wrote: > > I believe PDP11 fails modern RISC tests because it uses a memory/ > > register architecture for most operations, and supports double memory > > operands as well. But I've also been surprised that no one has simply > > duplicated a PDP11-on-a-chip (not counting DEC themselves.) (I guess > > that 64k address space is a bit quaint these days...) >=20 > I think it was Fairchild who were making a PDP-on-a-chip - but I think it > used the PDP-8 architecture. AFAIK it never made it to market, although I > did see marketing literature.=20 http://en.wikipedia.org/wiki/Intersil_6100 (also Harris) AFAIK, no one did the PDP-11 except for DEC itself, with the LSI-11 (not really a single-chip processor) and the J-11. I understand that the TI MSP430 has a very PDP-11-like "feel" to it. -- Dave Tweed --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .