On Dec 10, 2007 10:19 AM, Corey Osgood <<a href="mailto:email@example.com" target="_blank">firstname.lastname@example.org</a>> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div><div></div><div>aaron lwe wrote:<br>> Dear all,<br>><br>> the via v-link bus is for data communication between northbridge and<br>> sourthbridge,<br>> if I just want to make dram work, do I need to configure the v-link bus?
<br>><br>> thanks.<br><br></div></div>No, vlink can be handled before or after ram init, and it isn't even<br>necessary, if no config is done it will default to the slowest operating<br>mode (newer chipsets may bootstrap to higher modes, depending on
<br>motherboard design). However, you do have to program the CPU bus<br>registers and all the various dram config registers before ram init.<br>Getting these settings right may be a real pain, depending on what<br>chipset you're dealing with.
<br><font color="#888888"><br>-Corey<br></font></blockquote></div><br>Thanks Corey. I've been trying to make cn700 work, until now without luck.<br>I've programmed host bus and some dram controller registers, but not all.
<br>how can I know which registers should be programmed and which needn't?<br>can you give me some advices? thanks.<br><br>