lpm_counter1.bsf

altera epxa1的例子程序

/*
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) 1991-2001 Altera Corporation
Any megafunction design, and related net list (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, net list, 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,
net list, 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 80)
	(text "lpm_counter1" (rect 33 1 111 17)(font "Arial" (font_size 10)))
	(text "inst" (rect 8 64 23 76)(font "Arial" ))
	(port
		(pt 0 32)
		(input)
		(text "updown" (rect 0 0 40 14)(font "Arial" (font_size 8)))
		(text "updown" (rect 20 26 57 39)(font "Arial" (font_size 8)))
		(line (pt 0 32)(pt 16 32)(line_width 1))
	)
	(port
		(pt 0 48)
		(input)
		(text "clock" (rect 0 0 25 14)(font "Arial" (font_size 8)))
		(text "clock" (rect 26 42 49 55)(font "Arial" (font_size 8)))
		(line (pt 0 48)(pt 16 48)(line_width 1))
	)
	(port
		(pt 144 40)
		(output)
		(text "q[21..0]" (rect 0 0 36 14)(font "Arial" (font_size 8)))
		(text "q[21..0]" (rect 89 34 125 47)(font "Arial" (font_size 8)))
		(line (pt 144 40)(pt 128 40)(line_width 3))
	)
	(port
		(pt 144 56)
		(output)
		(text "cout" (rect 0 0 21 14)(font "Arial" (font_size 8)))
		(text "cout" (rect 104 50 124 63)(font "Arial" (font_size 8)))
		(line (pt 144 56)(pt 128 56)(line_width 1))
	)
	(drawing
		(text "up/down" (rect 94 17 128 29)(font "Arial" ))
		(line (pt 16 16)(pt 128 16)(line_width 1))
		(line (pt 128 16)(pt 128 64)(line_width 1))
		(line (pt 128 64)(pt 16 64)(line_width 1))
		(line (pt 16 64)(pt 16 16)(line_width 1))
		(line (pt 16 42)(pt 22 48)(line_width 1))
		(line (pt 22 48)(pt 16 54)(line_width 1))
	)
)