Int 21H, AH=38H, AL=01H

3 and higher

SET COUNTRY CODE/GET COUNTRY-SPECIFIC INFORMATION

Get:

      AL = 01h thru 0FEh for specific country with code <255 (see #01400)
      AL = 0FFh for specific country with code >= 255
         BX = 16-bit country code (see #01400)
      DS:DX -> buffer for returned info (see #01399)
Set:
      AH = 38h
      DX = FFFFh
      AL = 01h thru FEh for specific country with code <255
      AL = FFh for specific country with code >= 255
         BX = 16-bit country code (see #01400)

Get:

CF set on error
          AX = error code (02h)
      CF clear if successful
          AX = country code (Novell NWDOS v7.0)
          BX = country code
          DS:DX buffer filled

Set:

   CF set on error
          AX = error code (see #01680 at AH=59h/BX=0000h)
      CF clear if successful
          

this function is not supported by the Borland DPMI host, but no error is returned; as a workaround, one should allocate a buffer in conventional memory with INT 31/AX=0100h and simulate an INT 21 with INT 31/AX=0300h

Format of DOS 2.00-2.10 country info:

Format of DOS 2.11+ country info:

Values for country code:

Note: not all country codes are supported by all versions of DOS

AH=65h,INT 10/AX=5001h,INT 2F/AX=1404h, INT 2F/AX=1403h

Text based on Ralf Brown Interrupt List Release 61