test-drb

test-drb@ccmp.vtda.org

101090 discussions

by cz＠alembic.crystel.com

This was a long day. Went over to the house and started working on getting the Perqs out of the basement. I've been moving smaller stuff to make room and it was time. First up was a Perq1 chassis that just had the big disk drive in it, side and rear panels. I figured it was lightest and after taking off the sides and top was able to lift it and carry it up steps. Still heavy and bulky, but it made room and a path to get to the second one. The second one was a mess but a lot heavier: It still had the card cage in it and I was not going to be able to lift. So I figured out how to take the sides, top, front, back, and bottom (pounds are made of ounces) and then spottted the screws that hold the card cage and power supply in the box. Bless the people at perq, those two screws out and you can lift the cage out the side of the box. The card cage without cards (took them out to lighten) was heavy but I got it up the steps. Then with a herculean amount of effort I managed to carry the rest of the box up, followed by the sides, top, front, back, and bottom plates. There are still two more Perqs down there. They have heavier front plates (I was able to take them off) with real shielding. They were different designs, so they were not Perq1s and they are not the same as each other. Question: Are there any pictures of other types of Perqs? Unfortunately they are still buried under old Sun gear and a Vaxserver of some sort. So I'll have to think about those, but they will need to come apart as well. Question: Do the card cages and stuff come off the later Perqs as well? Also got two different types of keyboards that say Perq, and a monitor that looks like a big fat white Vetrex and says Three Rivers. Question: What does a Perq mouse look like? At least this stuff will not be junked. I'll take pictures and such tomorrow and throw a tarp over everything tonight because I'm too tired to get it out of the truck. I swore off high-mass hobbies for a reason....

5 years, 2 months

Rod Coleman's personal history of founding, building & running SAGE

by boris＠summitclinic.com

Probably read about this machine in Byte back then but was programming PDP-11's. Was very disappointed in IBM PC as IMO was far inferior to PDP-11 which was was easier to interface to data acquisition hardware and had a much nicer instruction set. Ran into 68000 processor for first time in 1986 when my father bought a 512 K Mac and couldn't believe performance of this CPU compared to PDP-11 - 24 bit addressing! and inferior memory access to what Sage had. Also, found 68000 instruction set very similar to PDP-11 and had no trouble writing assembly code for it a few years later and also really liked Apple's debug switch which was best implementation of a debugging system I've thus far run into. Weird that Rod Coleman had 68000 instruction set associated with IBM 370 whereas to me it was very PDP-11 like and 24 bit addressing was a very nice feature (that was one similarity to IBM 360) Other interesting aspect to SAGE history was the influence of September 1966 issue of Scientific American computer issue on Rod Coleman and lots of other people I've talked to. Was so glad that had this issue to read in 1966 and spent most of my time in boring school classes designing logic circuits and then building them at home using discrete DTL logic with parts salvaged from surplus IBM boards. Thanks for the link as didn't realize 68000 was used for home systems before I ran into Mac. >This may be old news -- it was new to me, though. > >https://suddendisruption.blogspot.com/search/label/Booting%20Sage%20Computer > >I'm not really familiar with SAGE machines. They were not as >well-known in the UK, I think, being upmarket from the Apple ][ and >IBM PC, both of which were eye-wateringly expensive by UK standards of >the time. > >Also, they were terminal-based things and even back then I was >interested in boxes with graphics. :-) > >-- >Liam Proven ? Profile: https://about.me/liamproven >Email: lproven at cix.co.uk ? gMail/gTalk/gHangouts: lproven at gmail.com >Twitter/Facebook/LinkedIn/Flickr: lproven ? Skype: liamproven >UK: +44 7939-087884 ? ??R (+ WhatsApp/Telegram/Signal): +420 7002 829 053

5 years, 2 months

Winsystems SAT-V40

by doc＠vaxen.net

I know this is a long shot, but I'm asking anyhow. I'm looking for the Ops Manual for a Winsystems single-board system. Model: SAT-V40 P/N: 400-0186-000 The SAT-V41 model is essentially the same board, so I'd settle for docs for that. There are references (from 2012) to SAT-V41.PDF, so I know it at least *did* exist in digital form. If anyone in the US has the paper manual I would happily scan it, and pay postage both ways. Thanks! Doc

