IBM ThinkPad 560Z, Дополнительное руководство

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Diskette Drive Type Byte (X
'
010
'
): This byte indicates the type of
the installed diskette drive.
Figure 2-21. Diskette Drive Type Byte (X ' 010 ' )
Bit Drive Type
7–4 Diskette drive type
3–0 Reserved
Bits 7–4 These bits indicate the diskette drive type.
Figure 2-22. Diskette Drive Type Bits 7–4
Bits 7–4 Description
0 1 1 0
0 1 0 0 Diskette drive (2.88 MB)
Diskette drive (1.44 MB)
Note: Combinations not shown are reserved.
Bits 3–0 These bits are reserved.
Hard Disk Drive Type Byte (X
'
011
'
): This byte defines the type of
hard disk drive installed. X
'
00
'
indicates that no hard disk drive is
installed.
Figure 2-23. Hard Disk Type Byte (X
'
011
'
)
Bit Drive Type
7–4
3–0 Hard disk drive type 2
Hard disk drive type 3
Figure 2-24. Hard Disk Drive Type 2 (Bits 7–4)
Bit 7–4 Description
0 0 0 0
1 1 1 1 No drive installed for hard disk drive 2
Use CMOS X
'
1B
'
for hard disk drive 2
Figure 2-25. Hard Disk Drive Type 3 (Bits 3–0)
Bit 3–0 Description
0 0 0 0
1 1 1 1 No drive installed for hard disk drive 3
Use CMOS X
'
1C
'
for hard disk drive 3
2-24 ThinkPad 560Z System Board