1 Jul
2011
1 Jul
'11
9:31 a.m.
On 7/1/11 12:25 PM, Gene Buckle wrote:
What IS a "Bus and Tag" cable and what about them makes them difficult
to make?
B&T is the "parallel channel" interface found on most IBM mainframes.
There are two cables, "bus" which carries data, and "tag" which
carries protocol and handshaking information. B&T, if memory serves, is
good for about 4.5Mbps.
The cables are just a pain. This technology dates back to the 1960s,
and it uses big heavy cables about 1" in diameter, and big huge bizarre
connectors.
-Dave
--
Dave McGuire
Port Charlotte, FL
I'll second that plea. I have a full 9221
mainframe (2 IO cages and 5
DASD) but NO cables. Sigh. Haven't found any here in England so far.
So if
there are stacks of them eating up space under your raised floor, or in
your garage, please consider me too!
Colo spaces that date back to the mainframe days are great places to
find Bus and Tag cables. The hard part is convincing the manager to
let you dig them out.