Information Request: unidentified HP 9825T instructions - test-drb@ccmp.vtda.org

13 Feb 2017

I agree quite a unique bit of code

On Feb 13, 2017 4:07 PM, "Noel Chiappa" <jnc at mercury.lcs.mit.edu>
wrote:

...
  From: Tony Duell 
...
  My first thought, and it's probably wrong 
Apparently not... :-)

...
  these instrucitons (which differ by one bit, so might
be
 setting/reseting something) are NOPs to the CPU, but are interpretted
 by the memory mapping hardware 
Ooh, very clever/cool.

        Noel