各位老大，我是新手，一个关于BIOS的问题

请赐教关于BIOS的系统调用int 0x15的0xe820的资料

e820返回内存的容量：
Phoenix BIOS v4.0 - GET MEMORY SIZE FOR >64M CONFIGURATIONS
AX = E801h
Return:CF clear if successful
AX = extended memory between 1M and 16M, in K (max 3C00h = 15MB)
BX = extended memory above 16M, in 64K blocks
CX = configured memory 1M to 16M, in K
DX = configured memory above 16M, in 64K blocks
CF set on error

Notes: Supported by the A03 level (6/14/94) and later XPS P90 BIOSes, as well as the Compaq Contura, 3/8/93 DESKPRO/i, and 7/26/93 LTE Lite 386 ROM BIOS. Supported by AMI BIOSes dated 8/23/94 or later. On some systems, the BIOS returns AX=BX=0000h; in this case, use CX and DX instead of AX and BX. This interface is used by Windows NT 3.1, OS/2 v2.11/2.20, and is used as a fall-back by newer versions if AX=E820h is not supported. This function is not used by MS-DOS 6.0 HIMEM.SYS when an EISA machine (for example with parameter /EISA) (see also MEM F000h:FFD9h), or no Compaq machine was detected, or parameter /NOABOVE16 was given.
更多请看:
http://www.ctyme.com/intr/int.htm
如果你打包整理出来，麻烦给我发一份:zeze0556@163.com

Hi,Zhanshi,
I see your problem about e820,
The detail about it comes from ACPI
do u see my meaning?

on the other hand,
I want to study linix,can u help me?
my work just is bios(oem),sometimes i can help u!