Four, I expect: CPU, Memory, VAX Interface, Floppy Controller.
I have one in pieces floating around here somewhere. One of those puppies (probably the one I have) held our VAX hostage for DAYS while the service folks from the OEM (Intergraph) tried to figure out what was wrong - they kept blaming the console processor which was not the problem. Turned out to be a recently added power supply - which I had pointed out to them was something that changed, and something we could do without as a test. Sigh. On 8/6/2015 7:13 PM, Jon Elson wrote: > On 08/06/2015 04:01 PM, Jay Jaeger wrote: >> Until that console processor fails with no backups. I seem to recall >> having 4 or 5 "backups" (aka operators). ;) >> >> > Well, the idea is that the console or diagnostic processor is WAY > simpler than the mainframe CPU. So, if the console computer dies, you > can troubleshoot it and be sure it is running in just a few minutes, and > then get on to the real problem. > > The VAX 11/780 had an LSI-11 with a floppy controller and an interface > board to the VAX, so I think it was down to 3 boards or something. > > Jon >