@GreenBoy:
" I think the demo would run in considerably less though (4 meg I think, but it's been so long since I read about the QNX 4.25 demo and then tried it...)"
no it was stated that the demo-disk required at least 8Megs to run BUT it didn't run with 8MB because it needed some space to decompress its files... I say that because I tried it on a 8MB 486DX2-66 and it didn't run... later it was upgraded to 16MB and it booted without problems. 10-12MB may have been enough, thought.
BTW I don't think we can see many 133Mhz DIMM modules of less than 128MB...
And Cyberstorm PPC owners usually have 128MB +16MB on the motherboard... more than enough to run current apps comfortably...