[cctalk] Re: Z80 vs other microprocessors of the time.

On Monday (04/22/2024 at 08:55PM -0700), Chuck Guzis wrote: I seem to remember (poorly) that it was very small diameter coax but I don't remember the termination method. I remember more about the Tek oscilloscope on a cart that we used than what we were actually doing. I don't recall that we actually cut and terminated any cables. We were just measuring the skew and writing it down and then I think a "professional" was going to come around later and actually adjust the line length. Entirely possible we were just doing busy work to stay out of trouble and not going to be part of the actual solution. But it was still educational. Close. I think 48 yrs. I first met PD Lincoln in 1976 when I moved into the Mounds View School district. Then I discovered his dad was doing some pretty cool stuff at work... I think they were working on the CY203 then too but there was still a Star on the floor which is what we "played" with. For those playing along, this was the CDC Arden Hills Operations (ARHOPS) in St. Paul, MN. The CDC Advanced Design Lab (ADL) was here and it's where all the supercomputing hardware development took place after Seymour left CDC. So, they did the Star-100, CY203, and CY205 there and then in 1983 spun the entire ADL off into what became ETA Systems and we did the LN2 cooled ETA10 there. Understood. It's all I know except for recently experiencing summer in Albuquerque so we might be 180 degrees (so to speak) out of phase on that :-) Chris -- Chris Elmquist