27 Apr
1998
27 Apr
'98
8:51 p.m.
"Max Eskin" <maxeskin(a)hotmail.com> wrote:
Today, I received the MCA network card Russ Blakeman
sent me.
Unfortunately, it is called a "3270". I am afraid that it's not a
real net card, but a 3270 emulator.It has a BNC connector on the
back. The driver is called "3270 Driver Revision B".
Can I use this thing with ethernet?
Yes, for certain sorts of useful. You plug the BNC T onto the back of
the card, and it stops all communication on that thin-net segment. At
least that's my experience with such devices. (They told me it was an
Ethernet card. I didn't believe them but they insisted, so I shrugged
and plugged the cable in. It took about five minutes for the
folks hollering from the other lab room to find me.)
If you want an MCA Ethernet card, look for one with both a BNC
connector and a 15-pin D (AUI) connector. Maybe an RJ45 too but
I don't recall seeing many MCA cards that had all three connectors.
-Frank McConnell
27 Apr
27 Apr
10:03 p.m.
Frank McConnell wrote:
"Max Eskin" <maxeskin(a)hotmail.com>
wrote:
I think I have a few like you describe with the 15 and bnc. I'll have to
check. Know anythink of a DCA Link card and it's use? I have no idea on
this one and I'd like to know what it's useful for.
--------------------------------------------------------------------
Russ Blakeman
RB Custom Services / Rt. 1 Box 62E / Harned, KY USA 40144
Phone: (502) 756-1749 Data/Fax:(502) 756-6991
Email: rhblake(a)bbtel.com or rhblake(a)bigfoot.com
Website: http://members.tripod.com/~RHBLAKE/
ICQ UIN #1714857
AOL Instant Messenger "RHBLAKEMAN"
* Parts/Service/Upgrades and more for MOST Computers*
--------------------------------------------------------------------
Today, I received the MCA network card Russ
Blakeman sent me.
Unfortunately, it is called a "3270". I am afraid that it's not a
real net card, but a 3270 emulator.It has a BNC connector on the
back. The driver is called "3270 Driver Revision B".
Can I use this thing with ethernet?
Yes, for certain sorts of useful. You plug the BNC T onto the back of
the card, and it stops all communication on that thin-net segment. At
least that's my experience with such devices. (They told me it was an
Ethernet card. I didn't believe them but they insisted, so I shrugged
and plugged the cable in. It took about five minutes for the
folks hollering from the other lab room to find me.)
If you want an MCA Ethernet card, look for one with both a BNC
connector and a 15-pin D (AUI) connector. Maybe an RJ45 too but
I don't recall seeing many MCA cards that had all three connectors. 
9:39 p.m.
New subject: Tony Cole's Cray-1
Remember Tony Cole, the guy that bought the Cray from Livermore and sold
the boards in acrylic frames as "memorybilia"? I just got one of the
memory boards second hand! It'll come in handy if I ever acquire a
Cray-1, but in the meantime I'd like to document it as well as I can while
info is still available. I don't suppose anybody has schematics.
It's basically a solid slab of copper (doubles as a heat fin, I suppose)
and is populated rather sparsely by chips with date codes from '80 and
'81. The chips seem to be from Fairchild primarily (the 32 F10470's look
like they might be RAM). From Mr. Cole's "limited edition" markings, I
gather that there were 400 of these boards in his Cray-1.
Any idea how much RAM is on the board? Can I interface the board to my
Sinclair ZX-81 to create the world's most perverse hybrid?
-- Doug
28 Apr
28 Apr
3:29 a.m.
[Stopping thinnet with a 3270 card...]
I once heard of a manager of some sort plugging thinnet into the back
of a VT220 (?It was VTsomething...?) video-out port. Seems he thought
it was one of those network computer deals...
[Networked computers will be OK. It means all the terminals get run from
some large computer off somewhere else. Does this sound familiar?
besides, less idiots will be able to mess up their terminals, as a terminal
should be harder to screw up, meaning less TS calls for me. All I gotta do
it get a job running one of those suckers...]
-------
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days inactive
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