ID these DEC floppy disks

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: