key_matrix44.bsf

FPGA EP1C6Q240C8 4*4键盘模块 4*4矩阵键盘

/*
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) 1991-2008 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 from 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 16 208 112)
	(text "key_matrix44" (rect 5 0 72 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 "key_in[3..0]" (rect 0 0 59 12)(font "Arial" ))
		(text "key_in[3..0]" (rect 21 43 80 55)(font "Arial" ))
		(line (pt 0 48)(pt 16 48)(line_width 3))
	)
	(port
		(pt 192 32)
		(output)
		(text "key_pressed" (rect 0 0 63 12)(font "Arial" ))
		(text "key_pressed" (rect 108 27 171 39)(font "Arial" ))
		(line (pt 192 32)(pt 176 32)(line_width 1))
	)
	(port
		(pt 192 48)
		(output)
		(text "key_function" (rect 0 0 64 12)(font "Arial" ))
		(text "key_function" (rect 107 43 171 55)(font "Arial" ))
		(line (pt 192 48)(pt 176 48)(line_width 1))
	)
	(port
		(pt 192 64)
		(output)
		(text "key_value[3..0]" (rect 0 0 77 12)(font "Arial" ))
		(text "key_value[3..0]" (rect 94 59 171 71)(font "Arial" ))
		(line (pt 192 64)(pt 176 64)(line_width 3))
	)
	(drawing
		(rectangle (rect 16 16 176 80)(line_width 1))
	)
)