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Programming Languages Suite
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BORLAND TURBO ASSEMBLER
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FILT.PAK
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OFOPENW.ASM
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Assembly Source File
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1996-01-10
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1KB
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52 lines
; FILENAME: OFOPENW.ASM
; Copyright (c) 1988, 1993 by Borland International, Inc.
;
; Description: This module implements the routine FileOpenW. FileOpenW
; opens a file for writing.
;
; ASSEMBLY INSTRUCTIONS: To assemble this module use the following
; TASM command line.
;
; TASM ofopenw
include globals.inc
_TEXT segment
FileOpenW proc
; Input
; bx - file record offset
; cx - buffer size
; dx - offset of filespec
; Output (of INT 21h, Function 3Dh)
; cf - set if error occurred
; ax - error code
; 1 - if function number invalid (file-sharing must be loaded)
; 2 - if file not found
; 3 - if path not found of file doesn't exist
; 4 - if no handle available
; 5 - if access denied
; 0Ch - if file access code invalid
; Registers modified
; ax
mov WORD PTR [bx], 1 ;set status
mov [bx+2], cx ;save size
call FileAlloc ;allocate buffer
jc filopw1 ;jump if error
mov ax, 3d01h ;function and write access
int 21h ;execute
mov [bx+8], ax ;save handle
jnc filopw1
call FileFree ;deallocate
stc
filopw1:
ret
FileOpenW endp
_TEXT ends
end