On 2017-12-05 11:11, Chris Craddock wrote:
Ironically, OPEN ends up making a copy of the DCB in protected storage anyway,
so they didn't save anything by putting it in user key storage.
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In 1970 "our" S360/50 made no such copies! OS/MFT gobbeled up 28 of the
256K,
leaving 14K for the printer partition, 54K for the reader/interpreter
partition and two
80K partitions for production, compiles and tests.
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