Hi all, I thought that you possibly could be interested in two projects, a small one that I did over a year ago and a more recent one, which is currently under active development. In order to become acquainted with the old UNIX sources as well as the behaviour of such a system running on old (but simulated) hardware I figured out how to feed Keith Bostic's original v7 tape images into Robert M. Supnik's PDP-11 simulator so that the original bootstrap procedure (described in "Setting Up Unix - Seventh Edition") could be carried out exactly as written. In addition to that I wrote a little program which traverses the root directory of the simulated disk and extracts its contents recursively (creating the same structure and files in the host's file system). I copied all the needed software and a HOWTO into a distribution package which can be found at http://telexx.mni.fh-giessen.de/PDP11-UNIX I did this little project as a "warm-up" for another and quite a bit bigger project: porting UNIX Seventh Edition to a modern RISC-like microprocessor (named ECO32). This processor and a few peripherals are simulated for now, but we intend to transform it into real hardware (we are thinking of an FPGA implementation). These of course are dreams of the future; what we have already is this: - an ECO32 simulator - an ECO32 back-end for the LCC compiler - an ECO32 assembler/linker/loader - a UNIX 7th Edition kernel ported to ECO32 We are working on a port of many of the commands; the standard library and the shell are ready and waiting to be integrated. The homepage of this project is http://telexx.mni.fh-giessen.de/ECO32 You are welcome to download the project in its current state; don't expect anything user friendly though ;-) If you have any questions regarding these two projects, feel free to ask. - Hellwig