On 3/23/2014 9:34 PM, Timothy Sipples wrote:
Suresh Chacko writes:
z/OS runs only on zSeries hardware architecture.
No, that's not correct as written -- and "zSeries hardware architecture" is
a bit oddly phrased anyway. To clarify, z/OS 1.6 and subsequent releases
require z/Architecture. z/OS 1.5 and prior releases were still compatible
with some servers that implemented ESA/390 but not z/Architecture.
True. Also, nothing lower than OS/390 2.10 will run reliably on a
machine with a 2-level TLB (z890/z990 and higher) because those
operating systems do not do some of the necessary TLB purges. There
might also be other hardware incompatibilities (e.g., storage increment
sizes) that would prevent MVS execution on modern hardware.
--
Edward E Jaffe
Phoenix Software International, Inc
831 Parkview Drive North
El Segundo, CA 90245
http://www.phoenixsoftware.com/
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