[LinuxBIOS] LinuxBios on a HP ePC C10 ?
corey_osgood at verizon.net
Fri Mar 9 07:59:10 CET 2007
joe at smittys.pointclark.net wrote:
> Quoting joe at smittys.pointclark.net:
>> Quoting Corey Osgood <corey_osgood at verizon.net>:
>>> Uwe Hermann wrote:
>>>>>> Currently it seems I am not able to install anything bigger then
>>>>>> 256 MB ram,
>>>>>> would a bios upgrade change this ?
>>>> Depends on where the limitation comes from. If the proprietary BIOS
>>>> simply doesn't support more RAM, then maybe.
>>>> If your northbridge/chipset doesn't support more RAM (didn't check),
>>>> then you're out of luck -- no BIOS will help you in that case.
>>> On the i815 chipset, the limit for ram is 512MB. I can only assume
>>> this to be the same for the i810, since the i815 is extremely
>>> similar. You should probably grab the i810's docs off intel.com,
>>> they should say in the first few pages if there's as limit and what
>>> it is.
>> Correct me if I am wrong, i810 supports 512MB PC100 with a FSB of 100Mhz,
>> i810E supports 512MB PC133 with a FSB of 100Mhz, and i815 supports
>> 512MB PC133 with a FSB of 133Mhz, and then we have my baby the 830M
>> which is a mobile cross breede betwwen a i815 and i845 chipset and it
>> supports 1024MB PC133 with a FSB of 133Mhz.
>> Thanks - Joe
> Also, does it matter in LinuxBios how many DIMM slots you have?? I
> know in normal bios's there is a max per channel. For example on an
> i810 with two DIMM slots it would be able to support 256MB max per
> channel or slot. If you only had one slot you could could only have
> 256MB. Is this determined by the bios or chipset?
> Thanks - Joe
I don't think this is a problem for the i810/i815, although I suppose it
could be some board-specific thing. My D815EEA has 4 dimm slots, and I
only have 1 512MB PC133 DIMM in it. Adding any more memory gives an
error in the BIOS that it can't initialize the extra ram. I have heard
of/seen this on other chipsets/boards, although I don't remember what
they were off the top of my head, it was too long ago and I don't think
I have them any more.
As far as the i810E supporting 512MB of PC133 at 100MHz, that' doesn't even
make sense. PC133 should be backwards compatible with PC100 , so
supporting PC100 would have meant it also supported PC133 (just not at
full speed), and vice versa. However, you are indeed correct on the
i815's memory support.
More information about the coreboot