Specifications

AMD Geode™ GeodeROM Functional Specification 41
Removable Media
32087C
5.2.11 Function 17h - Set Disk Type
Description:
Used by older operating systems to specify the physical geometry of a floppy disk to be formatted. Modern operating
systems use INT 13h, Function 18h (Set Media Type) because it allows for non-standard geometries, such as those
used to support 3-mode floppies in the Japan marketplace for NEC and Toshiba systems.
Supports:
Floppy disk only.
Passed:
Returns:
Special Instructions:
None.
Related Functions:
INT 13h "Function 15h - Get Disk Type" on page 39.
Parameter Description
AH 17h
AL Disk geometry, where:
00h = Diskette not present
01h = 360 KB disk in 360 KB drive
02h = 360 KB disk in 1.2 MB drive
03h = 1.2 MB disk in 1.2 MB drive
04h = 720 KB disk in 720 KB or 1.44 MB drive
DL Drive number
Parameter Description
AH Status code:
See AH in "Function 01h - Get Disk Subsystem Status" on page 33