All this talk of RM380/480s has prompted me to admit that I own four:
2 x Link 480Z (with one 'beige' twin 5.25 drive)
1 x 380Z (twin 8" drives and winchester)
1 x 380Z (twin 5.25" drives)
The 380Z with 8" drives is fairly well loaded:
1) IO
2) CPU/32K #1
3) 32K
4) Hi Res Graphics
5) Winchester #2
6) Analog I/O
7) Network #3
8) Terminator
#1 Containing (roll on drums, wait for it tony) a daughter card
containing the CPU and the IEEE gubbins (connected to the 'IEEE
STD 488 PORT')
#2 A 5Mbyte 5.25" unit - unfortunately expired before I acquired it
#3 This card has more wire wrap on the 'back' than any other card
I've seen that wasn't designed as such
The serial number is 35/121003 and the etch dates are 1978 or 1979
with some cards have a cloth sticker of 1980.
Doug.