Table of Contents
Note: This API call is for DOS personality only. Use Family API for portability.
Int 21H, AH=44H, AL=11H
Version
5 and higher
Brief
QUERY GENERIC IOCTL CAPABILITY (DRIVE)
Family API
Input
AX = 4411h BL = drive number CH = category code (see #01558) CL = function code (see #01559)
Return
CF clear if successful AX = 0000h specified IOCTL function is supported CF set on error AL = 01h IOCTL capability not available
Macro
Notes
a program which wishes to use Generic IOCTL calls beyond those in the
standard DOS 3.2 set may use this call first to see whether a particular call is supported
See also
AX=440Ch,AX=440Dh"DOS 3.2+",AX=4410h
Note
Text based on Ralf Brown Interrupt List Release 61