ex1prinf.asm

a example for asm, for beginer to stady asm

			dat	    SEGMENT
				    source_buffer	DB 12H, 48H
			dat	    ENDS
			extra	SEGMENT
				    dest_buffer	DB 40 DUP(?)
			extra	ENDS
			code	SEGMENT
				    ASSUME	CS:code, DS:dat, ES:extra
		start:
					MOV		AX, dat
					MOV		DS, AX
					MOV		AX, extra			;CS不用赋值
					MOV		ES, AX

					;MOV  		AL, 07H
 			       		;ADD  		AL, 0FBH
  			      		;JO    		A88        ;JO  A88
			      		;MOV  		BX, 6666H
					;JMP		A99
	 	    		;A88:	MOV  		BX, 4444H

			   		MOV  		AL, 0F9H
	   				SUB   		AL, 7FH
	  				JL     		A88       ;JL   A88
	   				MOV   		BX, 6666H
         				JMP		A99
				A88:	MOV  		BX, 4444H

					;MOV		DL, source_buffer
					;MOV		AH, 02H
					;INT		21H

					;MOV		DL, source_buffer + 1
					;MOV		AH, 02H
					;INT		21H

					;MOV		DL, source_buffer + 2
					;MOV		AH, 02H
					;INT		21H

				A99:	MOV		AX, 4C00H
					INT		21H
			code	ENDS
					END start