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 <unclefal...@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 > > > > > >
