hp.asm

用汇编语言在调用dos功能画十字。

;           COPYRIGHT@hp
;	  eslab.whut.edu.cn
; Example:Draw a cross use dos assembly.
;INOUT MACRO X,Y,Z
;	MOV AH,X
;	MOV Y,Z
;	INT 10H
;	ENDM
code segment 
       assume ds:code,cs:code
start:  
	mov al,0
	mov bh,7
	mov ch,0
	mov cl,0
	mov dh,24
	mov dl,79
	mov ah,6
	int 10h
; setting it as graphic mode

        MOV AH,0
	MOV AL,10H          ;IF SET AL IS 5, 320*200        ;IF AL IS 6 NO GRAPHIC
	INT 10H
	
	;MOV BH,1
	;INOUT 0BH,BL,3
	MOV CX,200
	MOV DX,100
	MOV BH,0
LOOP0:  CMP CX,350
	JA NEXT1
	MOV AL,0EH
	MOV AH,0CH
	INT 10H
	inc cx
	JMP LOOP0
NEXT1:	CMP DX,150
	JA NEXT2
	INC DX
	MOV CX,200
	JMP LOOP0
NEXT2:	MOV CX,250
	MOV DX,50
	
LOOP1:	MOV AL,0EH
	MOV AH,0CH
	INT 10H
	INC CX
	CMP CX,300
	JBE LOOP1
	INC DX
	MOV CX,250
	CMP DX,200
	JBE LOOP1
	INC DX
	MOV CX,250
	CMP DX,200
	JBE LOOP1
	MOV AH,4CH
	INT 21H
CODE 	ENDS
END 	START