Hi Well some of us still have RSX-11M (and RSTS/E) code floating around …..
Bob On May 4, 2014, at 12:30 PM, Jim Lux <jim...@earthlink.net> wrote: > On 5/4/14, 8:40 AM, Chris Albertson wrote: >> Looks like this is all you'd need for most timing projects. Just add your >> favorite OCXO and some wire. >> >> The SPARC (not Spark) is actually a step up from ARM. It was developed by >> Sun Microsystems (now Oracle) it is optimized for things like fast context >> switching, multi tasking and so on, all the things done by operating >> systems. The Sparc V8 does 128 bit floating point, (quad precision) I >> wonder if 200Kb RAM is enough to run an older version of SunOS? (a BSD >> variant.) > > Not all SPARC V8s have FPU: the SPARC spec has a lot of flexibilty in > implmentation: a lot of "if you want X, then it has to do the following > things in the following way, but it's optional" > > http://www.gaisler.com/index.php/products/processors/leon3 > > There's multiprocessor versions. Versions with and without cache, versions > with and without FPU, etc. > > If you want a POSIX compliant OS, then RTEMS will definitely fit in > 200kbytes. Don't know about all the other options. I've never heard of a > SunOS implementation on LEON, but there's a lot of weird stuff out there. > You do want to make sure that whatever you use is reasonably complete and of > a reasonably recent version (or at least one you're real familiar with). > > There are a fair number of "one-off" ports of some OS or another to the LEON, > but which don't have any continuing support, bug fixes, or users to > contribute. Imagine a grad student doing their thesis on "An implementation > of RSX-11M supervisor mode on the LEON3-MP"... they get enough done to > demonstrate that it works, and they graduate, and who has a bunch of RSX-11M > software anyway. > > > >> >> Are these shipping yet? >> >> > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.