21 Oct
2016
21 Oct
'16
12:23 p.m.
From: Paul Koning
1976 Peripherals Handbook, page 6-4. It specifies the
driver output
low voltage at 70 mA sink, not 50...
Differing editions give slightly different numbers. I was looking at the 1972
edition (which was the one that was closest to hand, no other reason); the
number I gave is on pg. 204. I haven't checked later ones to see if there
were further revisions.
The later 70mA sink spec is probably a slightly more robust number to work
with.
Noel
21 Oct
21 Oct
2:14 p.m.
I'd trust the later documents. They went through a lot of pain in the 70's
pushing the limits of what the bus could do.
If it were me, I'd build the stuff on Eurocards with a cable running to a
Unibus paddle.
On 10/21/16 12:23 PM, Noel Chiappa wrote:
From: Paul
Koning
1976 Peripherals Handbook, page 6-4. It specifies
the driver output
low voltage at 70 mA sink, not 50...
Differing editions give slightly different numbers. I was looking at the 1972
edition (which was the one that was closest to hand, no other reason); the
number I gave is on pg. 204. I haven't checked later ones to see if there
were further revisions.
The later 70mA sink spec is probably a slightly more robust number to work
with.
Noel
2985
days inactive
2985
days old
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