On 17 Mar 2007 at 20:15, info wrote: The background drives are probably 607's or 609's--the photo's too fuzzy for positive ID--but my money'd be on 607's which were far more common (I loved those drives and despised the 657 "cost reduced" replacements). Unfortunately, there are no mainframe cabinets anywhere in the photo-- what you see in the foreground are 3000-series controllers, but that doesn't mean a thing, as both the 3000 and 6000 series used 3000 peripherals for tape., card and printing. The 6000 used a 6681/2 channell converter, which then would interface to, say, a 3423 tape controller. The cabinet sitting next to the 415 card punch in the middle foreground is probably a 3447 punch controller. Maybe Billy Petit can recognize some of the cabinets--it's far too fuzzy to make out any numbers. Cheers, Chuck

On 17 Mar 2007 at 22:28, Richard wrote: I thought that was pretty clear from my statement. The one next to the 415 card punch is almost certainly a 3447 (which controls the card punch); the other cabinet *might* be something like a 3423 tape controller (there are several varieties of tape controllers, all looking the same, which vary in the number of channels and drives supported). Again, there is no positive ID of the system they were servicing, because that isn't visible on the photo--it could be anything from a 3100 to a 6700. Cheers, Chuck

I took a closer look at that CDC setup and the box on the viewer's right side appears to have a glass inset on the top, which would probably make it not a controller but a 501 line printer (an 800 lpm drum printer). The other cabinet on the left may also be a 501--this would not be an atypical setup of the time. Still doesn't answer the question of what the CPU is, but I don't think that can be answered, unless someone recognizes the room itself. Those 3000-series green glass enclosures were used for everything, it seems in retrospect. Cheers, Chuck