MARCH has (or once had) a lot of 3B2 hardware and documentation at InfoAge in NJ. Maybe Evan is reading this thread or you can ask him via midatlanticretro.org. I recall at least one complete system donated years ago.
On Fri, Aug 14, 2015 at 5:13 PM, Jerry Kemp <[email protected]> wrote: > Hello Seth, > > Thanks for the update. > > I wish I could assist further, but aside from shell scripting, I'm not a > developer, and aside from my "ATT System Administrator" classroom book, I > really don't have any additional documentation. > > That said, I will close with a thank you for your work on this and progress > you have made so far to date. I think that it is an exciting project, and > honestly, I really never expected to see a 3B2 emulator. I hope the items > provided by Al Kossow is what you need to move this project forward. > > Jerry Kemp > > > On 08/14/15 02:28 PM, Seth Morabito wrote: >> >> * On Tue, Aug 11, 2015 at 09:36:36AM -0500, Jerry Kemp <[email protected]> >> wrote: >>> >>> Hello Seth, >>> >>> We were having a 3B2 discussion on the Sun Rescue list, and that got >>> me to thinking about your emulator project. >>> >>> Can you share a status update? >> >> >> Hi Jerry, >> >> Sadly, it's been stalled for quite some time now. Current status is >> pretty much the same as it was in January. The simulator can boot the >> 3B2/400 firmware, pass diagnostics, and read directories from virtual >> floppy disks. Unfortunately, it can't get much beyond that -- trying >> to boot the UNIX kernel still fails miserably. >> >> I'd hoped to have much better progress to share, but Real Life >> intervened by throwing me several major curve-balls in the first half >> of this year, and it's only now that things are really starting to >> settle down. >> >> Even so, two things are still really holding me up: >> >> 1. Lack of good documentation for the system design of the 3B2 >> >> 2. Lack of access to a physical 3B2 >> >> I hope to get #2 sorted out soon(-ish), so I can run a 3B2 with a >> logic analyzer attached. There's still some mystery surrounding some >> system timers and interrupts that I need to figure out before I can >> really make progress. >> >> I'd still love to get #1 sorted out, too. There are some 3B2 internals >> docs on their way to Al Kossow that I hope will get scanned in the >> next few months, I think that would help greatly. >> >> Best Wishes, >> >> -Seth >> > -- Bill vintagecomputer.net
