Hi all -- We've wanted to run TSS/8 on one of our PDP-8 systems at LCM+L for a long time now, and while we contemplated either (a) restoring our RF08 or (b) building an RF08 emulator, I decided it might be fun to investigate a third option: (c) modify TSS/8 to run off hardware we already have running, namely an RK05 drive. And it /was/ fun! And seems to have been successful, as we now have TSS/8 running on our PDP-8/e. Performance is acceptable, and it seems to be stable so far. The changes I made are here: https://github.com/livingcomputermuseum/cpus-pdp8 This is a fork of a codebase that Brad Parker put together a number of years back in which he did some serious work to get TSS/8 to build (amongst other things). I made use of this effort, which saved a lot of time and made building/testing my changes quite straightforward. I also modified the disk image: It's extended to 1MW (the maximum possible without modifying the filesystem code) and I ported a couple of extra programs to TSS/8 (CHEKMO and LISP). I figured some people here might also be able to take advantage of being able to run TSS/8 from RK05. I know RK8E's are pretty rare, but I'm also guessing more people have them than have working fixed-head disks :). If you do give it a try, let me know if you run into any issues or if you have any feature requests. Thanks, Josh

Josh, THANK YOU (!) for the conversion of TSS from RF08 to RK05! I have a PDP-8/E with and RK05 and it will be fun to get TSS/8 running again.

I had TSS/8 running years ago - on my PDP-12 and RF08 (w/2-disks!). Unfortunately, I donated both to the CHM in the mid-90's - and they've been sitting in their archives ever since :( Cheers, Lyle -- On Mon, 25 Nov 2019 22:03:47 -0800 Josh Dersch via cctalk <cctalk at classiccmp.org> wrote: third TSS/8 (amongst possible have -- 73 NM6Y Bickley Consulting West Inc. https://bickleywest.com "Black holes are where God is dividing by zero"