On Tue, 18 Mar 2014 09:56:17 -0500, Tom Marchant wrote: >On Tue, 18 Mar 2014 13:26:58 +0000, DASDBILL2 wrote: >... The s/360 >model 67 supported 32-bit addressing, while s/370 was limited to 24-bit >addressing >until XA in 1982 or 1983 began to support 31-bit addressing, not 32-bit like >the >model 67. > How did the 67 deal with legacy code's use of the sign bit to terminate parameter lists? Did it also have a 31-bit mode? But I suppose most such code was written for 24-bit addressing.
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