Acer Aspire T300 Service Manual page 59

Checkpoint
29h
2Ah
2Bh
2Ch
2Dh
2Eh
2Fh
30h
31h
32h
33h
34h
35h
36h
37h
38h
39h
3Ah
3Bh
3Ch
3Dh
3Eh
3Fh
40h
41h
42h
43h
44h
45h
46h
47h
48h
49h
Chapter 4
Description
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.
Reserved
Invoke Video BIOS
Reserved
1. Initialize double-byte language font (Optional)
2. Put information on screen display, including Award
title, CPU type, CPU speed, full screen logo.
Reserved
Rederved
Reserved
Reserved
Reserved
Reset keyboard if Early_Reset_KB is defined e.g. Winbond 977
series Super I/O chips. See also POST 63h
Reserved
Test DMA Channel 0
Reserved
Test DMA Channel 1
Reserved
Test DMA page registers
Reserved
Reserved
Test 8254
Reserved
Test 8259 interrupt mask bits for channel 1
Reserved
Test 8259 interrupt mask bits for channel 2
Reserved
Reserved
Test 8259 functionality
Reserved
Reserved
Reserved
Initialize EISA slot
Reserved
1. Calculate total memory by testing the last double word
of each 64K page.
2. Program write allocation for AMD K5 CPU.
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