DK wrote:
> In article <jgboc1$k97$(E-Mail Removed)>, Paul <(E-Mail Removed)> wrote:
>
>> As for the 1GB claim, use Device Manager and verify the memory
>> ranges listed in there. Post a URL to a screen capture of
>> the Device Manager, if you can arrange it.
>
> Here it is:
> http://img828.imageshack.us/img828/9590/memorye.png
>
> I am not sure how to translate the hex memory ranges into megabytes.
>
To reference another user's allocations, I couldn't find a Device
Manager picture for Geforce 210, so I grabbed the first Linux
one I could find.
http://forums.opensuse.org/english/g...rce-210-a.html
01:00.0 VGA compatible controller: nVidia Corporation GT218 [GeForce 210] (rev a2)
Subsystem: eVga.com. Corp. Device 1212
Flags: bus master, fast devsel, latency 0, IRQ 18
Memory at fb000000 (32-bit, non-prefetchable) [size=16M]
Memory at b0000000 (64-bit, prefetchable) [size=256M]
Memory at ce000000 (64-bit, prefetchable) [size=32M]
I/O ports at ef00 [size=128]
[virtual] Expansion ROM at c0000000 [disabled] [size=512K]
Capabilities: [60] Power Management version 3
Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [78] Express Endpoint, MSI 00
Capabilities: [b4] Vendor Specific Information: Len=14 <?>
Capabilities: [100] Virtual Channel
Capabilities: [128] Power Budgeting <?>
Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 Len=024 <?>
Kernel driver in use: nouveau
The three mappings, appear to match your mapping, in terms of size.
A 16MB, a 32MB, and a 256MB segment. So it's not even reporting as
a 512MB card (as the 256MB segment would be 512MB, if it was a 512MB
card). If could be, that the card is "TurboCache", and dynamically
allocates additional memory from system memory. But that would not
affect the "free" memory reported by the OS. It doesn't explain why
it reports as 1GB.
When I compare your map to my map, it looks like your computer
is avoiding the top-most 512MB, and I don't see a device listed
that corresponds to that range. That can happen, if a fixed
allocation is given to the built-in graphics. Some of your
hardware devices needing bus space, are at 0xDE, and 0xE0 to 0xFF
would be 512MB of space.
As near as I can determine, 512MB is just being wasted. And I
can't tell exactly why. Either a BIOS bug, or still related
to the IGP (integrated graphics).
Paul