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My friend Dominique in Belgium is repairing his Pertec 8840A 9-Track Tape Transport (Part of his Nixdorf 620 system). On a recent visit the week of Thanksgiving, the transport went from working flawlessly to quickly degrading. Symptoms were: * Rewind not stopping, tape not loading properly *...

My memory might be playing tricks on me, but I seem to remember back in the 2014-2016 era that Al Kossow was collaborating with some original Convergent/Unisys folks on building an emulator for CTOS that runs on all modern OS, and had actually gotten it working. But my Google and vcfed.org...

Would anyone here happen to have access to the original early 80s binary files to to run the vintage TSC Assembler? http://bit.ly/2rLsORe (warning, takes a bit of time to load) I'm looking for the vintage software that this document refers to: TSC Floating Point Package by Technical Systems...

If anyone is interested, I just published a few videos showing my testing of PlastiBands for QIC Tape Cartridge replacement. https://youtu.be/irOrR-ZYwjw and https://youtu.be/GVsYHLvCvZY As always, I welcome feedback, and hope this is of value to some here. A special thank you to...

Is anybody here able to help me identify the model of computer terminal that this is? Unfortunately, I don't have any better shots of it than this. And, no, it could never display graphics like that, I'm quite certain, or if it could, never that clearly. That image is superimposed there...

Sold on eBay: Convergent Technologies S/50 a.k.a. Unix PC, AT&T 3B1 Unix Workstation I'm just wondering if anybody here did (or knows who) bought this one. https://www.ebay.com/itm/192421214472 Even though these were all manufactured by Convergent Technologies, this one is actually BRANDED by...

Is anyone here able to identify the correct drive for this disk pack? I'm told that it is for an IBM 3330-compatible drive, but I would appreciate any opinions here on the matter. Thanks! -AJ http://QICreader.com

I'm just wondering if anyone here might have purchased this: http://www.ebay.com/itm/282462822861 I would be fascinated to see any updates on a restoration project for this machine. I searched "Entrex" here on this forum, but found only this older thread on what looks to be a same/model, but...

Interesting story (well maybe for some). For any of you who have followed my projects, here is some context: It is one and the same company who used both the Point 4 IRIS systems and the Convergent Technologies MightyFrame systems that I have spent the last 3 years reconstructing and...

For any of you who might think that watching a vintage OS install is fun, I've created this YouTube video showing a full in stall of this OS on a MightyFrame. https://youtu.be/aP8URJNSb_E Please forgive my rambling commentary throughout... Enjoy! -AJ

Does anyone here have experience using these types of preformated tapes, or others of the <greek alphabet>-mat formats? If anyone is interested, I've published my analysis on one of these blank cartridges here, and my previous experience with them...

It's been a while since I've discussed this here, and I've made a lot of progress in this area. We've been in regular contact with Bruce Ray, who is a true expert in the Data General and related systems. He has already helped us TREMENDOUSLY. http://NovasAreForever.org But other than Bruce...

In this post, http://en.allexperts.com/q/Unix-Linux-OS-1064/2015/8/fun-old-point-4.htm Larry Irwin and Tim Plummer discuss using a "Tri-Tail Switch". My Google searches provide only this post, and un-related junk. "But they were in trouble. Their old system's data had been mangled and it...

I see that some tape drives were able to locate and overwrite one single block at a time, and I'm curious about how these drives handle Read-After-Write "Block Error Management" (my phrase). I'm exploring how the Kennedy 6450 managed erroneous blocks on its read-after-write procedure, and...

I just read what I *think* is the IRIS Operating System R7 install for this Microtech system. Please see the details, as well as the binary download of the file, on my site at: http://bit.ly/1QjlWlu It appears to be one single file, 13.7Mb in size, taking up most of the 20Mb tape. I'm hoping...

WANTED: Any Point 4 hardware made from ~1979 to 1983. See pictures at http://bit.ly/1Zxqbg4 Also, any Microtech machine from the same era, which would bear some resemblance to the Point 4 mentioned above, however, unfortunately I don't have any pictures. For reference, I only have the logo...

I've recently bought this manual in eBay, and scanned it. Since there seems to be a lack of Point 4 and/or IRIS vintage manuals available, I thought I would make it available here. This is the entire 238-page manual, and it's 83Mb, so you may want to right-click and save as. Point-4 IRIS R8...

Does anyone here have a working DG Nova that they might be willing to try to run a file on? The first file on my backup tapes for the Microtech is this "Minicom Disk to Tape Backup Utility". I'm just wondering if it will even run on a DG Nova. The Microtech may have been similar enough to a...

Has anyone here ever heard of Dan Paymar? I'm meeting with him tomorrow here in Vegas, to discuss his history with and memory of Point 4. Because of my reconstruction of the Microtech, which probably used the Point 4 processor, I was doing a search on "Data General Nova" and "Point 4", and his...

I've mentioned in several previous threads about trying to read data written circa 1983 in 4-track format on DC300 & DC600 cartridges. I think I may have had a breakthrough here. Piggybacking onto my QIC-24 analysis a few months back, I believe I've found a match between the Kennedy 6450 Tape...