en:docs:dos:api:int21:44:10

Note: This API call is for DOS personality only. Use Family API for portability.

2018/09/07 07:04 · prokushev

Int 21H, AH=44H, AL=10H

Version

5 and higher

Brief

QUERY GENERIC IOCTL CAPABILITY (HANDLE)

Family API

Input

AX = 4410h
BX = handle for device
CH = category code (see #01545)
CL = function code (see #01546)

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=4411h

Note


en/docs/dos/api/int21/44/10.txt · Last modified: 2021/05/01 17:19 by prokushev