  | |  | Intel EM64T compatibility | Intel EM64T compatibility 2005-05-12 - By Marko Asplund
Back hi
we're developing an application that runs on Red Hat Enterprise Linux 3.0 (x86) on IA-32 based CPUs. now a potential customer would be interested in running this application on an Intel EM64T and i'm trying figure out whether we can tell them they can run our application on a EM64T without any modifications.
how compatible is EM64T with IA-32? can i just install the RHEL 3.0 (Update 4) for x86 on a EM64T machine? will it be 100% compatible with an IA-32 installation from the application perspective? is the processor required to run in legacy mode for 100% compatibility? how is legacy mode enabled exactly? can you run different applications in different modes or do you need to choose the mode at boot time?
br. -- aspa
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