On 08/31/2015 02:59 AM, Dave G4UGM wrote:
I seem to remember that 1620 core runs warm, and you have to wait for it to
get warm before the machine comes on-line ... see last paragraph
http://www.angelfire.com/oh3/ebjoew/IBM_1620_Core_Memory.html
Yes, many IBM machines used heaters to stabilize the core
temperature. The 360/40 and 360/50 had heaters for the
local store (register stack). Not sure about the 360/30
where local and main store were all in the same unit. Not
sure if the higher machines also heated the main store.
Jon
