From mboxrd@z Thu Jan 1 00:00:00 1970 From: lm@mcvoy.com (Larry McVoy) Date: Tue, 28 Mar 2017 11:19:15 -0700 Subject: [TUHS] Release of 8th, 9th and 10th Editions Unix In-Reply-To: References: <20170328174254.GZ20717@mcvoy.com> Message-ID: <20170328181915.GC20717@mcvoy.com> On Tue, Mar 28, 2017 at 02:02:06PM -0400, Brad Spencer wrote: > Larry McVoy writes: > > >> My understanding is that the 3/50 is indeed some sort of VME system, as > >> is the 4/110, with some address related oddities. But it has been a > >> very long time since I booted a 3/50 up... The 3/50 I have are in their > >> cases, I just opened them up for the pictures. > > > > Hmm, so the 4/110 being VME is for sure correct, I had one of those when > > I was at Sun. The 3/50, I just don't think it was VME. I believe they > > made a version that was a single VME board but so far as I know that was > > a different beast. I could be wrong, I googled a bit and couldn't figure > > it out. > > > > What I know for sure is, unlike a 4/110, you couldn't open up the case > > and shove more VME stuff in there. If the 3/50 was a VME board I'm not > > sure what the point was other than, perhaps, to reuse the same part in > > a small case. I can't see Andy doing that, he was super cost sensitive. > > > I think that the 3/50 was a "single board" VME system... and as you say > you really couldn't add anything to it. I will pull one out and get > some close up shots of the connectors and perhaps the answer can be > determined by physical inspection. I also looked at the config file for > NetBSD for the sun3 and it very much mentions vme all over the place, > but that may not have applied to the 3/50. Is it possible that just VME > connector was used for power and the like... but nothing else?? That actually rings a bell, could be. I think it was 3/110 that had the same case/bus as the 4/110. Less sure about that, I'm not sure I've ever used a 3/110. Got a lot of miles on a 4/110, did a ton of UFS work on that machine.