Hi, Tom.
z/CMS is IBM's experimental 64-bit CMS. While CMS does not exploit the
64-bit environment, it does support applications that do. z/CMS does not
directly exploit storage above 2G. On z/VM 5.3 it can be IPLed in a
virtual machine with more than 2G of storage and application programs
can use subpool DMSUSERG to allocate storage above 2G. Applications can
enter AMODE 64, the high order contents of the 64 bit general purpose
registers are saved and restored across interrupts and are mode
available to interrupt handling interfaces. However, z/CMS can not be
IPL-ed in an XC mode virtual machine, so no support for things like data
spaces.
Huegel, Thomas wrote:
Just a question of courisoty.
I'm working on installing z/VM 5.3 and besides the familiar CMS NSS I see
ZCMS NSS.
I haven't seen any reference to Z/CMS before I can IPL it but I see the
maint level is 000. CMS is 702.
Just courious.
Tom
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