M8192 KDJ11-A ZKDJB2 XXDP Test Failure

tony duell ard at p850ug1.demon.co.uk
Mon Sep 14 13:37:22 CDT 2015

> That would be my first interpretation too: that it is a directive
> addressed to someone putatively running the test.  It _might_ mean that
> the test also tests to ensure that the jumper is installed.

There is another interpretation that I have just realised. If this is the right one
then whoever wrote that documentation need a dose of the clue-by-four!

But here it is : 

In order to completely test the CPU logic with this diagnostic, the 'halt trap option'
must be disabled. To do this, fit jumper W9.

If the 'halt trap option' is enabled then there are some faults that the diagnostic can't
find, Therefore if W9 is not fitted a CPU module with a fault may pass the diagnostic

But that would be a very unnatural way for me to understand it, and I would think whoever
wrote something with that meaning was being deliberately confusing.


More information about the cctalk mailing list