( draw pixel )

|0100 @RESET

	,0001 IOW ( x0 )
	,0001 IOW ( x1 )
	,0001 IOW ( y0 )
	,0001 IOW ( y1 )
	,0101 IOW ( clr )
	,0001 IOW ( noredraw )

	,0001 IOW ( x0 )
	,0101 IOW ( x1 )
	,0001 IOW ( y0 )
	,0001 IOW ( y1 )
	,0201 IOW ( clr )
	,0001 IOW ( noredraw )

	,0001 IOW ( x0 )
	,0201 IOW ( x1 )
	,0001 IOW ( y0 )
	,0001 IOW ( y1 )
	,0301 IOW ( clr )
	,0101 IOW ( redraw! )

BRK

|c000 @FRAME BRK 
|d000 @ERROR BRK 
|FFFA .RESET .FRAME .ERROR