5 years, 2 months

TRS-80 Trash Talk Live is Tonight at 9pm EST

by pete＠pski.net

Come join us on Zoom tonight at 9pm EST for our annual end of year show as we engage in a TRS-80 community retrospective of 2020 and talk about where we want to see the community go in 2021. Email for Zoom details: trs80trashtalk at gmail.com <mailto:trs80trashtalk at gmail.com> Or you can watch on our YouTube channel: https://www.youtube.com/channel/UCXkGugvdCkpkMDylVQb9gfg <https://www.youtube.com/channel/UCXkGugvdCkpkMDylVQb9gfg> But, it?s much more fun interacting on Zoom, so join us! You don?t have to be a TRS-80 enthusiast to join. Later, Pete

5 years, 2 months

dp8340n IBM 3270 protocol transmitter encoder

by wh.sudbrink＠verizon.net

Hi, In cleaning up my lab and stores, I have discovered that I have a tube of 10 of these chips. I'm not quite sure what they are for or were used in (or even where I got them). Anyway, if they are, in fact, for managing 3270 mainframe terminal traffic, they're probably not of much use to me. I've also noticed that I'm getting very low in vintage 4000 series CMOS chips. Anybody want to trade? Bill S. -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

5 years, 2 months

MM11-F manual/prints available

by jnc＠mercury.lcs.mit.edu

I finally got around to completing the processing of the scanned images of the pages of the MM11-F manual and engineering drawings. A PDF is available here: http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/dload/DEC-11-HMFA-D_MM11-F_Manual.… http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/dload/DEC-11-HMFA-D_MM11-F_Drawing… For those who object to PDF/A, here: http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/dload/MM11-F_Manual.tar http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/dload/MM11-F_Drawings.tar are TARs of the original TIFFs. The images aren't that great, I see; the original paper copies aren't too hot, IIRC. If anyone actually has a use for these (does anyone out there _actually have_ an MM11-F?), and there's a problem, let me know, and once I get my scanner running again, I can try and get better ones. I thought we were missing the MM11-E manual, so since the two are so similar (most of the boards are the same) I thought the MM11-F's would mostly fill the gap, but it appears it's there, prepended to the MM11-E prints. One thing this set has which might be useful is the backplane wirelist (the MM11-E's seems to be missing); given the commonality of most of the boards >from the MM11-E to the MM11-F, they're probably very similar. Noel

5 years, 2 months

terminals-wiki?

by dfnr2＠yahoo.com

The terminals wiki (https://terminals-wiki.org) seems to have been down for several months.? I hope the maintainer is OK. Does anyone know if this site is gone for good??? Is there a mirror anywhere?? The wayback machine has a few pages, but mostly serves to capture the look&feel. Dave

5 years, 2 months

Seeking: TMS32010 Assembly Language Programmer's Guide (1983)

by pbirkel＠gmail.com

All; I seek a copy (hard or electronic) of the "TMS32010 Assembly Language Programmer's Guide" (1983). Paperback : 194 pages ISBN-10 : 0904047423 ISBN-13 : 978-0904047424 Publisher : Texas Instruments (December 1, 1983) Item Weight : 1.11 pounds Language: : English The "TMS32010 User's Guide" (1985) is readily available. Not so the (more important!) Programmer's Guide :-{. I recently obtained a TMS 32010 Evaluation Module (EVM). So I'm motivated to "learn something" about the details of programming the TMS 32010. My first hands-on foray into the (early) world of DSP :-}. I've searched all of the nooks-n-crannies of the web to no avail. All help in locating/obtaining a copy of this document will be greatly appreciated. I do have a copy of "Digital Signal Processing Using TMS32010" (Douglas L. Jones) on order as a stop-gap measure. Thank you, paul

5 years, 2 months

PDP-11/70 backplane wire list

by derschjo＠gmail.com

Hey all -- Discovered a broken wirewrap wire on the 11/70 I'm slowly working on, it's on the last slot (44), and runs from BD2 to ??. White wire, part of a white/black twisted pair. I've been looking but haven't found a wire list for the backplane -- anyone have any leads, or, alternately, does anyone have ready access to an 11/70 backplane to trace where the wire from BD2 on slot 44 goes to? (Fortunately it looks like there's just the one wire on that pin, though there might be one "below" it on the pin that I can't quite see, rather cramped in there.) Thanks as always, Josh

5 years, 2 months

Emails going to spam folder in gmail

by billdegnan＠gmail.com

Hi, I have noticed the same email addresses' messages routinely end up in the spam folder of gmail. It's no big deal for me to check my spam folder but it's an extra step and messages can be lost. For those of you who run your own mail servers please consider updating your DNS / authentication to match gmail standards. It's not about making a filter or marking messages as "not spam". It's about how the sending mail server communicates with gmail and the "newer" mail server gateway protocols, etc. so that it's not necessary to make a filter in the first place.' There are a lot of how-to's on the web, each mail server is different and there is no simple fix that applies to all. Bill

5 years, 2 months

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