en:docs:dos:api:int21:3b

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

2018/09/07 07:04 · prokushev

Int 21H, AH=3BH

Version

2 and higher

Brief

“CHDIR” - SET CURRENT DIRECTORY

Family API

Input

      AH = 3Bh
      DS:DX -> ASCIZ pathname to become current directory (max 64 bytes)

Return

CF clear if successful

          AX destroyed
      CF set on error
          AX = error code (03h) (see #01680 at AH=59h/BX=0000h)

Notes

if new directory name includes a drive letter, the default drive is
        not changed, only the current directory on that drive
      changing the current directory also changes the directory in which
        FCB file calls operate
      under the FlashTek X-32 DOS extender, the pointer is in DS:EDX
        

See also

AH=47h,AX=713Bh,INT 2F/AX=1105h

Note


en/docs/dos/api/int21/3b.txt · Last modified: 2021/03/24 03:02 by prokushev