Re: stuff for sale - recent move
> > On Sun, 1 Mar 2020 at 17:58, Joseph Zatarski via cctalk > wrote: > > > > I've started inventorying a lot of the stuff I'd like to pass on here: > > > https://docs.google.com/spreadsheets/d/19vhF-o6vx9g7l-D8cvLJ5OPJzpdmU9PTTknbxY-mY58/edit?usp=sharing > > I can't see these in the Google sheet, for some reason: > > > -Mac network cards (nubus and one for IIsi or SE/30) as well as a couple > > other accessories (Dayna Mini Etherprint, AAUI transceiver, more > > accessories to come) > > I am interested in an SE/30 NIC and associated bits (transciever, > AppleTalk bridge). > > I am happy to pay international postage. I'm in Prague. > -- > Liam Proven ? Profile: https://about.me/liamproven > Email: lpro...@cix.co.uk ? gMail/gTalk/gHangouts: lpro...@gmail.com > Twitter/Facebook/LinkedIn/Flickr: lproven ? Skype: liamproven > UK: +44 7939-087884 ? ?R (+ WhatsApp/Telegram/Signal): +420 702 829 053 Hello Liam, The NICs I have are Asante brand. They are located in the Apple/Macintosh category. https://docs.google.com/spreadsheets/d/19vhF-o6vx9g7l-D8cvLJ5OPJzpdmU9PTTknbxY-mY58/edit#gid=1065383164=B3 Unfortunately for you, sale is pending on the SE/30 NIC. If the sale falls through, you are in line behind one other person. I'm fairly confident that even if the first buyer falls through, the second in line will not. If you're still interested in the other accessories, I can have a look when I get home, get a few pictures put up for you, and we can continue from there. International shipping should not be an issue, filling out a customs form is not very hard. Best Regards, Joe Zatarski
vaxstation ii machine check & diags efficacy
> It's a VAXstation II/GPX. I'm trying to install VMS 5.5 (from CD if it matters; there is a CMD CQD-200 or -220 as the only storage controller) and routinely getting machine check exceptions. > > Standalone backup always boots. Sometimes I get an exception the moment I hit on a restore; sometimes in the middle of the restore, sometimes it runs to successful completion. > > VMS never boots. Sometimes I get as far as the date prompt (I took out the battery), sometimes it gets a little farther, frequently it's before anything appears on the console at all. > > The exceptions booting VMS occur the same if I attach another disk with VMS 5.5 already installed; if I replace the KA630 and M7609 with a KA655 and M7622, it all seems to run fine. > > The KA630 power-on diagnostics all pass, but... it smells like a memory fault to me. What are the odds there could be a memory fault that isn't caught by the diags? > > ok > bear. > > -- > until further notice Well, if the KA630 diagnostics are anything like the KA650 diagnostics, the power on self test is not too thorough as I learned. I found 10 bad DRAMs on a KA650, the POST only found 2 of them. The rest I had to test by running tests from the monitor with tighter parameters. You should get into the console monitor on the KA630 and see if you can get a list of tests to be run with the TEST command. Sometimes they have parameters, and you can specify more thorough tests to be run. Keep in mind, they may take considerably longer to run than the POST does. I'm speaking from KA650 experience here, but I was able to run the MEM_Data test on all of memory with an address increment of 1. It took about 4 or 5 hours to complete I think, for 8MB of RAM.
