en:docs:dos:api:int21:44:05

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=05H

Version

2 and higher

Brief

WRITE TO BLOCK DEVICE CONTROL CHANNEL

Family API

Input

AX = 4405h
BL = drive number (00h = default, 01h = A:, etc)
CX = number of bytes to write
DS:DX -> data to write

Return

Return: CF clear if successful

    AX = number of bytes actually written
CF set on error
    AX = error code (01h,05h,06h,0Dh) (see #01680 at AH=59h/BX=0000h)

Macro

Notes

format of data is driver-specific
this function was not supported by Digital Research's DOS Plus

See also

AX=4403h“DOS”,AX=4404h“DOS”,INT 2F/AX=122Bh

Note


en/docs/dos/api/int21/44/05.txt · Last modified: 2021/05/01 14:17 by prokushev