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Acer Aspire T320 Aspire T320 Service Guide - Page 67

Program write allocation for AMD K5 CPU., Initialize the APIC for P6 class CPU.

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Checkpoint 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 4Ah 4Bh 4Ch 4Dh 4Eh 4Fh 50h 51h 52h Chapter 4 Description 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. 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) 60

Section	Page
Aspire T320	1
Revision History	2
Copyright	3
Disclaimer	3
Conventions	4
Preface	5
T.O.C	6
CH1_System Specifications	8
Overview	8
Features & Specifications	9
Aspire T320 Front Panel	11
Aspire T320 Rear Panel	12
MainBoard Layout	13
Block Diagram	15
Hardware Specifications and Configurations	16
Power Management Function	23
CH2_System Utilities	24
Entering Setup	25
Product Information	27
Standard CMOS Features	28
Advanced BIOS Features	30
Advanced Chipset Features	33
Integrated Peripherals	35
OnChip IDE Device	36
Onboard Device	38
Super IO Device	39
Power Management Setup	40
PnP/PCI Configuration	43
PC Health Status	44
Frequency/Voltage Control	45
Load Default Settings	46
Set Supervisor/User Password	47
Save & Exit Setup	48
Exit Without Saving	49
CH3_Machine Disassembly and Replacement	50
General Information	51
Before You Begin	51
Disassembly Flow Chart	52
Standard Disassembly Procedure	53
Removing the Front Panel	53
Removing the Cables	53
Removing the Modem card, CD-ROM, Floppy and HDD	54
Removing the Power Supply	55
Removing the Heatsink and the CPU	56
Removing the Memory	56
Removing the Mainboard	57
Removing the Power Button	57
Removing the LED Module	57
Removing the Daughter Board	57
Standard Reassembly Procedure	58
Installing the Daughter Board	58
Installing the LED Module	58
Installing the Power Button	58
Installing the Mainboard	58
Installing the Heatsink and the CPU	59
Installing the Memory	59
Installing the Power Supply	60
Installing the Modem card, CD-ROM, Floppy and HDD	60
Installing the Cables	61
Installing the Front Panel	62
Closing the System	62
CH4_Troubleshooting	63
Power-On Self-Test (POST)	64
POST Check Points	65
POST Error Messages List	71
Error Symptoms List	73
CH5_Jumper and Connector Information	78
Checking Jumper Settings	78
Setting Jumpers	78
Connectors and Jumpers	79
Function Definition	80
Pin Definition	81
Jumper Setting	81
Connectors and Headers Definition	81
Expansion I/O	84
CH6_FRU (Field Replaceable Unit) List	87
Exploded Diagram	88
Parts	89
AppB_Test Compatible Components	97
Microsoft Windows XP Home Environment Test	98

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