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  • Subject: Re: Have you read this?
  • From: Chuck Lewis <clewis@xxxxxxxxxx>
  • Date: Thu, 13 Jan 2000 08:18:02 +0000

OK from reading the book "Inside the AS/400" by Frank Soltis (EVERYONE that is
interested in the AS/400 SHOULD read this book !!!), page 43-44, etc. Muskie
(A30) DID have FPU... So the 530 and 53S had it...

Chuck

leif@attglobal.net wrote:

> > except that on some (all?) AS/400 models, the PowerPC floating point
> > unit is disabled while running OS/400. So the calculations would run
> > very slowly with emulated floating point operations.
> > ---------------
> > I find it a little difficult to believe that Rochester would design what
> they
> > call "IBM's fastest floating point processor" for the old Muskie chip sets
> and
> > then turn the thing off in all of those 530 and 53S machines.  Maybe the
> FPU's
> > are turned off in low-end machines - that would be about par for the way
> IBM
> > screws us over to create their bloody "price points" - but in all models?
> That
> > doesn't seem reasonable.
>
> I have actually only confirmed this on low-end modes. I don't know about
> the high-end (that why the 'all' had a ? next to it). I was hoping from some
> input from IBM lurkers on this.
>
> About the fast FPU, don't forget that it is also used on AIX.
>
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