( screen )

&Screen { width 2 height 2 pad 4 x 2 y 2 color 1 }

;centerx 2 ;centery 2 ;i 2

|0100 @RESET 

	( find screen center )
	~dev/screen.width #0002 DIV2 =centerx
	~dev/screen.height #0002 DIV2 =centery

	( draw hor line )
	#0000 =i
	~centery =dev/screen.y
	@draw-hor
		#03 ~i =dev/screen.x =dev/screen.color
		~i #0002 ADD2 =i ( increment )
	~i ~dev/screen.width LTH2 ,draw-hor ROT JMP? POP2

	( draw ver line )
	#0000 =i
	~centerx =dev/screen.x
	@draw-ver
		#03 ~i =dev/screen.y =dev/screen.color
		~i #0002 ADD2 =i ( increment )
	~i ~dev/screen.width LTH2 ,draw-ver ROT JMP? POP2

	( draw pixel in the middle )
	#01 ~centerx ~centery =dev/screen.y =dev/screen.x =dev/screen.color

BRK

|c000 @FRAME BRK
|d000 @ERROR BRK 

|FF10 ;dev/screen Screen

|FFF0 [ f0ac f0bb f053 ] ( palette )
|FFFA .RESET .FRAME .ERROR ( vectors )