December 2024 - cctalk - classiccmp.org

From Punch Cards to Python Grace Hopper’s A-0 compiler paved the way for modern programming languages

by Christian Liendo

From Punch Cards to Python Grace Hopper’s A-0 compiler paved the way for modern programming languages https://spectrum.ieee.org/from-punch-cards-to-python

2 weeks, 6 days

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List problems

by Christian Corti

Basically, this message is just a test. The list server seems to be utterly buggy and broken at the moment. What is the reason? Christian

2 weeks, 6 days

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List problems

by Christian Corti

And worse, I do see some messages in the Mailman frontend, but I don't receive any email from the list server any more. Christian

2 weeks, 6 days

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Re: Seeking Remex RRS3300 Paper Tape Reader info

by David Wise

If anyone has info on this model, please reply or contact me. Thanks. I recorded video of my RRS3300 reading and winding. Since my initial post, I discovered that the machine needed even more civilizing, and I ended up reducing the reeler speed from 200IPS to 100IPS. Link here: https://www.youtube.com/watch?v=dmWAguLki6o . The spiral-wrapped cables at the top go to a microcontroller, which reads the sprocket-hole signal and retards the phase control ramp. [https://www.bing.com/th?id=OVP.qNKj3Byj-dGoXSwjoQbt0AHgFo&pid=Api]<https://www.youtube.com/watch?v=dmWAguLki6o> Remex RRS3300 Paper Tape Reader<https://www.youtube.com/watch?v=dmWAguLki6o> Demonstrating my Remex RRS3300 paper tape reader, made in 1970 with discrete/TTL/DTL technology. The 300cps reader section uses capstan drive and electromagnetic brake instead of a stepper and pinwheel. The spooler is permanent split capacitor AC induction motors, electromagnetic brakes, relays (mechanical and discrete solid-state ... www.youtube.com

3 weeks, 3 days

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QIC Archival

by Cameron Kelly

Hello, I have a QIC tape of an interesting piece of software that doesn’t seem to be archived anywhere. I don’t have experience using QIC tape so I’m inquiring if anyone here would be willing to offer the service. The software in question is “CorelDraw For Unix”. Thanks, Cameron

3 weeks, 3 days

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IEEE Spectrum: When IBM Built a War Room for Executives A new video captures a remarkable 1968 demo of IBM’s Executive Terminal

by Christian Liendo

As time goes on new things are found. When IBM Built a War Room for Executives A new video captures a remarkable 1968 demo of IBM’s Executive Terminal https://spectrum.ieee.org/ibm-demo

3 weeks, 3 days

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Re: Information on Trend UTR 700 Paper Tape Reader and Facit 4060 Punch

by Malcolm Clark

Hi Martin, I am looking for a manual for the above tape reader and found your details from a discussion on cctalk from July 2022. I am a volunteer at The National Museum of Computing and an ex Ferranti engineer. I am currently restoring an Argus 500 computer and trying to get it back to its original configuration. I have recently restored 2 Trend HSR 500 readers and now have acquired 2 UDR 700 readers that need to be fixed and set up. My latest video on YouTube https://youtu.be/8HtRqe6jzc8?si=MmRL4qbh_7PZjVff In the email you said you had scanned the document into a file. Would it be possible to upload it to Google Drive and send me the link so I can download it? Ultimately I would like to upload it to the Museum archive and make it available for everyone to view. I am assuming that there are no copyright issues as Trend was finally wound up as a company in December 2022. Hope to hear from you soon Kind Regards Malcolm Clark

3 weeks, 3 days

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Old mainframe humor

by Donald Whittemore

NEAT/3 instructions www.myimagecollection.com/webdocs/neat3.pdf Misc instructions www.myimagecollection.com/webdocs/pl-o.pdf Misc Assembler www.myimagecollection.com/webdocs/miscassembler.pdf IBM beginnings www.myimagecollection.com/webdocs/beginning.pdf New IBM OS www.myimagecollection.com/webdocs/newibmos.pdf

3 weeks, 5 days

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Re: VT-100 Text Windows library

by Henry Bent

If this were my project, I would start by getting newlib going and then seeing if I could use that to run an older (presumably more simple, with fewer requirements) version of screen. -Henry On Mon, Dec 9, 2024, 22:04 Mike Katz <bitwiz(a)12bitsbest.com> wrote: > Overlapping would be amazing, different screen quadrants at a minimum. I > am going to try to port Txwindows as that is the only package I could find > > On Dec 9, 2024 8:40 PM, Henry Bent <henry.r.bent(a)gmail.com> wrote: > > On Thu, 5 Dec 2024 at 20:26, Mike Katz via cctalk <cctalk(a)classiccmp.org> > wrote: > > Thank you. > > Screen is a linux utility. I am writing this on a bare metal (no > operating system) ESP32 dev board. > > Right now the program is text menu driven. I would like to enhance it > with textual windows. > > The Txwindows package is perfect but over kill and will need some > hacking to work in my environment and it doesn't support the VT-100's > region scrolling so screen updates might be slow. > > > What might be helpful is if you could be more specific about what it is > you're trying to achieve. Do you want arbitrarily sized, overlapping > windows or do you just want the screen divided up into discrete segments? > > -Henry > > >

3 weeks, 5 days

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Sequent RAM identification help

by Aaron Taylor

Hello, While cleaning my garage I ran across 100+ sticks of RAM that I can't identify. Does anyone recognize these? Are they of use to anyone? https://imgur.com/a/xUnBuEg Note that there are two types of RAM in the photos and they have different keying notches in the middle of the connector. One has a PCB copyright of 1997 and the other is 1999. Both are marked "Sequent Computer Systems", and are buffered, ECC, 256 MB, 50 ns, EDO RAM. Aaron

3 weeks, 6 days

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