Hey, that's a perfectly swell Model 70. They can't all be 70-A21s with the i486 Power Platform upgrade. (Upgrade alone was $3,995 in late 1989, and the A70 to stick it in was nine grand. I'd totally love to get my paws on one of those. Or maybe a model P-70 or P-75 with the red plasma display.)It has a 386DX-20 and 6MB of RAM installed, which is certainly better than if I had picked a 16MHz machine with 1MB.
What was the model number? There's no chance it might have been something like a Cx486 upgrade chip, is there? I think IBM may have produced those with their own house brand on them. (Not to be confused with IBM's own "Blue Lightning" chips, which were conceptually similar but never came in a PGA format; Blue Lightning-based 386 upgrades came in the form of little boards with a QFP soldered to them.)...well, except for one that seems to have a silver metal cap with a IBM part number glued over the CPU. I have no idea what was going on with that one, it was the only one that didn't have a normal 386.
Making a reference disk is no big deal but replacing the CMOS chip might be...I'm hoping it's a DS1287 because then I can buy a replacement off eBay with a coin cell holder.
Sure did! I dug through stacks of them until I found one I was satisfied with...
I'm curious, whats this kemner?