On Thu, Feb 17, 2022 at 4:28 PM Chris Zach via cctalk <cctalk at classiccmp.org> wrote: 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_MicroPDP1… 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.p… 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.

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_MicroPDP1… >> >> 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.p… >> >> 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.