This is a weird question, but I just built a new booter and tried it out to
make sure it worked (it did) and that got me thinking that really I could
build what ever I wanted and have it "boot" into the VAX. That means one
could presumably load and execute a program that needed only the CPU, some
memory, and a working network interface to load a program. 

Has anyone written any sorts of tests/diagnostics for various cards? I've
got a few Memory cards that are questionable so I thought I could write a
walking ones and zeroes test, and of course there is the Sigma disk card
that I want to exercise with the MSCP protocol. 

--Chuck