IBM something, what is it ?

On 12/10/2011 12:38 PM, Fred Jan Kraan wrote: Nothing to do with any network, but for controllers. I had mainframes that used them and have two of these myself. There is a controller in this model which talks to the microcode in the controller and allows you to change options as well as displaying diagnostic codes from the controller. I have not see it used with any of the comms controllers, but most of those have control panels that I have seen, such as the 3705, etc, and are more complex processors than would be programmed with this. Also 3174's have their own diskettes and controls, and program thru attached terminals. This device is early 80's and for sure on 3370's and 3380's technology when they were in use. I don't know if any of the earlier 3330's or 3350's would use this vintage of a programmer. The handheld control was in a later unit. I seem to recall one without that feature added, but not sure of when.