GEM had nothing to do with PDP-11's. It started out life on VMS (without the "Open"). -Steve PS: My wife was one of the Engineers on the GEM project. ________________________________ From: owner-hecnet at Update.UU.SE on behalf of Clem Cole Sent: Tue 1/15/2013 11:57 To: hecnet at update.uu.se Subject: Re: [HECnet] Benchmarks - WHETSTONE.C On Tue, Jan 15, 2013 at 11:50 AM, Johnny Billquist <bqt at softjar.se> wrote: The PDP-11 C compiler is a much later product than any of the stuff you talk about here. It's something DEC did in the 90s. Fair enough - long after I was paying much attention. Do you know if it was part of GEM? The GEM suite allowed N front ends, and Y back-ends. As for PL/1 on 16 bit machines - it was done, particularly with subset compilers. Again, I lost interest in it in the early 1980s. PL/C was Cornell's version and a number of things like Intel's PL/M for the 8080 appeared, Stanfords PL/360 etc, all show it possible, The question really was the desire and how far you wanted to go. Clem