lpm_shiftreg0.bsf

主要完成数字电视前端信号处理和缓冲作用的verilog源代码

/*
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) 1991-2004 Altera Corporation
Any  megafunction  design,  and related netlist (encrypted  or  decrypted),
support information,  device programming or simulation file,  and any other
associated  documentation or information  provided by  Altera  or a partner
under  Altera's   Megafunction   Partnership   Program  may  be  used  only
to program  PLD  devices (but not masked  PLD  devices) from  Altera.   Any
other  use  of such  megafunction  design,  netlist,  support  information,
device programming or simulation file,  or any other  related documentation
or information  is prohibited  for  any  other purpose,  including, but not
limited to  modification,  reverse engineering,  de-compiling, or use  with
any other  silicon devices,  unless such use is  explicitly  licensed under
a separate agreement with  Altera  or a megafunction partner.  Title to the
intellectual property,  including patents,  copyrights,  trademarks,  trade
secrets,  or maskworks,  embodied in any such megafunction design, netlist,
support  information,  device programming or simulation file,  or any other
related documentation or information provided by  Altera  or a megafunction
partner, remains with Altera, the megafunction partner, or their respective
licensors. No other licenses, including any licenses needed under any third
party's intellectual property, are provided herein.
*/
(header "symbol" (version "1.1"))
(symbol
	(rect 0 0 144 128)
	(text "lpm_shiftreg0" (rect 34 1 124 17)(font "Arial" (font_size 10)))
	(text "inst" (rect 8 112 25 124)(font "Arial" ))
	(port
		(pt 0 32)
		(input)
		(text "clock" (rect 0 0 29 14)(font "Arial" (font_size 8)))
		(text "clock" (rect 26 26 49 39)(font "Arial" (font_size 8)))
		(line (pt 0 32)(pt 16 32)(line_width 1))
	)
	(port
		(pt 0 48)
		(input)
		(text "shiftin" (rect 0 0 34 14)(font "Arial" (font_size 8)))
		(text "shiftin" (rect 20 42 48 55)(font "Arial" (font_size 8)))
		(line (pt 0 48)(pt 16 48)(line_width 1))
	)
	(port
		(pt 112 128)
		(input)
		(text "aset" (rect 0 0 14 24)(font "Arial" (font_size 8))(vertical))
		(text "aset" (rect 105 89 118 108)(font "Arial" (font_size 8))(vertical))
		(line (pt 112 128)(pt 112 112)(line_width 1))
	)
	(port
		(pt 144 56)
		(output)
		(text "shiftout" (rect 0 0 42 14)(font "Arial" (font_size 8)))
		(text "shiftout" (rect 89 50 123 63)(font "Arial" (font_size 8)))
		(line (pt 144 56)(pt 128 56)(line_width 1))
	)
	(port
		(pt 144 72)
		(output)
		(text "q[3..0]" (rect 0 0 35 14)(font "Arial" (font_size 8)))
		(text "q[3..0]" (rect 95 66 125 79)(font "Arial" (font_size 8)))
		(line (pt 144 72)(pt 128 72)(line_width 3))
	)
	(drawing
		(text "right shift" (rect 88 17 128 29)(font "Arial" ))
		(text "aset 1" (rect 102 27 128 39)(font "Arial" ))
		(line (pt 16 16)(pt 128 16)(line_width 1))
		(line (pt 128 16)(pt 128 112)(line_width 1))
		(line (pt 128 112)(pt 16 112)(line_width 1))
		(line (pt 16 112)(pt 16 16)(line_width 1))
		(line (pt 16 26)(pt 22 32)(line_width 1))
		(line (pt 22 32)(pt 16 38)(line_width 1))
	)
)