Looking for documentation for VAX-11/730 ENKCC Diagnostic
cube1 at charter.net
Tue Nov 12 10:40:46 CST 2019
According to the Fiche I have for ENKCC version 1.2 (Diagnostic Listing)
dated September 1982 - VAX 11/730 MCT MICRO
Test 33: Moving Inversion Test on Array (M8728 ARRAY or M8391 MCT Module)
"Moving Inversion failed on descending path with background of 0's Bit
being toggled is either bit 0 or bit 1"
"If a failure occurs the address being accessed will be in LS 9 and can
be examined via EX LS 9. The bit being toggled at the maxiumum rate
will be in WR 3 and can be examined by typing EX WR 3. OTHER data is
not used so as to insure that the test runs as fast as possible."
On 11/9/2019 2:41 PM, Josh Dersch via cctalk wrote:
> Hi all --
> The VAX-11/730 we have running here at the museum has developed a fault
> that occurs only sporadically, usually days apart. Running the complete
> diagnostic suite for the better part of a week reveals this:
> SECT TST ERR EXP REC OTHER MSK MODULE
> ENKCC 33 08 000000FF 000000DF N/A FFFFFF00 M8391 M8728
> Re-running only ENKCC, this error is repeatable (though it still takes a
> couple of days for it to occur). It helpfully points out the MCT (M8391)
> and memory boards (M8728) as possible causes; we have spare M8728s and I've
> swapped them around with no change in behavior. I have a spare M8391 in my
> own collection but it fails in a completely different way so that's not
> much help.
> I cannot find any real documentation for ENKCC so I don't know what TEST 33
> is doing, nor what ERROR 8 indicates in this context, though it seems we're
> dropping a bit somewhere :). Anyone out there sitting on a pile of 11/730
> Thanks as always!
> - Josh
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