HP Notebook 100 Compaq Armada 100S and Notebook 100 Series Maintenance and Ser - Page 36

OEM's functions before boot PC Card, CardBus., Update NUMLOCK status. - count

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Table 2-1 continued Code Description 2Fh Sign-on messages displayed. 30h Special init of keyboard ctlr. 31h Test if keyboard present. 32h Test keyboard interrupt. 33h Test keyboard command Byte. 34h Test, blank, and count all RAM. 35h Protected mode entered safely (2). 36h RAM test complete. 37h Protected mode exit successfully. 38h Update keyboard output port to disable gate of A20. 39h Setup cache controller. 3Ah Test if 18.2Hz periodic working. 3Bh Initialize BIOS data area at 40.0. 3Ch Initialize the hardware interrupt vector table. 3Dh Search and initialize the mouse. 3Eh Update NUMLOCK status. 3Fh OEM initialization of COM and LPT ports. 40h Configure the COM and LPT ports. 41h Initialize the diskette drive. 42h Initialize the hard disk. 43h OEM's unit of PM with USB. 44h Initialize additional ROMs. 45h Update NUMLOCK status. 46h Test for coprocessor installed. 47h OEM's unit of power management (check SMI). 48h OEM's functions before boot (PC Card, CardBus). 49h Dispatch to operation system boot. 4Ah Jump into bootstrap code. 2-4 Troubleshooting

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2
-
4
Troubleshooting
Table 2-1
continued
Code
Description
2Fh
Sign-on messages displayed.
30h
Special init of keyboard ctlr.
31h
Test if keyboard present.
32h
Test keyboard interrupt.
33h
Test keyboard command Byte.
34h
Test, blank, and count all RAM.
35h
Protected mode entered safely (2).
36h
RAM test complete.
37h
Protected mode exit successfully.
38h
Update keyboard output port to disable gate of A20.
39h
Setup cache controller.
3Ah
Test if 18.2Hz periodic working.
3Bh
Initialize BIOS data area at 40.0.
3Ch
Initialize the hardware interrupt vector table.
3Dh
Search and initialize the mouse.
3Eh
Update NUMLOCK status.
3Fh
OEM initialization of COM and LPT ports.
40h
Configure the COM and LPT ports.
41h
Initialize the diskette drive.
42h
Initialize the hard disk.
43h
OEM’s unit of PM with USB.
44h
Initialize additional ROMs.
45h
Update NUMLOCK status.
46h
Test for coprocessor installed.
47h
OEM’s unit of power management (check SMI).
48h
OEM’s functions before boot (PC Card, CardBus).
49h
Dispatch to operation system boot.
4Ah
Jump into bootstrap code.