From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <3893CE3D.99AACAB6@netx4.com> Date: Sun, 30 Jan 2000 00:38:05 -0500 From: Dan Malek MIME-Version: 1.0 To: Shuangjun Zhu CC: linuxppc-embedded Subject: Re: Help about MPC823 Video and Cache References: <002201bf6861$20f24d10$69f001dc@sjzhu.sps.mot.com> Content-Type: text/plain; charset=us-ascii Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: Shuangjun Zhu wrote: > After the system boot up, the text on the TV flicker fiercely out, > if I disable the I-Cache throught the EST visionProbe tool, Determine your silicon revision and look on the Motorola web site for errata and application notes. Early versions of the 823 didn't work so well, especially at high resolution and refresh rates. Later versions of the 823 added somewhat undocumented SIU configurations to improve the arbitration of the U-bus and access to the frame buffer by the video controller. If all seems well on the silicon front, make sure your video configuration is proper. Excessively high (and unnecessary) refresh rates cause problems. -- Dan ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/