Computer speedometers

[William Donzelli]

> Has anyone done a similar thing with their vintage systems?  On the 8080,
> the M1 signal could be used; I'm not sure offhand about other processors.

Come to think of it, the SGI 4D/380 has an LED bar graph matrix on the
front panel to show performance for each of the 8 CPUs.

And how could I forget the Systems Industries cache controller used on my
school's old VAX-11/780 - it was connected to two Fujitsu Eagles, and had
a truely massive LED bargraph for hit rate.

What a completely useless, expensive, way cool feature...

William Donzelli
aw288 at osfn.org