First thing I
have to do is another 4k of core, the 4k I have is not
quite enough to work in. The alternate is to make a RAM card
using 32kx8 parts.
Ooh, two parts and you're done :-). (Sorry, couldn't resist. Of
course most of the cost is getting the gold-plated fingers on the PCB,
in my experience!)
Not quite, you still need bus interface and buffering. I havent looked at
PDP-8 memory interface to see how and what. I have one or two
PDP11 proto/ww cards that with careful cuts for power and ground will
work fine for omnibus.
The trick is doing battery backup so it also behaves something like
core. ;)
Allison