Thanks for that. My memory is now refreshed!

Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype:  [email protected]



On 2022-02-18 07:51, Sytse van Slooten via cctalk wrote:
http://www.bitsavers.org/pdf/dec/pdp11/xxdp/Turnbull_XXDP_Feb93.pdf  
<http://www.bitsavers.org/pdf/dec/pdp11/xxdp/Turnbull_XXDP_Feb93.pdf>

This doc gives an overview of the naming.

The leading C means PDP-11, but is not used in the file names on the xxdp packs 
and floppies - you'll see it in the listings though.

Cheers
Sytse

On 18 Feb 2022, at 03:12, Nigel Johnson Ham via cctalk<[email protected]>  
wrote:

 From my (very stale) memory, FWIW

DEC Diagnostic file names were configured thus:

First Letter - machine they run on.  ones I remember:  Z=all Unibus, 
V=LSI-11(18-bit), J=11/73(22-bit) etc.  Strangely, I seem to remember that C 
represented 11/45, but maybe they changed the scheme at one point. I got into 
sales and management with Emulex after the 11/73A!  Or perhaps the letter C was 
prepended as a media type and the rest follows the pattern

Second and third letters, the system part they were designed for.  Strangely, 
VMSxxx would be memory tests for the LSI-11, nothing to do with VMS/

Fourth letter was the actual diagnostic name if more than one for each part.

Fifth and sixth letters were major and minor rev levels.

So really the names were only unique to four positions.

When running them, I would usually only type the first four letters followed by 
two question marks.

So maybe ZUF and ZXD were amalgamations of various tests!

Or maybe they changed the scheme :-)

cheers,

Nigel


Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype:[email protected]



On 2022-02-17 20:26, Glen Slick via cctalk wrote:
On Thu, Feb 17, 2022 at 4:28 PM Chris Zach via cctalk
<[email protected]>   wrote:
Hey all!

While going through floppies I found these and was wondering what they
were. Only clue in Google was someone asking in 1997 same thing.

BL-T540B-M1 CZUFDB1 USER TESTS
BL-T541B-M1 CZXD1B1 FIELD SERVICE TESTS 1
BL-T542B-MC CZXD2B0 FIELD SERVICE TESTS 2
BL-T565B-MC CZXD3B0 FIELD SERVICE TESTS 3
BL-T583B-MC CZXD4B0 FIELD SERVICE TESTS 4

Any ideas? The first one does not have a write protect tab, the others
do. There is also one other disk I found

CZMX4E0 Micro 11 Maint RX50 4

On this one the write protect flag was torn off (was on from factory and
removed)
My guess is that these are Micro-11 diagnostic test disks, as
mentioned in Section 5.7 USER TEST DISKETTES, on Page 5-12, of this
manual:
MicroPDP-11 Systems Technical Manual, EK-MIC11-TM-002
http://www.bitsavers.org/pdf/dec/pdp11/microPDP11/EK-MIC11-TM-002_MicroPDP11_Systems_Technical_Manual_Sep85.pdf

These possibly related tests are listed as being included as part of
the XXDP distribution on page A-22 of the PDP-11 Diagnostic Handbook,
1988
http://www.bitsavers.org/pdf/dec/pdp11/xxdp/PDP11_DiagnosticHandbook_1988.pdf

ZUFlEO.BIN    MICRO-11 USER TEST #1
ZUF2EO.BIN    MICRO-11 USER TEST #2
ZUF3AO.BIN    MICRO-11 USER TEST #3
ZUF4AO.BIN    MICRO-11 USER TEST #4

If you have the ability to create ImageDsk images of these disks it
might be interesting to take a look at them.

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