From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <37FF5CCD.41B88659@mvista.com> Date: Sat, 09 Oct 1999 10:18:37 -0500 From: Jim Lewis MIME-Version: 1.0 To: Claude Robitaille CC: linuxppc-embedded Subject: Re: Strange behavior on FADS with ICTRL==0 References: Content-Type: text/plain; charset=us-ascii Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: Claude and Dan: Thanks for the pointers. I do have an old chip and the erratta does describe this problem. Shame on me for not having looked at the erratta! -Jim Lewis Claude Robitaille wrote: > Check the version of the chip and change it to a B2 version if it is > not it. You should be able to get a sample. > > Claude > > > Jim Lewis wrote: > > > > > > > ........ If the ISCT_SER field of the > > > ICTRL register is set to 0 (which is the value on reset), the system is > > > very unstable. > > > > You have to be very careful with the configuration of 8xx control and > > debug registers. Depending upon the silicon revision, there are certain > > errata that require explicit settings of these registers. This is certainly > > one of them.....some die require serialization to be set, others require you > > never set it, others require subsequent software work around depending > > upon the setting. > > ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/