On Sat, 23 Apr 2016, Robert Jarratt wrote: > > or > > from the OS (can't help how to do this from VMS; under Linux you could > > mmap(2) /dev/mem at the right address and then poke at it with a little > > program doing the right dance to get the flashbus access protocol right), > to > > see if it shows any symptoms of misbehaviour. > > > If necessary I should be able to install linux, but still, working out the > address doesn't seem trivial.
It's all in the manual. :) Check `pcdsatia.pdf' again -- Chapter 4 for overall details and Table 4-3 for flashbus device mappings in particular. The access dance including addresses to poke at is described right below the table. Yes, it's all pretty low level, but there you go! > Many thanks for all your help today! My pleasure! Maciej