Philip Hazel wrote: > On Thu, 1 Feb 2007, John W. Baxter wrote: > >> Except that very few modern machines use "core". (I'm not even sure Atlas >> used it.) > > Atlas used it. IBM 360s and even early 370s used it. We had 2 megabytes > of core on our 370/165 but the 3rd and 4th megabytes that were > subsequently added were semiconductor memory. Each megabyte about the > size of a domestic refrigerator. >
Even AN/FSQ-7 (twinned Whirlwind II, about 26 or so built) used mag core. Doesn't get much older than that or you are into 'one of a kind' gear. Most 'affordable' gear of that day used mercury or ferro-resonant delay lines and drum or 'fast' tape (See IBM TOS) as primary 'online' memory, punched cards or paper tape for offline. How soon we forget 60+ hour assembler passes... ;-). Bill -- ## List details at http://www.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://www.exim.org/eximwiki/
