Had this one set up a few years ago with an MSI K8N Neo2 Platinum, miss that card.

Acorn released BBC Micro with 2MHz 6502(while Apple II and C64 was only 1Mhz), Econet networking and built-in sound processor in 1981. Then in 1987, Acorn released the first RISC based PC Archimedes with the ARM processor. We really benefit today from the ARM processors. What an amazing company it was with so many innovations

Ok. The drives work perfectly. Now to diagnose the motherboard. I'm thinking it's one of the logic chips. They might be holding the line low that would probably explain the problem it not reading and the light staying on even if the cable is on the correct way. We will see. If anyone could give some insight on these computers and what could be the problem I'm all ears. My scope went kaput over the weekend so I'm waiting on a replacement

A few years ago, I got my hands on a Soviet mainframe control panel identical to the one once used at the infamous Russian Woodpecker site in the Chernobyl Exclusion Zone. The machine installed there was an ES-1060, an IBM System/370 architectural clone, initially installed in late 1985 to handle improved algorithms. However, it was never put into operation because of the Chernobyl disaster.

The panel I have is from an ES-4001 block/byte multiplexer channel controller (which, as far as I understand, has no direct IBM equivalent as a standalone device).

I started this project a few years ago but haven't made much progress, as I want to keep the restoration as authentic as possible. So I've spent a lot of time hunting down surviving documentation and acquiring the correct parts and components.

It's a bit of a long shot, as many things are still unclear. Maybe it'll end up being just a beautiful set of blinkenlights, maybe something more, but... here's Part 1!

Lots of branding on this one - Autodesk, Logitech, LogiCad... but the original tech hails from German aerospace. The puck can be nudged and twisted to control movement & rotation of 3D objects. Connects with Windows/Linux/UNIX systems via 9-pin serial. More info here.

I'm investigating a possible error in the IBM PCjr's I/O port address table, and I'm hoping someone with a working physical IBM PCjr would be willing to run a few short BASIC programs.

On page 2-29 of the IBM PCjr Technical Reference, the Intel 8253 timer is assigned I/O addresses 40H–47H. However, the table specifies 0 for address bit A2.

I suspect that 0 should actually be X (don't care).

If A2 is ignored, the timer's four registers should appear at two sets of addresses:

If A2 must be zero, only 40H–43H would access the timer.

The motherboard schematics suggest that A2 is ignored, but I'd like to verify this on real hardware.

Test 1: Scan the I/O ports

Please enter and run the following BASIC program:

10 FOR I=50 TO 75
20 IF I=64 THEN PRINT "What happens next?"
30 PRINT I,INP(I)
40 NEXT I

This program may cause the PCjr to appear to lock up. However, I suspect that it may actually finish executing and simply leave the keyboard unresponsive.

I'd particularly appreciate an exact record of what happens:

• What does the program print? Please describe the complete output, including the port numbers and values.
• Does the program reach port 75 and display the BASIC Ok prompt?
• Does the keyboard still accept input afterward?
• If the machine appears to freeze, at exactly what point does that happen?

Details of the results would be especially helpful.

Test 2: Read port 41H (decimal 65)

After a fresh reboot, run:

PRINT INP(65)

Record the value, then try entering another BASIC command. Does the keyboard still work?

Test 3: Read the suspected alias, 45H (decimal 69)

After another fresh reboot, run:

PRINT INP(69)

Again, record the value and check whether the keyboard still responds.

Test 4: Read both ports

After another fresh reboot, enter and run:

10 A=INP(65)
20 B=INP(69)
30 PRINT A,B

Record both values and check whether the keyboard remains functional.

Why might these programs affect the keyboard?

The PCjr's BIOS uses timer counter 1 to reconstruct serial keyboard data. Reading the counter an odd number of times may disturb its low-byte/high-byte read sequence, leaving the BIOS out of sync. The computer may continue executing instructions even though the keyboard no longer works.

In the MartyPC emulator, reading port 65 once causes the keyboard to stop responding, while reading port 69 returns 255 and leaves it working. This suggests the emulator may not implement the suspected address alias.

Important: These tests may leave the keyboard unresponsive and require a reset. Please don't run them with unsaved work. Start each test after a fresh reboot so earlier tests cannot affect the results.

If you can help, please mention which BASIC version you're using and whether your PCjr has an infrared or wired keyboard.

I'm particularly interested in whether 41H and 45H access the same timer register on an actual IBM PCjr.

Thanks!

Hi I came across a old work PC monitor and I wanted to see if there is some kind of converter for it so I could maybe use it on my modern PC.

Please and thank you

Learned acsii basic on this

A lot of 7 HP 2645A terminals in Edmonton.

I would love to, but can't store that many on my place.

