> I am porting the northbridge 82845e for my motherboard. While coding > raminit.inc file, I took the file from the 82830 chipset directory and > modified as per the requirement of the 82845e chipset. Now I want to know, > How to get the register value of the regsiters, like DRB DRAM ROW BOUNDARY > REGISTER and etc. Do I need to read these regsiter value from the system > using normal BIOS? I could not find much details about the values in the > specification. Is my assumption is correct?
At least on the 430tx, the DRB is programmed with the highest amount of memory in each row, in 4MB chunks. In my particular case, I have one single 64M dual-sided SODIMM in Row 0. So my DRB0 has a value of 0x10 (16*4 = 64) and DRB1-5 have the same value since they are not adding any memory. Realistically you should be using a memory detection algorithm to try and find out how much memory is at each row and then programming the DRB registers correctly. I have never done this, though. Regards, Andrew _______________________________________________ Linuxbios mailing list [EMAIL PROTECTED] http://www.clustermatic.org/mailman/listinfo/linuxbios
