On 2015-09-05 18:20, Charles wrote:
  I got lucky with a little trial & error. Setting
the MSB of the SR (i.e.
 7000) causes AJRLIA to report an error but then keep testing.
 Not sure if this works for all the AJ**** diagnostics but hopefully DEC
 had some kind of pseudo-standard for this... 
Nit picking: The MSB would be 4000. :-)
But yes, DEC often did use similar bits for similar purposes in
different diagnostics, especially if they are for the same device. So
there is a fair chance that you'll get the same effect from other
diagnostics with the same switch register settings.
        Johnny
--
Johnny Billquist                  || "I'm on a bus
                                   ||  on a psychedelic trip
email: bqt at softjar.se             ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol