From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <38455921.52C11DB2@netx4.com> Date: Wed, 01 Dec 1999 12:21:37 -0500 From: Dan Malek MIME-Version: 1.0 To: Alan Mimms CC: "Mark S. Mathews" , linuxppc-embedded@lists.linuxppc.org Subject: Re: RPXLite 823 PCMCIA troubles References: <3844A2E1.64157F00@packetengines.com> Content-Type: text/plain; charset=us-ascii Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: Alan Mimms wrote: > This issue probably is nearly moot on the nearly non-superscalar (dumb as a rock) > 8xx processors, but is MUCH more important (i.e., VITAL) on the 82xx processors > with the 603ish core and on all "real" PowerPC processors. In defense of the 8xx, it isn't as dumb as some people believe. It is a PPC core that performs a number of performance enhancements, including branch folding and speculative loads. Not to the extent of a superscalar (and the 603 isn't a shining star compared to other PPCs, either), but they still happen and you have to be careful of them just like any other PPC. Designing a system using a "it doesn't happen as often" requirement is a very poor engineering practice. -- Dan ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/