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Monthly Archives: July 2008

A History of Spooling

http://www.dacs.org/archive/0007/feature4.htm

A Brief History of SPOOL
By Bill Manyin
SPOOL Definitions:
1) System Peripheral Operations OffLine
2) Simultaneous Peripheral Operations OnLine
PRIOR TO 1964 and IBM System/360 and System/360 Operating Systems, it was common for a mainframe to run only one user program at a time. Each user submitted […]

Memorry-mapped I/O input notification

With memory-mapped I/O, how does a device (controller) notify the CPU to read data?