Advanced Configuration and Power Interface Specification

ACPI-Defined Devices and Device-Specific Objects
Buffer (){
Floppy 0
Floppy 1
Floppy 2
Floppy 3
Tape
}
// Boolean DWORD
// Boolean DWORD
// Boolean DWORD
// Boolean DWORD
// DWORD – See table below
Table 9-259 Tape Presence
Value
Description
0 Device presence is unknown or unavailable
1 Device is present
2 Device is never present
>2 Reserved
9.9.2 _FDI (Floppy Disk Information)
This object returns information about a floppy disk drive. This information is the same as that
returned by the INT 13 Function 08H on IA-PCs.
Arguments:
None
Return Value:
A Package containing the floppy disk information as a list of Integers
Package {
Drive Number
Device Type
Maximum Cylinder Number
Maximum Sector Number
Maximum Head Number
disk_specify_1
disk_specify_2
disk_motor_wait
disk_sector_siz
disk_eot
disk_rw_gap
disk_dtl
disk_formt_gap
disk_fill
disk_head_sttl
disk_motor_strt
}
// Integer (BYTE)
// Integer (BYTE)
// Integer (WORD)
// Integer (WORD)
// Integer (WORD)
// Integer (BYTE)
// Integer (BYTE)
// Integer (BYTE)
// Integer (BYTE)
// Integer (BYTE)
// Integer (BYTE)
// Integer (BYTE)
// Integer (BYTE)
// Integer (BYTE)
// Integer (BYTE)
// Integer (BYTE)
Table 9-260 ACPI Floppy Drive Information
Package Element Element Object Type Actual Valid Data Width
00 – Drive Number Integer BYTE
01 – Device Type Integer BYTE
02 – Maximum Cylinder Number Integer WORD
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