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IBM PS/1 Type 2121 The ram chips on the motherboard are "83F0380" IBM chips. I assume... that they are standard PC RAM of some sort. Anybody know what sort? I'm trying to find a pinout for the ram chips I can tell you there's four of them onboard, and the onboard ram is 2MB. So that must mean...

I'm looking for schematics and specifications for the IBM PS/1 2011/2121. I have the 2121 but the monitor/power supply should be the same as the 2011. I believe it is the color monitor. It's been impossible finding much of anything about this computer so far. The power supply failed, and I'd...

I figure I'd share my experience, that it might help others trying to make sense of incomprehensible trouble in replacing their HDD with a CF card in older laptops. In short, if CF to IDE doesn't work, just order a IDE SSD. 1.8" works and fits as a direct replacement for a 2.5" IDE HDD. If this...

I'm working on restoring some old OmniBooks. I have a ROM 1.1 card, but would like to get a hold of the ROM 2.0 (or better) that came with the OmniBook 530. I have a 530, unfortunately the original owner lost (or kept) the ROM card. Internally, what kind of card is the PCMCIA ROM card? Is it...

I'm working on restoring an OmniBook 800CT. I intend for this to be my DOS/Windows 3.1/Windows 95 gaming machine. One of the first things I need to do is replace the hard drive (which is failing), with something solid state. The two options I'm aware of is either a CF card with an CF to IDE...