make mods to the board without
having to reverse engineer it first.  But I suspect it will come to that.

Thanks anyway!

Chris

> On Tue, Jan 18, 2022 at 1:54 PM Chris Elmquist via cctalk <
> cctalk at classiccmp.org> wrote:
> 
> >
> > I have quite a few Motorola Microsystems Exorciser boards including this
> > 6800 single board computer for which I am lacking any documentation.
> >
> > I've seen a brochure in Al's collection on Bitsavers but haven't found
> > any details that might discuss jumper settings or even better,
> > a schematic.
> >
> > Wondering if anyone would have a user manual or other detailed docs for
> > this board?
> >
> > M68MM01A2 -- has 6800 CPU, 6875 1.0 MHz clock generator, 6850 ACIA and
> > MC14411 baud rate clock, (4) EPROM/ROM sockets and (2) 6821 PIA sockets
> > with the 86-pin Exorciser edge connector.
> >
> > I'm interested in seeing if I can minimally modify it to have a similar
> > memory map to the Altair 680 so that the Altair's PROM monitor could
> > run on it.
> >
> > Thanks!
> >
> > Chris
> > --
> > Chris Elmquist
> >
> >

-- 
Chris Elmquist



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