This Diamond card features an excellent TI RAMDAC, also found on the Matrox Millennium. An underrated DOS gaming choice: not the fastest, but great compatibility and superb analog image quality. S3 later shifted its focus to the mainstream market.

Dear mac users , you are using old app with some emulator , and you regret to not have your app running on a moder machine , may be i can brought to you the solution

In the early 90s I wrote MAC•CAM Workshop, a HyperCard stack for playing

with cellular automata, in the spirit of Toffoli & Margolus's CAM-6. The

heavy lifting was done by two XFCNs in 68000 code: a little FORTH to write

the rules, and MACCAM, the machine that runs them on four bit planes.

The source code of those XFCNs is long gone. All that was left was the

68000 binary inside the stack.

So we read the machine code, rewrote both XFCNs in C, and compiled them to

WebAssembly. They now run inside HC, a free HyperCard clone for modern

macOS that I've been building (Intel and Apple Silicon). No native code is

ever loaded next to a stack: old externals live in a sandbox.

The rule was simple: the original is the judge. It runs in Basilisk II

right next to HC, and both have to give the same output. Some results:

- the stack runs without changing a single line of its scripts

- one of the demo cards computes Pythagorean triples ("Fermat") with a

FORTH word written as raw 68000 opcodes, poked in with "," – it still

works: 1.27 million emulated 68000 instructions, and the 225 numbers

match the original character for character

- the rule tables come out identical to the old ones

Video of the stack running in HC: https://labynet.fr/videos/maccam-stack.mp4

HC is open source (MIT): https://github.com/cleobuline/hc

Site: https://hc.labynet.fr

This went so well that I'm now offering to do the same for other people's

old Mac software – stacks, XCMDs, small 68000 apps:

https://code-rebirth.labynet.fr/en.html

Happy to answer any question about the 68000 side, the WebAssembly

sandbox, HyperCard internals, or any old applications

.

its a reach i figure but does anyone on here have the satellite speakers that came with boston acoustics speaker setups on vintage systems, including the stands? i got a BA635 setup but the satellite speakers are missing their stands and i would prefer to design them in CAD and 3d print but the dimensions are not available online. as far as im aware the stand design was shared across every satellite speaker at this time so if you have a different model with the same looking speakers/stands theyll probably work.

Never have done vintage restoration before. I bought a C64, Vic-20 and Mac Classic several years ago with the intent to. Finally getting around to it, starting with the Mac classic. My soldering skills are very rusty, and I was never good at SMD, but I got it torn down today and the logic board recapped. It was SOOO crusty and fiddly. But even if ugly, I think I got them all on there - even if not pretty. I have good continuity to the next spot on the circuit for each one anyway.

Analog board is next.

I got lucky and the battery never leaked but I think every cap did on both boards. Also has a full 4mb with the expansion card.

Hi peeps

I've been trying to map out my tech history so to speak. I found an old video of my room with my PC from 2001 and I am trying to id it. It's quite a beast of a tower! I don’t remember it being that big.

The only clues I have, mostly from memory... I went from a Packard Bell desktop (486 SX I think) in the early 90s to a Gateway Pentium of some sort mid-late 90s to a custom build at some point early 2000s. This could be the Gateway but I remember it having the big green cow patch badge so maybe not. 

I'm in the UK if that has any relevance.

Side note - I believe I had a Diamond NVIDIA RIva TNT in this machine. I remember buying it within a year of launch and putting it into my existing machine.

Bonus points for the printer,  monitor and speakers :). 2nd pic is a better quality photo of what must be the same monitor from ~2005 from a different angle.

Thank you! 1993-2005 is such a blind spot for me on what specific computers I had and it's all just vague memories. Any help would be hugely appreciated. 

If you want to write “new” software for your old LGP-30, try this:

GitHub - etherbrat/xasm_lgp30: An LGP-30 cross assembler written in Python

The cross assembler is written in Python. The pre-built executable in the dist subdirectory runs under Windows. You can rebuild from source for Linux. The docs subdirectory contains a pretty good manual, and the demo_programs subdirectory contains assembly code examples, of which the helloworld program showcases the cross assembler best.

You can convert the cross assembled binaries to LGP-30 tape format using this:

GitHub - etherbrat/hex2tape_lgp30: From XASM_LGP30 object file or LGP-30 drum image...

To complete this suite, there is also an LGP-30 simulator, also written in Python, complete with good documentation and some LGP-30 programs. But note that this program only runs under Windows:

GitHub - etherbrat/sim_lgp30: An LGP-30 simulator written in Python

RTFM for all further information. Enjoy!

