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+-- انجمن: Software Development Programming (http://parsicoders.com/forumdisplay.php?fid=37)
+--- انجمن: Assembly (http://parsicoders.com/forumdisplay.php?fid=38)
+--- موضوع: Windows Console Print (/showthread.php?tid=390)
Windows Console Print - Amin_Mansouri - 06-14-2011
نقل قول:Instructions: Uses the stdcall calling convention so you can call from C by declaring as 'extern _stdcall _consoleOutput(char *);'. In assembly push a pointer to a zero terminated message and call. No need to clean up the stack afterward.
کد:
.model small
.data
str1 db 10h dup(0) ; will save filename in this
buff db 1h dup(0) ; buffer to save data
str2 db 10,13,'File Not Found $' ; will print this in case file not found
.code
mov ax,@data
mov ds,ax
mov ah,62h ; reading psp contents
int 21h
mov es,bx
mov si,0080h ; 80h contains the lenght of command tail
mov al,es:[si]
mov cl,al
dec cl
mov si,0082h ; 82h starts the text of command tail
lea di,str1 ; saving it in str1, in this case the filename
read:
mov al,es:[si]
mov [di],al
inc si
inc di
loop read
mov ah,3dh ; opening the file using 3dh of int 21h
lea dx,str1 ; dx contain the filename in ASCIIZ format, i.e 0's at the end
int 21h
jnc mylabel ; there is carry generated if any error
mov ah,09h ; printing str2 on error else skip
lea dx,str2
int 21h
mylabel:
mov bx,ax ; file handle of the open file is stored in AX, need to move it in BX to read the open the file with handle AX, better store AX somewhere
label1:
mov ah,3fh
mov cx,0001h
lea dx,buff ; reading data in buff of size 1
int 21h
cmp ax,0000h ; printing till ax=0000h, i.e end-of-file
jz end1 ; will break and jump to end1 label on end of file
mov cx,0001h
lea si,buff ; printing data in buff
label2:
mov dl,[si]
mov ah,02h ; interrupt on print on screen
int 21h
inc si
loop label2
jmp label1
end1:
mov ah,4ch ; normal end of any assembly program
int 21h
end