John Honniball wrote:
>
> tim lindner wrote:
> > > I am interested in building a computer like this, but this seems a bit
> > > too much for me to tackle. Are there any other Classiccomputers one could
> > > build which are far simpler and don't involve 600 wires and stuff?
>
> I keep thinking about putting together a 6809-based machine, just
> for the fun of it.
>
> > http://home.netcom.com/~tlindner/Download/Free6809.zip
> >
> > I also converted the included postscript file into a PDF.
>
> Something like the CMU Free6809 board would be great, but I'd
> prefer to add a CRT coltroller to get a video display. I'd
> also want a keyboard interface so that the machine could
> be independent of a terminal. Maybe even a disk interface
> of some sort, and the AY-3-8910 sound chip, and a parallel
> port, and... Oh dear, now I'm making it too complicated!
>
> What do other people think about a small-scale 6809 board?
Any useful CPU board needs a DISK of some sort. 64kb is cheap now days.
Eprom/flash based field programble logic could handle a IDE drive and
OS/9 level 2 bank switching.
--
Ben Franchuk - Dawn * 12/24 bit cpu *
www.jetnet.ab.ca/users/bfranchuk/index.html
Received on Sun Mar 31 2002 - 11:44:15 BST