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New Item: HP Integral Personal Computer

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I am trying to avoid buying any old computer, but a friend of mine and I made an exception in this case and bought this together. Somebody in Prague offered a non-working HP Integral Personal Computer (1985) for $420. It was just 15 minutes of traveling from my friend’s home, so he visited the seller and told him that he would buy it if he could look into it, measure voltages and check for corrosion (either from caps or a leaked battery). The seller agreed. They briefly started the computer, but only horizontal bars were flashing on the screen. Then he disassembled the system, and everything was in pristine condition and all voltages were ok. After reassembling, he just paid and took it home.

When I visited the friend, he showed the computer. I asked him to start it so I could record a video of the error. To our surprise, the machine started directly into its HP-UX 5.0 UNIX system stored in ROM. Maybe the reseating of the internal boards helped it. Who knows. Anyway, we haven’t played with it more. I will first clean it and it is necessary to check capacitors in the power supply, repair the power button and check why the machine does the high-pitch sound when operating – it sounds like a hard drive which is not there.

I love how the machine looks like and it is even smaller than I expected. When carried, it is just as tall as my 1989 Toshiba T3200SX with a 386SX CPU, 3MB of RAM and a VGA gas-plasma display… and it is not much heavier. HP Integral Personal Computer is based on the Motorola 68000 CPU and has at least 512KB of RAM. In addition to the ROM storage containing the operating system, there is just a single internal floppy drive (720KB 3.5”). More storage devices can be connected using HP-IB though. I always wanted this machine. I even have a HP Journal magazine from 1985 with a very in-depth description of each internal component.

Tandy TRS-80 Model 100 batteries still alive

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Last summer, I put new set of alkaline batteries in this portable beauty as I needed it for a photoshoot. A few months later, I used the machine also during a vintage computer event and (both times) I forgot to remove them. The stand-by energy consumption is apparently so low that nine months, the computer still holds the data in its RAM disk.

SGI IrisVision – a $4,995 3D accelerator in 1990

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After years, I’ve finished a long in-depth write-up about an interesting piece of history – the SGI IrisVision 3D accelerator from 1990. It was a scaled-down version of the graphics board set from the SGI Personal IRIS and was intended for PC compatibles (16-bit AT bus) and PS/2 computers (MCA).

See the deep dive article here: https://retro.swarm.cz/sgi-irisvision-add-in-3d-accelerator-for-pc-1990/

The whole thing started when IBM licensed the graphics hardware and the IRIS GL 3D API for their IBM RS/6000 UNIX workstations. Although the IrisVision was not very successful (like all 3D accelerators of the era), it is cool that IRIS GL programs could run under DOS.

At the end of the article, there is a video showing the card in action in a high-end IBM PS/2 Model 70 with a 25-MHz Intel 386 and 387.

Iomega ZIP 100 drives

Thanks to friends of mine, I was able to get two working parallel-port ZIP drives from Iomega. My father used to use these during the 1990s as ZIP disks were popular in offices in Czech Republic. He later switched to an internal ZIP drive connected to IDE when his parallel-port external one died and used it for another 10 years.

I have a few systems where it is not possible to add a network controller so I though that this would be a good device for faster data transfers (compared to a null-modem cable or diskettes) or accessing data larger than the internal hard drives.

It works just fine. The only drawback is that you usually need a 486 system to leverage full speed of the external drive. My 386 laptops do not support the ECP/EPP protocols on the parallel port, so the access speed is significantly limited (150KB/s?). Anyway, it is still convenient enough for running DOS programs straight from the external drive. I am surprised how nice driver support Iomega provided for DOS and Windows 9x. There is even a “guest” driver in a form of a single exe file – just run it and you can immediately access the drive using a newly assigned drive letter.

