Hello, all: I'm working (long-term) on a project to bring back to life the V6+ Unix system (it wasn't vanilla V6 - it looks like it had some PWB stuff added) that was used on a number of machines at the Laboratory for Computer Science at MIT in the late 70s - early 80s. As part of that, I've been playing with bringing up V6 on a PDP11 simulator, and have written some stuff that would probably be useful to anyone who's interested in bringing up Unix on a PDP-11 simulator. I used the Ersatz-11 simulator from D-Bit (for no particularly good reason, except it runs under Windoze, and the "FAQ on the Unix Archive and Unix on the PDP-11" page said it was the fastest). I have been very pleased with this simulator; it is indeed fast (my simulated 11/70 runs at about 100 MIPS on a relatively elderly Athlon, which is about 30 times as fast as a real one used to :-), and it has lots of nice features (e.g. you can TELNET in to a terminal port on the simulated PDP-11). It also has this nice virtual device that allows a program running on the simulated PDP-11 i) access to files in the Windows file system, and ii) to issue commands to the emulator. I have written a V6 driver for it (should be fairly easy to adapt to V7 or later), and a suite of Unix commands to grab a file off the Windows file system (both binary and text mode), and issue various commands to the simulator. Finally, I have a number of Windows commands to do various useful things, such as read a file off a simulated Unix V6 file system (hosted in a Windows file), including ports of a number of Unix commands (e.g. ncheck, nm, etc); I don't detail them all here as I don't want this email to get too long (and boring). I'm not sure if anyone's interested in any of this; if so, I can send in more info (or whip up a Web page, whichever would be better). I also ran into a number of pitfalls on the way to getting V6 running, using RK05 disk images from the TUHS archive, and I can do a short writeup on 'How to bring up V6 under Ersatz-11' if anyone's interested. Noel