[Info-vax] OpenVMS.Org quick pool

[David Froble]

JF Mezei wrote:
> Comparing EPIC to Risc,
> 
> would an X86 based platform emulator be able to better optimise RISC
> machine code (from say Alpha) compared to EPIC machine code (from say
> Itanium) ?
> 
> or would Itanium machine code have and edge because  the explicit
> instructions for parralel processing would allow the emulator to
> translate and process the explicit chunks of code in parralel ?
> 
> Would an Alpha emulator incorporate much of the alpha smarts in it ?
> (such as predictive branching and pre-translating both possible outcomes
> of a branch ?)
> 
> Or do they end up being more akin to compilers, translating a big chunk
> of foreign machine code into native code and branching to it, allowing
> the X86 CPU to do any optimisations it can while running native code ?
> 
> 
> Since IBM has the rights to the translator that Apple used as "Rosetta",
> I wonder if it might be able to provide better support for VMS (Alpha
> and/or Itanium) on its AIX/Power platform.
> 
> This could give IBM a boost by stealing the BCS customer base and giving
> them better emulation and performance than what HP could.
> 

Still trying to stick the knife between the "H" and the "P", huh ??

:-)