360/50 microcode listing

[Chuck Guzis]

On 05/07/2015 11:56 AM, Robert Ferguson wrote:
> Is there a reliable estimate of the number of extant relatively complete and/or actually working System/360 machines? A registry, perhaps?
>
> I would find that to be a very interesting data point.

I'd be interested also, in that a simple 360 CPU is essentially useless. 
  You need at least a minimum collection of working peripherals to be 
able to do anything at all.

--Chuck