Lenovo ThinkPad 560E TP 560Z Technical Reference Manual - Page 42
Diskette Drive Type Byte X, Hard Disk Drive Type Byte X, Bits 7-4, ThinkPad 560Z System Board
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Diskette Drive Type Byte (X'010'): This byte indicates the type of the installed diskette drive. Bit Drive Type 7-4 Diskette drive type 3-0 Reserved Figure 2-21. Diskette Drive Type Byte (X'010') Bits 7-4 These bits indicate the diskette drive type. Bits 7-4 Description 0 1 1 0 Diskette drive (2.88 MB) 0 1 0 0 Diskette drive (1.44 MB) Note: Combinations not shown are reserved. Figure 2-22. Diskette Drive Type Bits 7-4 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. Bit Drive Type 7-4 Hard disk drive type 2 3-0 Hard disk drive type 3 Figure 2-23. Hard Disk Type Byte (X'011') Bit 7-4 0 0 0 0 1 1 1 1 Description No drive installed for hard disk drive 2 Use CMOS X'1B' for hard disk drive 2 Figure 2-24. Hard Disk Drive Type 2 (Bits 7-4) Bit 3-0 0 0 0 0 1 1 1 1 Description No drive installed for hard disk drive 3 Use CMOS X'1C' for hard disk drive 3 Figure 2-25. Hard Disk Drive Type 3 (Bits 3-0) 2-24 ThinkPad 560Z System Board