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The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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;* MakeDir - Creates a specified subdirectory.
;*
;* Shows:   DOS Function - 39h (Create Directory)
;*
;* Params:  Pspec - Pointer to ASCIIZ pathname of new subdirectory
;*
;* Return:  Short integer with error code
;*          0 if successful
;*          1 if create error
 
MakeDir PROC USES ds,
        Pspec:PBYTE
 
        LoadPtr ds, dx, Pspec           ; Point DS:DX to path spec
        mov     ah, 39h                 ; DOS Function 39h
        int     21h                     ; Create Directory
        mov     ax, 0                   ; Set error code, keep flags
        .IF     carry?
        inc     ax                      ; Set error code to 1
        .ENDIF
        ret
 
MakeDir ENDP
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