Flashing Light Indicators un Simple Front Panels - test-drb@ccmp.vtda.org

17 Dec 2001

...
  Actually, I think that's a good suggestion, if you
can find someone with
 the same ROMs.  In my experience, most programmers actually do use the same
 algorithm -- one of the common CRCs.  At least, all three programmers I
 regularly use do, and the checksums match the ones printed on SGI ROMs and
 a few other ROMs I have that have printed checksums. 
Well, they wouldn't compare exactly- the microcode ROM sets
are serialized...

But when I disconnecte the cabinet airflow sensor, I
get an error message displayed that's not in the
VCP's Z-80 boot ROM, but is only in the microcode
ROMs. Now, whether the Z-80 is retrieving and displaying
that message, or the microcode is getting loaded and
the Prime CPU is issuing the message, who can tell?

-dq