logic_control.bsf

利用图元实现层次化设计,编程完成数字序列的乘积求和

/*
WARNING: Do NOT edit the input and output ports in this file in a text
editor if you plan to continue editing the block that represents it in
the Block Editor! File corruption is VERY likely to occur.
*/
/*
Copyright (C) 1991-2006 Altera Corporation
Your use of Altera Corporation's design tools, logic functions 
and other software and tools, and its AMPP partner logic 
functions, and any output files any of the foregoing 
(including device programming or simulation files), and any 
associated documentation or information are expressly subject 
to the terms and conditions of the Altera Program License 
Subscription Agreement, Altera MegaCore Function License 
Agreement, or other applicable license agreement, including, 
without limitation, that your use is for the sole purpose of 
programming logic devices manufactured by Altera and sold by 
Altera or its authorized distributors.  Please refer to the 
applicable agreement for further details.
*/
(header "symbol" (version "1.1"))
(symbol
	(rect 16 16 112 112)
	(text "logic_control" (rect 5 0 66 12)(font "Arial" ))
	(text "inst" (rect 8 80 25 92)(font "Arial" ))
	(port
		(pt 0 32)
		(input)
		(text "clk" (rect 0 0 14 12)(font "Arial" ))
		(text "clk" (rect 21 27 35 39)(font "Arial" ))
		(line (pt 0 32)(pt 16 32)(line_width 1))
	)
	(port
		(pt 0 48)
		(input)
		(text "start" (rect 0 0 22 12)(font "Arial" ))
		(text "start" (rect 21 43 43 55)(font "Arial" ))
		(line (pt 0 48)(pt 16 48)(line_width 1))
	)
	(port
		(pt 96 32)
		(output)
		(text "clr" (rect 0 0 11 12)(font "Arial" ))
		(text "clr" (rect 64 27 75 39)(font "Arial" ))
		(line (pt 96 32)(pt 80 32)(line_width 1))
	)
	(port
		(pt 96 48)
		(output)
		(text "addclk" (rect 0 0 31 12)(font "Arial" ))
		(text "addclk" (rect 44 43 75 55)(font "Arial" ))
		(line (pt 96 48)(pt 80 48)(line_width 1))
	)
	(port
		(pt 96 64)
		(output)
		(text "OE" (rect 0 0 15 12)(font "Arial" ))
		(text "OE" (rect 60 59 75 71)(font "Arial" ))
		(line (pt 96 64)(pt 80 64)(line_width 1))
	)
	(drawing
		(rectangle (rect 16 16 80 80)(line_width 1))
	)
)