A CDE Definition
z/Architecture
The hardware architecture in IBM's System z (zSeries) mainframes. z/Architecture was an evolutionary step beyond ESA/390. The primary difference is the widening of all registers from 32 to 64 bits and the use of 64-bit addressing for both real and virtual storage. It includes the ability to execute programs using older 24 and 31-bit addressing so that ESA/390 programs run unchanged.
Introduced in 2000, z/Architecture added 130 instructions, many of which deal with 64-bit data, and support for Variable Workload License Charges, which allows software to be priced based on usage. See zEnterprise, System z and z/OS.

Before/After Your Search Term
Before | After |
---|---|
YouTube Gaming | z-axis |
YouTube Red | z buffer |
YouTube TV | z-card |
YPbPr | Z-CAV |
YPrPb | Z-CLV |
YT | Z order |
YUV | Z-ordering utility |
YUV/RGB conversion formulas | z/OS |
Z | Z Series |
Z-80 | z/VM |
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