test-drb April 2018

test-drb@ccmp.vtda.org

128 participants
123 discussions

Blog in portuguese - are updates allowed/wanted?

by alexandre.tabajara＠gmail.com

Dear friends I have a blog in portuguese where I write my adventures in repairing and maintaining old computers. Today's post is: http://tabajara-labs.blogspot.com/2018/04/msx-yamaha-yis303yis503-e-seus-ir… Should I post updates to my blog here? Are these wanted/allowed? I believe yes to both Thanks Alexandre (and don't forget to click on the ads and share around :) ) (and check often the blog, there are tons of great info :D) (and google translate is your friend!) (and the groove is in the heart :D )

6 years, 2 months

Intel HEX formats

by dave＠661.org

I'm trying to understand various hex formats so I can add them as output options to minipro[1]. I went looking for existing code to convert binary to Intel hex and found repeated copies and references to "format83.c" by Erik Lindberg. It seems to do what I want, but I'm unclear what "Intel HEX 83 format" is supposed to mean. Based on what I see at http://www.math.purdue.edu/~wilker/misc/DEVEL/0036/A-6804/BIN2INT.C, this program only creates hex files in the I8HEX format, as described in https://en.wikipedia.org/wiki/Intel_HEX. Of course, I'm going to have to support the I16HEX and I32HEX formats too. Based on what I find in format83.c, this shouldn't be too much trouble, but I really want to know what "Intel HEX 83" is supposed to mean. [1] https://github.com/vdudouyt/minipro/ -- David Griffith dave at 661.org A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

6 years, 2 months

anyone in winnipeg looking for a 11

by tdk.knight＠gmail.com

i know of pdp 11 thats going to get lost to a building demolition in winnipeg if i was in the city i would jump up and down to grab it it my self ive got most of the paper tapes for it and the drawings i managed to rescue a while back.. theres a office on the otherside of the floor just about other side of the wall from the 11 that has more manuals and documents possibly 8" floppy disk software in said room (more like a closet 8x8 room there some vandle damage to the front of the 11 was painted with some spray paint and the spectrimanalizer its atached to was smashed also theres also a room with the big built in desk for a control room dating back to the 60's 70's been striped of some stuff if anyonres looking for that sorta stuff

6 years, 2 months

Picked up stuff from Pete's

by aperry＠snowmoose.com

For those follow the rescue of equipment from Pete Lancashire's place outside of Portland ... I went out there last Friday. Pete was unavailable, so a friend of his let me and showed me where to avoid stepping. The amount of stuff there was impressive/amazing/overwhelming. Aside >from the test equipment and old telecom equipment that was pointed out when I was shown around, it was hard to focus on one thing because I would immediately see something else interesting that grabbed my attention. I picked up seven Sun SPARC systems and three Compaq-branded Alpha systems. The Alpha systems all went to a local (Seattle) person who is talking to Bill Gunshannon about possibly getting one out to him. One of the Alphas was a DS20 deskside and I never figured out what the other two were. They were narrower and longer than the DS20. There were also some loose 72G Ultra3 SCSI HDDs. The Suns were a SS1, SS2, two SS5s (one with a Netra top cover), two SS20s (one with its cover removed and MBus card and memory lying near it) and a SS1+ "prototype". I am keeping the SS1+ and a SS5. I have found a home for a couple more of them and will be looking for a home for the rest. The SS20s are the most problematic. As you would expect from a system with its top cover missing, one of the SS20s does not display any diagnostic output or get to the OBP prompt after being powered on. The "good" one displays a "replace motherboard" message while going through its diagnostics. Also, as you might expect, the one called a prototype was the most interesting to me. I am a long-time Sun employee and, while I wasn't around when the SS1+ was developed, I know people who were. It isn't like any prototype that they knew of. Still trying to figure out exactly what it is. The top cover is metal and slides over the chassis (not plastic and pivots into place like a SS1+. There are no external markings on it. It has a Sun SS1+ motherboard, Sun0424 HDDs, and uses SS1/SS1+/SS2 HDD carriers, but has a Sony (not Sun) labeled power supply. As far as the 029 keypunch, it is still there. There was some confusion and the people who were supposed to come get it didn't. I have described to them where it is and how I would go about removing it. alan

6 years, 2 months

More retro than you might think: the LCD

by lproven＠gmail.com

Science The tech you're reading these words on ? you have two Dundee uni boffins to thank for that Spear and LeComber stumbled on the thin-film-transistor liquid-crystal display 40 years ago By Alistair Dabbs 25 Apr 2018 at 09:15 https://www.theregister.co.uk/2018/04/25/dundee_hidden_home_of_tft/ -- Liam Proven ? Profile: https://about.me/liamproven Email: lproven at cix.co.uk ? Google Mail/Hangouts/Plus: lproven at gmail.com Twitter/Facebook/Flickr: lproven ? Skype/LinkedIn: liamproven UK: +44 7939-087884 ? ?R (+ WhatsApp/Telegram/Signal): +420 702 829 053

6 years, 2 months

GDB front-end for SimH

by kylevowen＠gmail.com

Has anyone made a GDB front-end for SimH? Just curious. Seems like it could be an interesting way to tie an IDE to SimH, if one were inclined. Thanks, Kyle

6 years, 2 months

MDL is running in ITS

by lars＠nocrew.org

Hello, People have been earching for PDP-10 MDL for a long time. Finally, we found source code for TOPS-20 including slightly bit-rotted ITS support. It has now been fixed and is up and running in ITS. Twenex people are welcome to give it a go too. This is published with permission from Chris Reeve and Tim Anderson: http://github.com/PDP-10/muddle Next is, of course, trying to run Zork. How to do that is an entire research project of its own. Best regards, Lars Brinkhoff

6 years, 2 months

Amusing IBM test system model

by donald＠donaldwhittemore.com

Well, the ones listed now have been re-listed at least once. :-( I was just contacted by the Living Computers Museum. They emphasized they are a 501(c)(3) org. :-) I donate to the CHM. I will probably give them first shot.

6 years, 2 months

Cybernex APL-100 terminal

by turing＠shaw.ca

Does anyone in the group have access to documentation for the Cybernex APL-100 video terminal? All that I've been able to locate is a 4 page brochure for it; they were originally made in Ottawa, Ontario, Canada. Any help would be greatly appreciated.

6 years, 2 months

Digilog DLM III?

by w2hx＠w2hx.com

Hi friends. Looking for a user manual (or anything) for this data line monitor. Here is a picture: http://w2hx.com/x/Digilog/Digilog-DLM-III.jpg Thanks

6 years, 2 months

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test-drb April 2018