User`s manual

Hardware Setup
MS-7640
Chapter 2
2-23
Hardware Setup
MS-7640
Chapter 2
Debug LED Panel
Please refer to the table below to get more nformaton about the Debug LED mes-
sage.
Post Status
D1 Perform keyboard controller
BAT test. Check f wakng up from power man-
agement suspend state. Save power-on CPUID value n scratch CMOS.
03 Dsable
NMI, Party, vdeo for EGA, and DMA controllers. Intalze BIOS,
POST, Runtme data area. Also ntalze BIOS modules on POST entry and
GPNV area. Intalzed CMOS as mentoned n the Kernel Varable “wC-
MOSFlags”.
0C Detects the presence of Keyboard n KBC port.
13
Early POST n
talzaton of chpset regsters.
2A Int
alzes derent devces through DIM.
2C Int
alzes derent devces. Detects and ntalzes the vdeo adapter n-
stalled n the system that have optonal ROMs.
37 Dsplay
ng sgn-on message, CPU nformaton, setup key message and any
OEM specc nformaton.
38 Int
alzes derent devces through DIM.
3C Md POST
ntalzaton of chpset regsters.
60 Int
alzes NUM-LOCK status and programs the KBD typematc rate.
75 Int
alzes INT-13 and prepare for IPL detecton.
78 Int
alzes IPL devces controlled by BIOS and opton ROMs.
8C Late POST n
talzaton of chpset regsters.
00 Passes control to OS Loader (typcally INT 19h).
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