Hope this is not a duplicate. The first one did not show up.
I have just obtained a Cromemco 64KZ board. This has 64K of RAM and
I'd like to test this out this weekend. Unfortunately, I don't have
any documentation.
There are 4 banks of RAM (16K x 8) Each bank is labeled "page0",
"page1", "page2" and "page3". There are also 3 8-pin dip switches:
I have a couple of photos at:
http://www.msdsite.com/vcomp/cromemco/photos.html
Since this is a 64K board and since there is other memory in my
system. I'm hoping this allows some sort of bank switching. But
without docs, I don't know how to use it.
I assume the Bank A/B allow setting which bank a particular 16K might
reside but am not sure. And the address lines of A15, A14 are a
mystery.
Is there a way to switch banks by writing to an I/O port? Location?
Can any of you help with an explanation how this works and how I might
use the switches?
Thanks in advance,
Mike
Received on Wed Aug 21 2002 - 23:54:01 BST