28 Mar
2006
28 Mar
'06
7:24 p.m.
Tony wrote...
It's not just 'if you want to use a clock on a
DL11-W'. That jumper
completes the grant chain for one of the bus grant sigals (the one that
is used by the line time clock interrupt), if you miss it out, then _no_
device on that priority level can interrup. It's like missing out a grant
continuity card.
I took it as "if you want to yank out the M787 from a system
that previously
had one.
You can check with an ohmmeter that those 2 pins are
connected to see if
the jumper is in place.
I checked, I do have that jumper.
Jay