139
8175 N/B MAINTENANCE
8175 N/B MAINTENANCE
7.2 Error codes :
Following is a list of error codes in sequent display on the PIO debug board.
Special init of COMM and LPT ports
3Fh
Update NUMLOCK status
3Eh
Search and init the mouse
3Dh
Initialize the hardware vectors
3Ch
Test for RTC ticking
3Bh
Test if 18.2Hz periodic working
3Ah
Setup cache controller
39h
Update output port
38h
Protected mode exit successful
37h
RAM test complete
36h
Protected mode entered safely(2)
35h
Test, blank and count all RAM
34h
Test keyboard command byte
33h
Test keyboard Interrupt
32h
Test if keyboard Present
31h
Special init of keyboard ctlr
30h
POST Routine Description
Code
Jump into bootstrap code
49h
Dispatch to operate system boot
48h
OEM functions before boot
47h
Test for coprocessor installed
46h
Update NUMLOCK status
45h
OEM’s init of power management
44h
Initialize option ROMs
43h
Initialize the hard disk
42h
Initialize the floppies
41h
Configure the COMM and LPT ports
40h
POST Routine Description
Code