Jos Dreesen wrote:
>
> John Honniball wrote:
> >
> >
> > 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!
> >
>
> My SWTP/c contains a third-party board called "the communicator" with a 6845
> CRTC. Complexity is low : 6845, 2K sram, character generator and around 10 TTL
> IC's. It produces a standard 80x25 output.
> The same board also contains a 6821 to interface to a parallel ouput keyboard.
> The floppy interface of the SWTPc is also rather simple.
>
> Jos Dreesen
The trouble is getting a display for it. Unless it does Monochrome or
vga output it is hard to find any monitors for anything older.
--
Ben Franchuk - Dawn * 12/24 bit cpu *
www.jetnet.ab.ca/users/bfranchuk/index.html
Received on Mon Apr 01 2002 - 11:32:57 BST