ID these DEC floppy disks

[Sytse van Slooten]

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 <cctalk at classiccmp.org> 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:  TILBURY2591nw.johnson at ieee.org
> 
> 
> 
> On 2022-02-17 20:26, Glen Slick via cctalk wrote:
>> On Thu, Feb 17, 2022 at 4:28 PM Chris Zach via cctalk
>> <cctalk at classiccmp.org>  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.