17 Jul
2012
17 Jul
'12
11:43 p.m.
snip snip
You might suffer from an open NPR/NPG line on one of the open slots.
This is cured by using dthe double width cards (green handles).
The short cards only loop the bus grant lines, hence the 4 loops, but
not the NPR/NPG line.
Some non DMA cards loop this line on the board itself, others don't.
So, you may have to place a small wire on the open NPR/NPG grant line
(pin CA1 & CB1) or find a few G7273 cards.
Ed
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Are yuo using
the single-height grant boards (little square things) or
the dual-height ones (with handles)? If the former, check you've got
them
the right way round, the traces towards the M9302 end of the backplane.
Yes it certainly looks like a grant issue. I have the little square
boards and they are all correctly inserted.