User's Manual

54
POST (hex) Description
29h 1. Program CPU internal MTRR (P6 & PII) for
0-640K memory address.
2. Initialize the APIC for Pentium class CPU.
3. Program early chipset according to CMOS
setup. Example: onboard IDE controller.
4. Measure CPU speed.
5. Invoke video BIOS.
2Ah Reserved
2Bh Reserved
2Ch Reserved
2Dh 1. Initialize multi-language
2. Put information on screen display, including
Award title, CPU type, CPU speed ….
2Eh Reserved
2Fh Reserved
30h Reserved
31h Reserved
32h Reserved
33h Reset keyboard except Winbond 977 series
Super I/O chips.
34h Reserved
35h Reserved
36h Reserved
37h Reserved
38h Reserved
39h Reserved
3Ah Reserved
3Bh Reserved
3Ch Test 8254
3Dh Reserved
3Eh Test 8259 interrupt mask bits for channel 1.
3Fh Reserved
40h Test 8259 interrupt mask bits for channel 2.
41h Reserved