> On Apr 11, 2018, at 5:48 PM, ben via cctalk <firstname.lastname@example.org> wrote: > > ... >>> and real text screen UNIX is not aviable anymore. >> Sure it is. > > I have a nice 18 bit cpu here, with only a few hardware bugs. > Hmm would it work better if I change that around ideas. > > Care to point to a nice 18 bit version of unix or C. > BTW The cpu has a frame pointer S but no S++ --S operations > so pushing and popping wild data is not a option.
I haven't tried pcc, but supposedly that has been ported to the PDP-10, so presumably it can be ported to an 18-bit machine too. You could try gcc; creating a simple back end is not all that hard. And while it makes no attempt to support non-multiple-of-8-bit machines, it can be forced to, after a fashion. One time for grins I banged together a very primitive CDC 6000 back end. It wasn't correct but it wasn't horribly wrong... 18 bit Unix, not sure about that one. It was originally done on a PDP-7 but I think that was before C and it's no longer around that I know of. Still, older versions might be somewhat portable. Does it have to be Unix? For a simple character environment, Forth is nice and it's very easy to port to pretty much any computer. paul