31 May
1998
31 May
'98
2:52 a.m.
I have NS23M (256KB) and NS23S (1MB or 4MB) boards and docs for them.
There is no mention of an NS23D. It could be like the NS23S?
Dave
Tim Shoppa wrote:
I got a non-DEC PDP-11/73 today minus the CPU
(not a big deal, I saw the
CPU that had been in it, and I've got two of them). Anyway I've managed to
identify all of the haul of boards, except the RAM boards. I was told they
are 2Mb boards but the person wasn't sure. Also I'm wondering if anyone
has the switch settings for them.
The board in question is labled:
NSC NS23D
It also has three jumpers near the contacts.
It's a National Semiconductor board. But I didn't know that they
made any as large as 2 Mbytes; the largest NatSemi Q-bus board
that I've ever seen is only 256kbytes. Can you identify the
memory chip type and count how many are on the board?
Tim.