User guide

Appendix B BIOS POST Codes B-7
POST Code Description
6Bh Program chipset registers according to items described in Setup and
auto-configuration table.
6Ch Reserved
6Dh 1. Assign resources to all ISA PnP devices.
2. Auto-assign ports to onboard COM ports if the corresponding item in
Setup is set to AUTO.
6Eh Reserved.
6Fh 1. Initialize diskette controller.
2. Set up diskette-related fields in 40:hardware.
70h Reserved.
71h Reserved.
72h Reserved.
73h Reserved.
74h Reserved.
75h Detect and install all IDE devices: HDD, LS120, ZIP, CD-ROM, and so on.
76h (Optional feature) Enter AWDFLASH.EXE if:
• AWDFLASH.EXE is in diskette drive.
• You press ALT+F2.
77h Detect serial ports and parallel ports.
78h Reserved.
79h Reserved.
7Ah Detect and install coprocessor.
7Bh Reserved.
7Ch Initialize HDD write-protect.
7Dh Reserved.
7Eh Reserved.
7Fh Switch back to text mode if full screen logo is supported.
If errors occur, report errors and wait for keys
If no errors occur or F1 key is pressed to continue: Clear EPA or
customization logo.
80h Reserved.
81h Reserved.
TABLE B-1 BIOS Port 80 POST Codes (Continued)