On 04/11/2018 02:48 PM, ben via cctalk wrote:
  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. 
Well, the Univac 1100/2200 series mainframes ran V7 Unix--and they're
36-bit machines, so probably not far from your 18-bitter--and they're
ones' complement machines.
Univac called it "SX1100", so you have a search term.
--Chuck