<REFERENCE>PRIME>DRB>MICROCODEPARTNUMBERS
This list of microcode floppy and PROM part numbers was gathered from examples in the hands of collectors, as well as ebay auctions and perhaps comp.sys.prime posts. It was collated by Dennis Boone, 2011-2019.
Prom-based
Older machines had any relevant microcode in PROMs in the VCP or on the control panel, or perhaps on the CPU boards themselves:
2350 PRD10001-001, PRD10003-003, PRM10041-001 2450 PRD10001-002, PRD10001-004, PRM10041-001 2455 PRD10001-005
These systems' info are still needed:
all three-digit machines 2250 (same cpu as 550, and maybe 350/400)
Floppy-based
Later machines' VCPs loaded microdiagnostics and microcode from the VCP floppy drive(s). Microcode and diagnostic firmware floppies all have the same base part number: DSK7084. The suffix indicates the distinction between target machines, and between the firmware floppy and the diagnostic floppy if they were separate:
2550 -905, -906, PRM8407-001 2655 -912, -913 --or-- -922, -923, PRM10037-001 2850 -950 2950 -953 4050 -935 (uCode) -936 (uDiag 1) -937 (uDiag 2) 4150 -928 (uCode) -929 (uDiag 1) -930 (uDiag 2) 4450 -933, -934 5310 -958 5320 -960, -961 5330 -962 5340 -956 5370 -964 6150 -940 6350 -924 6450 -941 6550 -927 (dual 6350) 6650 -943 (dual 6350) 9650 -902, -904, PRM3144-983 9655 -914, -915, PRM10038-001 9750 -907, -908, PRM8700-001 9755 -920, -921, PRM10108-001 9950 -901, -903, PRM3144-982 9955 -909, -910, PRM8698-001 9955II -918, -919, PRM10109-001
These items were observed, but had confusing information associated:
???? -954
This was listed in an ebay auction by pacwesttrading. They think
they parted out a 2750, a 2955 and a 5370, but the auction named
a 4150 cpu set by board id.
These systems' numbers are still needed:
2650 ??? 2750 ??? 2755 ??? 2950 ??? 2955 ???