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14 Chapter 1
Hard Disk Drive Interface
Thermal Sensor Control
BIOS
Item Specification
Vendor &
Model
Name
Segate ST9120817AS Toshiba MK1252GSX WD WD1200BEVS WD WD1200BEVT
Capacity
(MB)
120 120 120 120
Bytes per
sector
512 512 512 512
Data
heads
2222
Drive Format
Disks 1 1 1 1
Spindle
speed
(RPM)
5400 5400 5400 5400
Performance Specifications
Buffer
size
8 MB 8 MB 8 MB 8 MB
Interface SATA SATA SATA SATA
Internal
transfer
rate
(Mbits/
sec, max)
778 400 ~ 794 typical 850 Mbits/s
maximum
850 Mbits/s
maximum
I/O data
transfer
rate
(Mbytes/
sec max)
300 300 150 maximum 300 maximum
DC Power Requirements
Voltage
tolerance
5V ±5% 5V ±5% 5V ±5% 5V ±5%
Item Specification
Thermal Sensor Chip G780
Package 8-pin MSOP
Features Thermal sensor control
Interface
I
2
C bus, address: 98h
Item Specification
BIOS vendor InSyde
BIOS Version v0.2103
BIOS ROM type W25X80VSSIG
BIOS ROM size 1Mb CMOS Boot Block Flash Memory
BIOS package 8 pin SOIC
Block Size 64 Kb per block