30 May
1998
30 May
'98
6:58 p.m.
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.
Zane
| Zane H. Healy | UNIX Systems Adminstrator |
| healyzh(a)ix.netcom.com (primary) | Linux Enthusiast |
| healyzh(a)holonet.net (alternate) | Classic Computer Collector |
+----------------------------------+----------------------------+
| For Empire of the Petal Throne and Traveller Role Playing, |
| see http://www.dragonfire.net/~healyzh/ |
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| see http://www.dragonfire.net/~healyzh/museum.html |
31 May
31 May
3:09 a.m.
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2:42 a.m.
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? 
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.
6:38 a.m.
New subject: Q-Bus PDP-11 RAM Board (ANSWER)
> The board in question is labled:
> NSC NS23D
> It also has three jumpers near the contacts.
These are 2Mb boards. I redid the cards in the /73, pulled out the 256KW
card that was in it, and put them in, it now reports 2044KW.
Question, why 2044? I would think it would be 2048.
Zane
| Zane H. Healy | UNIX Systems Adminstrator |
| healyzh(a)ix.netcom.com (primary) | Linux Enthusiast |
| healyzh(a)holonet.net (alternate) | Classic Computer Collector |
+----------------------------------+----------------------------+
| For Empire of the Petal Throne and Traveller Role Playing, |
| see http://www.dragonfire.net/~healyzh/ |
| For the collecting of Classic Computers with info on them. |
| see http://www.dragonfire.net/~healyzh/museum.html |
10:29 a.m.
New subject: Q-Bus PDP-11 RAM Board (ANSWER)
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10:32 a.m.
New subject: Q-Bus PDP-11 RAM Board (ANSWER)
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9469
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9469
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ard＠p850ug1.demon.co.uk -
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shoppa＠alph02.triumf.ca