en:docs:dos:api:int21:37:01

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

2018/09/07 07:04 · prokushev

Int 21H, AH=37H, AL=01H

Version

2 and higher

Brief

SET SWITCH CHARACTER

Family API

Input

      AX = 3701h
      DL = new switch character

Return

AL = status

          00h successful
          FFh unsupported subfunction

Macro

Notes

documented in some OEM versions of some releases of DOS; DOS 2.x had

        a SWITCHAR=c setting in CONFIG.SYS
      supported by OS/2 compatibility box and Novell DOS 7
      ignored by MS-DOS 5+ and DR DOS 3.41-6.0; DR DOS 6.0 and Novell DOS 7
        leave AX unchanged

See also

AX=3700h

Note

DOS API
Process manager INT 20H, INT 21H: 00H, 25H, 26H, 31H, 34H, 35H, 4CH, INT 22H, INT 27H, INT 28H
File manager INT 25H, INT 26H, INT 21H: 0DH, 0EH, 0FH, 10H, 11H, 12H, 13H, 14H, 15H, 16H, 17H, 19H, 1AH, 1BH, 1CH, 21H, 22H, 23H, 24H, 27H, 28H, 29H, 2EH, 2FH, 32H, 3305H, 36H
Character Device I/O INT 29H, INT 21H: 01H, 02H, 03H, 04H, 05H, 06H, 07H, 08H, 09H, 0AH, 0BH, 0AH, 0CH
Signals INT 23H, INT 24H, INT 21H: 3300H, 3301H, 3302H
Memory manager
Date and Time INT 21H: 2AH, 2BH, 2CH, 2DH
Misc INT 21H: 30H, 3306H, 3700H, 3701H, 3702H, 3703H
NLS INT 21H: 3303H, 3304H
2018/09/04 19:23 · prokushev

en/docs/dos/api/int21/37/01.txt · Last modified: 2020/12/14 10:59 by prokushev