BIOS POST Checkpoints C-3
Table C-1 POST Checkpoint List
Checkpoint Description
6Ch FDD testing & parameter table setup

Note: The FDD LED should flash once and its head should be positioned

88h HDD testing & parameter table setup
89h Get CPU MUX

Note: This routine is to identify the user-set CPU frequency, not CPU-required frequency

90h Display POST status if necessary
93h Rehook int1c for quiet boot
94h Initialize I/O ROM
A4h Initialize security feature
A8h Setup SMI parameters
A0h Initialize Timer counter for DOS use
ACh Enable NMI
Enable parity checking
Set video mode
B0h Power-on password checking
Display configuration table
Clear memory buffer used for POST
Select boot device