Mainframes of the 60s rarely had much more. Back in the early 70s I worked
at Burger King Corporation on their Point of Sale systems which were 4K (12
bit words) PDP-8/M except in Connecticut where we had to go to 8K because
of the complicatred taxes. These were core memories which DEC charged about
$5000 apiece. The real advantage to core was that is was non-volatile. The
BK POS systems had no disks or tapes. On powerfail, it would save its
plethora of registers (sic - 1 accumulator, 1 link bit, PC, 1 MQ if
installed). When power came back it would simply restart where it left off.
The down side, if it ever crashed, we had to send in a service person with
a paper tape reader.
"Jerry Eckert" wrote:
> It's hard to imagine a 360 with only 16 KB of memory. IIRC, the PDP-11/20
> (circa 1972) even had more memory than that.
--
Jerry Feldman <[EMAIL PROTECTED]>
Boston Linux and Unix user group
http://www.blu.org
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