Looking for DEC M7264-CB Troubleshooting Documentation

Jon Elson elson at pico-systems.com
Thu May 9 12:30:56 CDT 2019

On 05/09/2019 11:57 AM, Mister PDP via cctalk wrote:
> Hello,
> As part of my H11A project, I am trying to debug my M7264-CB LSI-11 CPU
> module. When powered on, the CPU does not respond to the Run/Halt switch
> either on the front panel or via the console. I found engineering
> schematics for the M7264 online, but I was wondering if any in depth
> troubleshooting material existed online (Logic probe points, debugging
> steps, etc...).
Well, first thing to check is that the bus is properly 
terminated, and that memory requests are being properly 


More information about the cctalk mailing list