Thank you for your quick and accurate answers.
My "junk-box" 11 (
jb11.notms.net) is happy and
on my local network.
For those of you who may be interested the system is built
entirely from scrap..
The CPU is from a Decserver 550. It's a j11 (18mhz.) with
1.5 meg of ram. and pdp11/53 proms. I bought the RQDX3 on
E-bay. The disk drive was from My ever decreasing pile of
MFM drives (rd32)
The chassis is home built. (stop laughing it looks pretty
good ;-) The power supply is an open frame switcher from a
local electronics scrap dealer. I wire-wrapped the power-on
reset and line time clock generator circuits. The boards
are in a H-9270 (Q-18) backplane with additional lines
wrapped to make it Q-22.
It sounds like a real kludge! Anybody got a spare BA23? ;-)
I loaded the root filesystem with vtserver. Thanks Warren!
VTC and vtserver were used to load /usr. I had to strip
a lot of stuff from /usr to get it to fit on a single
drive. (games doc ingres and man pages)
# df
Filesystem 1K-blocks Used Avail Capacity Mounted on
/dev/ra0a 9842 2952 6890 30% /
/dev/ra0c 26084 14966 11118 57% /usr
As soon as I build a copy of Chuck Dickman's ATA board
I'll load up everything.
joe lang