On Tue, Mar 24, 2009 at 7:35 AM, Harry Wahl <[email protected]> wrote:

> Platform Solutions, Inc. had this technology and much more. Their
> technology is now IBM's.
>
>
Doesn't PSI does the opposite of what Mantissa claims to be working on?

PSI runs z architecture on x86 hardware whereas Mantissa claims to run x86
architecture on z hardware.

Combine the two and you could run Windows on z/VM on a x86 emulating a z
machine.    Sounds snappy :-)

BTW: MacOS did this quite successfully when they switched from 68000 to
Power architecture.   You could run your 68000 binaries and they would be
dynamically translated into a cache Power instructions.   They did it again
when they moved to x86.

See: http://knowledgerush.com/kr/encyclopedia/Mac_68K_emulator/

Of course, modern byte-code VMs use dynamic translation ("JIT") to translate
frequently used byte codes into native machine instructions.  Yet, it is
still amazing how many people think that Java is still only "interpreted".
Quoting from an Austin SHARE presentation on PHP:

"Unlike Java or other interpretive language, PHP’s focus is to
use the script to invoke “native” C subroutines that do the
actual work at full speed"


Kirk Wolf
Dovetailed Technologies

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