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- ;---------------------------------------------------------------------
- ; ASM88 FILE: ENDPROC.A End Process
- ; ----------
- ; WRITTEN: 25/10/87
- ; -------
- ; PURPOSE: This is one of a series of files which take
- ; ------- advantage of INT 21H functions under MS-DOS.
- ; In each case the error situation is marked by
- ; the carry flag being set. We use the De Smet
- ; external variable '_carryf' to see whether the
- ; carry is set on return from the function.
- ; If so, the error code can be used to obtain
- ; information about the specific error.
- ;
- ; USAGE: void ENDPROC(ret_code)
- ; ----- int ret_code; /* can be retrieved by the
- ; parent using Function 4dh */
- ;
- ; DEPENDENCIES: De Smet C V 2.44+
- ; ------------
- ; Copyright 1987 - Cogar Computer Services Pty. Ltd
- ;---------------------------------------------------------------------
-
- CSEG
- PUBLIC ENDPROC_
-
- ENDPROC_:
- push bp ; normal De Smet C start
- mov bp,sp ; point to the stack
- mov ax,ds ; and make ES common with DS
- mov es,ax
- ;----------------------------------------------------------------------
- ; The unique programme follows.
- ;----------------------------------------------------------------------
- mov byte al,[bp+4] ; the return code
- mov ah,4ch
- int 21h
- jc ENDPROC_ERROR
- jmp ENDPROC_QUIT
- ENDPROC_ERROR:
- mov si,[bp+6] ; get address of '_carryf' variable
- mov byte [si],1 ; return with _carryf = 1
- ;----------------------------------------------------------------------
- ; Normal programme termination.
- ;----------------------------------------------------------------------
- ENDPROC_QUIT:
- pop bp ; restore starting conditions
- ret
- ;----------------------------------------------------------------------