Small portables: Libretto and PSION 5MX

These tiny machines were something I dreamed of during my childhood. I got my hands on a Toshiba Libretto much later. It was maybe 10 years ago when I needed to read diagnostic data from my old car (a Skoda Octavia I 1.6MPI with an automatic transmission – not having a manual transmission was considered heresy even back then in Czech Republic and I always enjoyed being weird). I friend of mine lent me the original diagnostic device together with this small laptop. I immediately fell in love with it. A few years after that I received another one from another friend of mine and I still use it as a bridge between new and old computers (thanks to its serial port and an PCMCIA SD-card reader).

The PSION Series 5MX is a different story. I had it (rebranded from Ericsson) and use it to make notes during my university years. I remember that I read the whole 500-page USB 2.0 specification on its (sometimes hard to read) display. I sold it after I switched to an HP Jornada handheld with Windows CE – it had shorter battery runtime but offered a better display and surprisingly better keyboard.

Although both are small devices, their target use case was always totally different. One was an exceptional device for taking quick notes, the other one was not so good for text input but offered ability to run full-blown PC software… and that was a big thing back then. If you want to better understand the internal architecture of the Toshiba Libretto 70CT, check the full article here on retro.swarm.cz.

Peugeot 106 Electrique (1995)

This little electric car was made in the mid-90s. It offered a 20-kW electric motor and 11-kWh NiCd battery that provided range about 80-100 km. This particular vehicle was recently upgraded with a 3-phase on-board AC charger (up to 12kW) and a BMW i3 Li-Ion battery offering 28 kWh of usable energy and range about 200-250 km per charge.

It is fascinating how much the technology evolved. Peugeot 106 had top speed just 90 km/h and although its motor offered up to 20 kW of power, you should not exceed 11 kW for a longer period. Otherwise you could damage the motor.

Drive mode selector is implemented the simplest way I’ve ever seen. There is no Parking or Neutral mode. You just have a button in the center console that switches between going forward and backward.

The 90s dashboard aesthetic

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A lovely dashboard in a battery-powered Peugeot 106 Electrique (1995). They made thousands of these in PSA.

Orange Gas-Plasma Screen In Action

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I am playing Vette! on a Toshiba T3200SX while waiting for sudden summer rain to go away.

A lot of the 80s stuff here: Chrysler LeBaron GTC Turbo Convertible (1988), Toshiba T3200SX (1989) and Vette! (1989)

Replacing HDD in Toshiba T3200SX

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There are not many laptops that can offer worse experience of replacing a hard drive. I got this T3200SX from a friend of mine and he gave me also a 120MB Conner hard drive. The machine itself had a working 40MB Conner drive, but I decided that it would be nice to have more disk space. I thought that it could take just a few minutes in a machine of this size… but I was wrong.

The hard drive replacement involves dismantling the lid, peeling off the LED board labels and removing the gas-plasma screen. Once you do all of this, you can finally remove the top cover and access the hard drive. The screws holding the drive are nicely hidden behind cables and connectors that block access to them. I think the whole process took me 30-40 minutes, but at least I was successful. This was even a bit worse that replacing a hard drive in a 12-inch iBook G4 (which is also very painful).

The already installed drive (in a different machine) could not boot. My T3200SX has an older BIOS version that does not know the 120MB drive. Thankfully, there is the ANYDRIVE utility, so I was able to install the BIOS overlay in the drive’s MBR and everything is working now (btw if you install ANYDRIVE on a drive that has only one partition that uses all the space on the drive, you can install the utility without losing the data, even though this is not mentioned in the README file).

My T3200SX has just 3MB of RAM (1MB on-board, 2x1MB in SIMMs). You might think that I can upgrade it easily with any standard SIMM, but that is not true. The machine is very picky, and it fires an “extended parity error” with every module I tried. So, although the computer has six standard memory slots, I must stick with 3MB of memory. The machine specs are: 16-MHz Intel 386SX, 3MB RAM, 120MB HDD, 640×480 gas-plasma display… the two ISA slots are empty and waiting for a network interface and a sound card.