P.52 /64
POST Controller
POST Controller
POST
POST
Power On Self Test
After the BIOS code has been completely
After the BIOS code has been completely
executed, the BIOS will load the first sector
executed, the BIOS will load the first sector
of mass
of mass
-
-
storage device.
storage device.
CPU loads the Operating System (OS).
CPU
Post Code C5
Copy the BIOS from Flash ROM into
E000-FFFF shadow DRAM so that
POST will go faster
Post Code 0B
Read CMOS Data into BIOS Stack Area
GO ON the POST procedure
Post Code 50
Write all the CMOS values currently in the
BIOS stack areas back into the CMOS
Post Code 63
Clear Memory that has been used .
POST Code FF (Finished)
LOAD OS
(DOS, Win9/X,2000)
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