A FASTBUS Logic Analyzer Based on SLAC Snoop Diagnostic Modules

A FASTBUS based data acquisition system is being developed at Fermi National Accelerator Laboratory for the Collider Detector. Due to the complexity of this system, some form of diagnostic module had to be developed to help find, in real time, hardware and software problems on any segment of this system. One such module, the SNOOP module, was developed at Stanford Linear Accelerator Center. It provides monitor and test capabilities to FASTBUS. To develop this FASTBUS Logic Analyzer, two SNOOP Modules will be interconnected to a host, and software is being written to use their monitoration capabilities. This system will have the capability of following, in real time, FASTBUS messages through the system. The hardware interconnection and various diagnostic features will be discussed, and performance will be given.