; emu8086 version 4.00-Beta-12 or better is required!
; put file named "input.txt" to c:\emu8086\vdrive\c\
; (it's possible to copy "ReadMe.txt" and rename it or use any other
org 100h ; .com memory layout
mov dx, offset db; address of file to dx
mov al,0 ; open file (read-only)
mov ah,3dh
int 21h ; call the interupt
jc terminate ; if error occurs, terminate program
mov bx,ax ; put handler to file in bx
mov cx,1 ; read one character at a time
print:
lea dx, BUF
mov ah,3fh ; read from the opened file (its handler in bx)
int 21h
CMP AX, 0 ; how many bytes transfered?
JZ terminate ; end program if end of file is reached (no bytes
mov al, BUF ; char is in BUF, send to ax for printing (char is
mov ah,0eh ; print character (teletype).
int 10h
jmp print ; repeat if not end of file.
terminate:
mov ah, 0 ; wait for any key...
int 16h
ret
db " Hello World! ", 0
BUF db ?
END