Re: DEC KA650 VAX memory troubleshooting (video)
OK, so where should a thing like this go: https://pastebin.com/taQwaTV6 Anybody got a decent place to upload that? it's my notes on the MS650-AA, and more generally the KA650 CMCTL memory subsystem. Includes my theory of operation of the CMCTL, the organization of memory, the ECC equations (kinda, the info is there to derive them), explanations of the signals on the memory bus, and most importantly, a list of which bits and RAM regions correspond to the 312 DRAMs on the board. On Sat, Jun 15, 2019 at 8:33 PM Joe Zatarski wrote: > > Hey Everyone, > > I just thought I'd share a video of how I'm going about troubleshooting the bad DRAMs on my MS650 memory board. > > https://youtu.be/eDMhdAEFEgc > > I apologize for the shaky-cam, I don't have a tripod, and I needed to do a lot of panning anyway. > > I will be sharing my notes on the MS650 once I have a chance to write them up properly as well. I wasn't able to find a printset for the RAM card itself, so I assume one doesn't exist in digital form yet. I have documented what bit and memory range each DRAM on the card corresponds to, which may help someone troubleshooting in the future > > Regards, > Joe Zatarski
Missing posts in archive and no Subject: line
> So, a couple of posts yesterday did not show up in the date archive: > > http://www.classiccmp.org/pipermail/cctalk/2019-June/date.html > > which is how I read the list. They are: > > Software for Fairy YL-23 IC tester wanted > http://www.classiccmp.org/pipermail/cctalk/2019-June/048094.html > http://www.classiccmp.org/pipermail/cctalk/2019-June/048096.html > > DEC KA650 VAX memory troubleshooting (video) > http://www.classiccmp.org/pipermail/cctalk/2019-June/048095.html > http://www.classiccmp.org/pipermail/cctalk/2019-June/048097.html > > I'm not sure what happened, but I note the next post had no Subject: line, > and I'm wondering if that caused it. So best to make sure your posts have > Subject: lines. > > Noel This is a function of the way the two lists work, I think. The posts you mentioned were sent to cctech. As I understand it, that list is moderated to ensure it stays on topic. After they've been approved, they will make it onto cctalk as well. This causes a delay, and sometimes posts don't make it into the archive list until they are hours old. You'll notice these posts are now in both archives. The post with no subject had nothing to do with it, that's just a red herring. This is the behavior of the mailing list for as long as I remember, though I've only been on here a few years.
Re: DEC KA650 VAX memory troubleshooting (video)
sorry, the technical manual actually, which has an architecture *chapter* http://www.bitsavers.org/pdf/dec/vax/650/ The idea, eventually, is that I will publish my notes so that you wouldn't need the logic analyzer, at least for the 8MB board. I just had it hooked up, so I demoed it. The notes will include a mapping of bits and adresses to ICs so that you can narrow down which chip from just the ROM monitor. I don't have a 16MB board, but somebody could honestly probably figure out the mapping with a logic probe if they had to, just probe /cas while writing various test addresses, then check the data line while writing various test patterns. I also came up with some data that produces useful ECC bits, like all 1s, all 0s, one bit set only, and one bit clear only. That will also be in the notes when I write it up. On Sun, Jun 16, 2019, 3:25 AM Rob Jarratt wrote: > That is really interesting, sadly I don't have quite as much gear as you, > I only have a basic logic analyser, but I am not currently trying to fix a > MS650 memory board. You mentioned a KA650 architecture manual and you had a > PDF of it in the video. I couldn't find it on Manx? Where can I find it? > > Thanks > > Rob > > > -Original Message- > > From: cctech On Behalf Of Joe Zatarski > via > > cctech > > Sent: 16 June 2019 02:33 > > To: cct...@classiccmp.org > > Subject: DEC KA650 VAX memory troubleshooting (video) > > > > Hey Everyone, > > > > I just thought I'd share a video of how I'm going about troubleshooting > the > > bad DRAMs on my MS650 memory board. > > > > https://youtu.be/eDMhdAEFEgc > > > > I apologize for the shaky-cam, I don't have a tripod, and I needed to do > a lot > > of panning anyway. > > > > I will be sharing my notes on the MS650 once I have a chance to write > them > > up properly as well. I wasn't able to find a printset for the RAM card > itself, so I > > assume one doesn't exist in digital form yet. I have documented what bit > and > > memory range each DRAM on the card corresponds to, which may help > > someone troubleshooting in the future > > > > Regards, > > Joe Zatarski > >
DEC KA650 VAX memory troubleshooting (video)
Hey Everyone, I just thought I'd share a video of how I'm going about troubleshooting the bad DRAMs on my MS650 memory board. https://youtu.be/eDMhdAEFEgc I apologize for the shaky-cam, I don't have a tripod, and I needed to do a lot of panning anyway. I will be sharing my notes on the MS650 once I have a chance to write them up properly as well. I wasn't able to find a printset for the RAM card itself, so I assume one doesn't exist in digital form yet. I have documented what bit and memory range each DRAM on the card corresponds to, which may help someone troubleshooting in the future Regards, Joe Zatarski
