skirted_in_SF wrote:In the early 80's I worked in Menlo Park (an area now infested with VCs and others that feed off of them) and every time the lights would blink one of us would have to trek over to the downstairs of the building next door and flip switches and turn knobs to reboot the Prime mini.
In the early 1980s, when I was just getting started in my career, I worked for a major timesharing concern (sadly now deceased) which used large-scale DEC computers (PDP-10s). When I hired on, a power-glitch was an all-hands-on-deck affair. This was before we installed a UPS that was capable of holding up two 5,000 square foot computer rooms and all the ancillary equipment until the locomotive-engine powered generator in the parking lot could spin up and hold the load.
The worst were the KL-10s; they'd crash with as little as a quarter-cycle glitch in the power -- which was usually to fast for any visual cue to be had. The KI-10s were better, and could usually survive a half-second or so on the capacitors in their analog power-supplies. The little -11s could ride out almost a full second.
The installation of the UPS solved all that mess, but caused problems for machines that weren't plugged into the output of it -- the thing threw huge amounts of electrical noise back onto the input feed which confused the daylights out of the KI in the lab ("my" KI!) to the point where I had to make an engineering change to it so its line clock would nominally resemble what the clocks on the wall did.
I dearly miss having a KI-10 as a personal computer. Those were heady days. It all went downhill from there.
I believe I've posted a shot of me with a KI-10 in Seattle here someplace. They are truly exquisite beasts.