Table of Contents
Note: This API call is for DOS personality only. Use Family API for portability.
Int 21H, AH=44H, AL=02H
Version
2 and higher
Brief
READ FROM CHARACTER DEVICE CONTROL CHANNEL
Family API
Input
AX = 4402h BX = file handle referencing character device CX = number of bytes to read DS:DX -> buffer
Return
CF clear if successful
AX = number of bytes actually read 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 (also see separate entries below for some specific cases) this function was not supported by Digital Research's DOS Plus
See also
AX=4400h,AX=4403h“DOS”,AX=4404h“DOS”,INT 2F/AX=122Bh
Note
Text based on Ralf Brown Interrupt List Release 61