7521Plus / N N/B MAINTENANCE
7. Maintenance Diagnostics
7.2 Error Codes : Following is a list of error codes in sequent display on the PIO debug board.
SYSTEM SOFT BIOS:
CODE | DESCRIPTION |
37h | Protected mode exit successful |
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 tabl |
3Dh | Search and init the Mouse |
3Eh | Update num lock status |
3Fh | OEM initialization of COMM and LPT ports |
40h | Configure the COMM and LPT ports |
41h | Initialize the floppies |
42h | Initialize the hard disk |
43h | OEM's init of PM with USB |
44h | Initialize additional ROMs |
45h | Update NUMLOCK status |
46h | Test for coprocessor installed |
47h | OEM's init of power management, (check SMI) |
48h | OEM functions before boot (PCMCIA, CardBus) |
49h | Dispatch to operation system boot |
4Ah | Jump into bootstrap code |
