en:docs:dos:api:int21:24

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

2018/09/07 07:04 · prokushev

Int 21H, AH=24H

Version

1 and higher

Brief

SET RANDOM RECORD NUMBER FOR FCB

Family API

Input

      AH = 24h
      DS:DX -> opened FCB (see #01345)

Return

none

Notes

computes the random record number corresponding to the current record

        number and record size, then stores the result in the FCB
      normally used when switching from sequential to random access
      not supported by MS Windows 3.0 DOSX.EXE DOS extender
       

See also

AH=21h,AH=27h,AH=42h

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, 39H, 3AH, 3BH
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, 3800H, 3801H
2018/09/04 19:23 · prokushev

en/docs/dos/api/int21/24.txt · Last modified: 2020/12/09 02:51 by prokushev