I found this Emachines etower 266 in a garage for free along with a sony vaio a few months ago, its functional and has its original emachines windows 98 os image on the hdd. I haven't been able to find any information on this model at all, is it uncommon? for specs it has:

Cyrix 266 cpu

120 watt samsung psu

8gb ide hdd

96mb ram

3.5 floppy (working)

cdrom drive (not working)

Dusting off the world's first laptop. This Epson HX-20 is running a BASIC game from 2018 (written by EkriirkE). The LCD screen shows the final score and "GAME OVER, MAN!" while the built-in micro-printer has the code lines logged on the paper roll. Micro cassette drive is also installed.

Recently, I got a parallel to usb cable for printing from my Epson LQ 500 with my Windows 10 laptop, but it's been coming out like this, regardless of what I do. Anyone know how to fix this? I know it's printing in graphics mode, and when its just printing in text mode its fine.

I'm trying to track down a specific technical manual for Fujitsu's FACOM VP series, the vector supercomputers Fujitsu sold in the 1980s (the VP-100 and VP-200 and their successors).

The document is the FACOM VP System Programming Guide, Fujitsu document VP-P 8301-5, fifth edition, August 1984. It's cited by title and number in a 1985 survey of vector processing in Japan, so it definitely existed. What I'm ultimately after is documentation of the machine's vector instruction set: the published summaries give instruction counts (195 scalar plus 83 vector instructions on the original models) but no encodings or programming detail, and the programming guide is the document that would have carried it.

If you have a copy, a scan, a bookshelf of ex-Fujitsu documentation, or you worked at a university computing centre that ran a FACOM VP in the 80s, I'd be grateful for any lead at all: a holding, a shelf, a name for the archive that kept the set. Even a confirmed "we had it and it was discarded in year X" is useful, because this manual leaves almost no trace at all.

富士通のベクトル型スーパーコンピュータ FACOM VP シリーズの技術マニュアルを探しています。探しているのは『FACOM VP システム・プログラミング・ガイド』(資料番号 VP-P 8301-5、1984年8月、第5版)です。1985年の文献に引用されているため存在したことは確かですが、所蔵情報もスキャンも見つかりません。このマニュアルに記載されていたはずの、ベクトル命令セットの詳細(命令の符号化やプログラミング情報)を求めています。公開されている要約には命令数(初期モデルでスカラ命令195個、ベクトル命令83個)しか記されていません。お持ちの方、所蔵している図書館や資料館をご存知の方、1980年代に大学の計算センター等で FACOM VP を使っていた方がいらっしゃいましたら、どんな小さな情報でも教えていただけると幸いです。

我正在寻找一份特定的技术手册, 它属于富士通的 FACOM VP 系列, 即富士通在20世纪80年代销售的矢量超级计算机 (VP-100、VP-200 及其后继机型)。这份文件是《FACOM VP 系统编程指南》, 富士通资料编号 VP-P 8301-5, 第五版, 1984年8月。它在一篇1985年的日本矢量处理技术综述中被按标题和编号引用, 因此可以确定它确实存在过。我最终想找的是这台机器的矢量指令集文档: 已发表的摘要只给出了指令数量 (原始机型为195条标量指令加83条矢量指令), 却没有编码和编程细节, 而这份编程指南正是应当载有这些内容的文件。如果您拥有这份手册的原件或扫描件, 或保存有一批富士通旧文档, 或者您在80年代曾在运行 FACOM VP 的大学计算中心工作过, 任何线索我都非常感激: 馆藏信息、存放地点、保存这套资料的档案馆名称。哪怕是确认"我们当年有过, 已在某年销毁", 也同样有用, 因为这份手册几乎没有留下任何痕迹。

Я разыскиваю конкретное техническое руководство к серии FACOM VP компании Fujitsu, векторным суперкомпьютерам, которые Fujitsu продавала в 1980-е годы (VP-100, VP-200 и их преемники). Документ называется «FACOM VP System Programming Guide», номер документа Fujitsu VP-P 8301-5, пятое издание, август 1984 года. Он цитируется по названию и номеру в обзоре векторной обработки в Японии 1985 года, так что существовал он несомненно. В конечном счёте мне нужна документация по системе векторных команд этой машины: опубликованные сводки дают только количество команд (195 скалярных и 83 векторных у исходных моделей), но не кодировки и не детали программирования, а руководство по программированию как раз и было тем документом, где всё это содержалось. Если у вас есть экземпляр, скан, целая полка старой документации Fujitsu, или вы работали в университетском вычислительном центре, где в 80-е стоял FACOM VP, буду благодарен за любую зацепку: где хранится, на какой полке, в каком архиве остался комплект. Даже подтверждение «у нас он был и был списан в таком-то году» полезно, потому что от этого руководства почти не осталось следов.

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