Appendix B BIOS POST Codes B-7
6Bh Program chipset registers according to items described in Setup &
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 found on diskette drive.
• ALT+F2 is pressed.
77h Detect serial ports and parallel ports.
78h Reserved.
79h Reserved.
7Ah Detect and install co-processor.
7Bh Reserved.
7Ch Init 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 you press the F1 key to continue: Clear EPA
or customization logo.
80h Reserved.
81h Reserved.
TABLE B-1 BIOS Port 80 POST Codes (Continued)
Post Code Description
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