V7M

[johnh at psych.usyd.edu.au]

V7M was the DEC distribution of V7 (pre Ultrix days). Fred Canter did
most of the work, along with Jerry Brenner and Armando Stettner. It
supported non ID space machines, and some of the newer DEC hardware.
My manual lists it as working with :-

CPUS:-	11/23, 34, 44, 45/50/55, 60 and 70
Disks:-	RL02, RK06, RK07, RM02/3, RP04/5
Tapes:-	TU10, TE10, TU16, TE16, TS11

There was a strip down of V6 called Miniunix that would run on machines
without memory management, such at the 11/20, 05, 10 and 35/40 (without MMU
option). It required a full 56Kb machine, used the first 28Kb for the kernel
and swapped the last 28Kb for each process. Pipes worked by using a temporary
inode to store the data and swapping the processes. It was realllllllll slow.

The was also a similar version for 11/03's. I remember that there was an early
bug in that updates would always rewrite open inodes (last access time had
changed). You could physically wear out a floppy disk, since it was forever 
rewriting the sector with the inode for the console terminal.


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