PDP-11/93

On Wed, May 16, 2012 at 1:37 PM, Eric Smith <eric at brouhaha.com> wrote: I didn't recognize the QED993, so I googled it. Found this comment on the v-c forum... "The QED 993 is a Xlinix FPGA emulation of a PDP-11. It does not appear to be fully compatible with a J-11 processor. For example, it does not appear to have any FP11 instruction support, which is assumed to be present in a J-11. I haven't been able to get RSTS/E 10.1 or 2.11BSD to run on one I have so for me it is not as interesting as I had hoped." I would personally consider a PDP-11 implementation that could not run 2BSD to be seriously broken for my uses (yes I know about 2.9BSD vs 2.11BSD and Split I&D, etc - that's just about picking the correct PDP-11 type). I surely don't need an uber-fast PDP-11 to run RT-11. I got along fine with an 11/23 system for professional software dev for years - as long as the compiles take a handful of minutes or less, it's fast enough. I don't have anything faster/newer than an 11/53, but for what I do, it's enough. Mostly, I run RT-11 and a little 2BSD. -ethan