[RC5] building the client for Power4 or Power5
elektron_rc5 at yahoo.ca
Mon Aug 9 09:23:37 EDT 2004
On 9 Aug, 2004, at 19:35, stvernaillen at ge.cokecce.com wrote:
> You've probably figured this out by now, but afaik the latest "POWER"
> as IBM calls them are actually "PowerPC" architecture.
> I've struggled with all this a lot as well.
> The AIX dnetc for Power is only for the original POWER and POWER2
> The latest AIX for powerpc client uses the rc5 powerpc cores, indeed
> converted to toc. and this is the one to use on POWER3 and POWER4 (
> and I
> assume POWER5) cpu's as wel as the various rs64 ones.
It doesn't really matter, since the biggest differences are
supervisor-mode instructions, reserved/other bits in instructions and
registers, the time-base, and instruction mnemonics. The PowerPC also
has branch prediction.
There's a list of "deleted POWER instructions", notably abs, div, mul,
nabs, rlmi, rrib, sle, sre, srea, and anything with the MQ register. I
think most PowerPC instructions are supported by POWER (it doesn't
say). I don't think cores use any of those.
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