26 Oct
2012
26 Oct
'12
10:35 a.m.
On 10/26/2012 04:21 AM, Mouse wrote:
Well, in the A/B side of it, since (if it used to be a RAM card) it's a
slot with memory interconnect, rather than Q-bus, on the C/D side.
Not that it'll hurt anything to (try to) do grant continuity on the C/D
side; in order to accommodate quad-width cards (I think that's the
term; I mean cards as wide as the KA630 or most (all?) RAM), the C/D
interconnect has to be tolerant of grant continuity connections. But
you don't need it.
That's why I said "that empty slot" rather than "those empty
slots". ;)
Also, there's a 1MB PMI memory board for the KA630 that's dual-width!
I've seen one in person, once, decades ago. I don't think DEC sold
them for very long.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
I don't have any spare grant continuity
cards...will this cause me
trouble if I just pull a ramcard out and have nothing in its slot?
You'll need
something in that empty slot, yes.