Acer Power ST Aspire T300 Service Guide - Page 60

Checkpoint 4Ah 4Bh 4Ch 4Dh 4Eh 4Fh 50h 51h 52h 53h 54h 55h 56h 57h 58h 59h 5Ah 5Bh 5Ch 5Dh 5Eh 5Fh 60h 61h 62h 63h 64h 65h 66h 67h 68h Description Reserved Reserved Reserved Reserved 1. Program MTRR of M1 CPU 2. Initialize L2 cache for P6 class CPU & program CPU with proper cacheable range. 3. Initialize the APIC for P6 class CPU. 4. On MP platform, adjust the cacheable range to smaller one in case the cacheable ranges between each CPU are not identical. Reserved Initialize USB Keyboard & Mouse Reserved Test all memory (clear all extended memory to 0) Clear password according to H/W jumper (Optional) Reserved Display number of processors (multi-processor platform) Reserved 1. Display PnP logo 2. Early ISA PnP initialization - Assign CSN to every ISA PnP device Reserved Initialize the combined Trend Anti-Virus code Reserved (Optional Feature) Show message for entering AWDFLASH.EXE from FDD (optional) Reserved 1. Initialize Init_Onboard_Super_IO 2. Initialize Init_Onboard_AUDIO Reserved Reserved Okay to enter Setup utility; i.e. not until this POST stage can users enter the CMOS setup utility. Reserved Reserved Reset keyboard if Early_Reset_KB is not defined. Reserved Initialize PS/2 Mouse Reserved Prepare memory size information for function call: INT 15h ax=E820h Reserved 54 Chapter 4