old control data drives

[Chuck Guzis]

One more category springs to mind--5xx would be printers (e.g. 501 and 
512).  Maybe I;m trying to forget about what it was like having a 
machine gun on one side (501 drum printer) and a screaming banshee (512 
train printer) on the other side.

8xx also includes drum storage.

I was never close to the Intercom/EI200 scene, so I talk to the RJE and 
comms stuff.  While I could stare at the IGS people fooling with their 
big radar-screen displays, I'm not terribly familiar with the graphics 
stuff either.

--Chuck