test-drb

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101090 discussions

by deramp5113＠yahoo.com

Here?s a demo video of a Pertec 5.25? drive that has dual index sensors so you can simply flip a standard disk over and use both sides: https://www.youtube.com/watch?v=8UCcONLTsuQ&t=32s Mike

4 years, 2 months

DEQNA cab kit wiring

by g4ajq1＠gmail.com

Does anybody have a wiring diagram?? I have one with two broken wires! Or a photo of the BERG connector as long as the colour code is consistent :-) Thanks in advance, Nigel -- Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU Amateur Radio, the origin of the open-source concept! Skype: TILBURY2591 nw.johnson at ieee.org

4 years, 2 months

SQ703/6 conversion and a little fun

by g4ajq1＠gmail.com

A few months ago, thanks to help from several people here, I converted an SQ703 TMSCP controller to SQ706 MSCP. I had problems trying to use it on the vax due to the complexity of mapping Q-Bus registers under ODT, so put off trying until I got the LSI-11/73 going. Now I have a problem: It seems to run and recognise the controller as SQ706 according to the on-board diagnostics, however it insists saying it is at 777450, the TMSCP address.? Trying to change it gives me an out-of-bounds message. OK, I thought, I will just use it there. Put it in to a running RT11 system and it shows up at 772150 and clashes with an existing controller! It seems that one of the PALs is maybe setting up the address! Anybody else tried this? cheers, Nigel Here's the fun:? https://www(dot)bbc(dot)com/news/entertainment-arts-59089596 Maybe our vax computers will become popular once again! -- Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU Amateur Radio, the origin of the open-source concept! Skype: TILBURY2591 nw.johnson at ieee.org

4 years, 2 months

8" disk drive questions...

by cclist＠sydex.com

Just as a follow up, I grabbed one of the Memorex "flippies" out of my files: https://i.imgur.com/3VnrazS.jpg --Chuck

4 years, 2 months

Terminal Emulator for Android

by dj.taylor4＠comcast.net

I would like to use my tablet, Samsung Tab E model SM-T560NU, to connect to my VAX and Linux computers.? There seem to be a large number of 'Apps' out there.? What is a good one to use? The VAX doesn't have SSH only insecure TELNET.? Another can of worms, SSH on the Vax? Doug

4 years, 2 months

Mystery 1702A(?) EPROM Programmer

by deramp5113＠yahoo.com

It might be the Mikra-D MD-2040 1702 programmer. Similar to the MD-2044 on my website but a parallel data interface (e.g., manual switches and lights) instead of a serial RS-232 interface. The 2040 is briefly mentioned in the .pdf file here: https://deramp.com/downloads/eprom_p...kra-d/md-2044/ Mike

4 years, 2 months

Old Apple II game manuals and the Internet Archive

by nospam212-cctalk＠yahoo.com

While clear out storage spaces I have come across binders of photocopies of lots of old Apple II game manuals. I've checked online for those that have been scanned already and will toss those. Before I toss the rest which I haven't found online, I'd like to scan them and upload to the Internet Archive to save them. Most of these are one page with a few 2-4 pages. What I'm wondering about is the best way to upload them after scanning. Do each individually, which adds a lot of entries to my small upload page (which I suppose isn't a big deal) or zip them up and upload the one file and make sure the metadata is properly set to identify each manual in the zip. Or some other method? Suggestions? Thanks, David Williams www.trailingedge.com (http://www.trailingedge.com)

4 years, 2 months

SQ703/6 conversion and a little fun

by g4ajq1＠gmail.com

4 years, 2 months

8" disk drive questions...

by geneb＠deltasoft.com

I'm working with the developer of the Applesauce disk imaging tool in order to iron out some issues with 8" disk support. I'm using a Qumetrak 842 disk drive that's got support for both double and single-sided media. This means that it's equipped with two index hole sensors, slightly offset from one another. It's my understanding that single-sided media has the index hole in one spot on the jacket, and double-sided media has one in a slightly different location. The issue at hand is some NIB Dysan double-sided 8" media I have - the disks have index holes in the jacket in both locations. Is this typical, or do I have some weird "special" disks on my hands? The Applesauce author posits that the combination of the dual-sensor drive and the dual-hole media wouldn't typically find themselves together. Is this accurate? If it's not, how would a system contemporary with the media have handled the two index holes? Thanks! g. -- Proud owner of F-15C 80-0007 http://www.f15sim.com - The only one of its kind. http://www.diy-cockpits.org/coll - Go Collimated or Go Home. Some people collect things for a hobby. Geeks collect hobbies. ScarletDME - The red hot Data Management Environment A Multi-Value database for the masses, not the classes. http://scarlet.deltasoft.com - Get it _today_!

4 years, 2 months

ISO: GE Terminet 300 knowledge

by derschjo＠gmail.com

Hey all -- I picked up a GE Terminet 300 which appears to be mostly functional, but is in need of alignment -- it's printing fairly smudged garbage with a few recognizable characters intermixed. Character positioning (horizontal) seems to be fairly irregular, for the characters that print clearly. The unit has suffered some knocks in its life and it's clear the photocell board has come slightly loose, which I'm sure is not unrelated, so I'm studying the service docs to get a better idea what's going on. There's an alignment gauge which I could reproduce if I had any idea what it's specs are. The service docs are a bit vague and the photocell assembly is a bit difficult to see, buried beneath the print band on the left hand side. Anyone out there have any experience with these? Any wisdom to impart here? Also, anyone have any spare print fingers? My print band's missing one (a "9") and I suppose it wouldn't be a terrible idea to have a few extras just in case... Thanks, - Josh

4 years, 2 months

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