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.
