On 2020-07-29 19:08, Charles Dickman via cctalk wrote: > I came across an Allen-Bradley 1771-DMC4 Control Coprocessor. If you are > familiar with AB PLC's, it is a 1771-IO chassis module that could be a > "sidecar" for a PLC5 PLC or a standalone module.
Can't help you here, we made our own HW. > It runs some version of OS-9/68k on a 68340 processor. It has 4MB static > ram and a 10MB ethernet AUI connector. I hooked up a terminal and can get > to an OS-9 prompt. It has by default a 64k RAM disk that is empty. The best > I can gather is that there was an external IDE (AB 1771-PCB PCbridge) that > was used to create programs that were loaded onto the RAM disk. Once > configured it would run standalone. I was a big fan of OS-9 for years, and did many projects with it ... LOVED it ... Most (all?) OS-9 manuals you can find online. > Microware is still around in some form so OS-9 is not completely dead and I > did find some references to a Microware product called PBbridge. It would > be interesting to experiment with. It is actually not much more than a Procomm, or whatever Terminal software was used back then. It gave you access to your target, some commandlines, and download/upload features. > I am curious if anyone has any experience with this hardware, with the IDE > or OS-9/68k in general. I've never seen much discussion of OS-9/68k on > classicmp. OS-9 had many fans, when it came up on 6809. The 68k version, was more used around professionals ... Will definitely set it up again in my office, as soon as I get a decent DOSBOX again ...
