physical memory

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thunderfr

physical memory

Post by thunderfr »

Hello, world.
I want to know if somebody knows the physical memory structure.
I am creating an OS and I want to know the differents physical memory address of memory video, bios memory and such.
Thanks.
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Pype.Clicker
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Re:physical memory

Post by Pype.Clicker »

yes, perica knows ... and he was keen enough to make a tutorial out of it, available on Bona Fide... Check out the QuickLinkz ;)
dh

Re:physical memory

Post by dh »

I got a chart in this little book. I'll post it when I get home ;P


Cheers, DH.
AR

Re:physical memory

Post by AR »

There's also this in the Wiki:
http://www.osdev.org/osfaq2/index.php/H ... f%20RAM%3F

It includes a copy of Perica's lower memory map as well as how to use the GRUB/BIOS memory map to discover unavailable sections in the rest of the memory.
dh

Re:physical memory

Post by dh »

Just a little note for physical memory: some modern BIOS's don't have (or can disable) the small hole in the physical memory map. I noticed mine can be turned off while setting things up one day.

Cheers, DH.
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