2_3_3.asm

draw a rectangle and you can choose the color it presents

DATA 	SEGMENT
     
DATA 	ENDS

STACK 	SEGMENT
    
STACK 	ENDS

CODE 	SEGMENT
    	ASSUME 	CS:CODE,DS:DATA,SS:STACK
START:
    	MOV 	AX,DATA
    	MOV 	DS,AX
	mov		ah, 0
	mov		AL, 12H
	int		10h
    	mov		cx,10
	mov		dx,50
circle1:
	cmp		cx,50
	jz		done1
	inc		cx
	call	draw
	jmp	circle1
done1:
	mov		cx,50
	mov		dx,50
circle2:
	cmp		dx,150
	jz		done2
	inc		dx
	call	draw
	jmp	circle2
done2:
	mov		cx,50
	mov		dx,150
circle3:
	cmp		cx,10
	jz		done3
	dec		cx
	call	draw
	jmp	circle3
done3:
	mov		cx,10
	mov		dx,150
circle4:
	cmp		dx,50
	jz		done4
	dec		dx
	call	draw
	jmp	circle4
done4:
    	MOV 	AH,4CH
    	INT 	21H

draw	proc	far
	mov		ah,0ch
	int		10h
	ret
draw	endp

CODE 	ENDS
    	END 	START