25 Oct
2016
25 Oct
'16
1:24 p.m.
On Oct 25, 2016, at 12:40 PM, allison <ajp166 at
verizon.net> wrote:
Section 5.2.5 of the PDP-11 UNIBUS spec:
A Unibus segment must always have a Unibus terminator at each end of its
120-ohm transmission path.
So, I don?t know how you get a value of anything other than 120-ohms given that
statement.
TTFN - Guy
Also, I think in a previous email you mentioned that the UNIBUS is 240ohm. It?s not.
It?s 120ohm.
My book says no. Qbus is for sure 120.