lpm_counter1.bsf

很好的一个东西,希望能对大家有所帮助.关于PWM的编程.

/*
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) 1991-2007 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 0 0 144 128)
	(text "lpm_counter1" (rect 33 1 125 17)(font "Arial" (font_size 10)))
	(text "inst" (rect 8 112 25 124)(font "Arial" ))
	(port
		(pt 0 32)
		(input)
		(text "sclr" (rect 0 0 21 14)(font "Arial" (font_size 8)))
		(text "sclr" (rect 20 26 35 39)(font "Arial" (font_size 8)))
		(line (pt 0 32)(pt 16 32)(line_width 1))
	)
	(port
		(pt 0 48)
		(input)
		(text "sload" (rect 0 0 30 14)(font "Arial" (font_size 8)))
		(text "sload" (rect 20 42 45 55)(font "Arial" (font_size 8)))
		(line (pt 0 48)(pt 16 48)(line_width 1))
	)
	(port
		(pt 0 64)
		(input)
		(text "data[4..0]" (rect 0 0 53 14)(font "Arial" (font_size 8)))
		(text "data[4..0]" (rect 20 58 65 71)(font "Arial" (font_size 8)))
		(line (pt 0 64)(pt 16 64)(line_width 3))
	)
	(port
		(pt 0 96)
		(input)
		(text "clock" (rect 0 0 29 14)(font "Arial" (font_size 8)))
		(text "clock" (rect 26 90 49 103)(font "Arial" (font_size 8)))
		(line (pt 0 96)(pt 16 96)(line_width 1))
	)
	(port
		(pt 144 72)
		(output)
		(text "q[4..0]" (rect 0 0 35 14)(font "Arial" (font_size 8)))
		(text "q[4..0]" (rect 95 66 125 79)(font "Arial" (font_size 8)))
		(line (pt 144 72)(pt 128 72)(line_width 3))
	)
	(drawing
		(text "up counter" (rect 84 17 128 29)(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 90)(pt 22 96)(line_width 1))
		(line (pt 22 96)(pt 16 102)(line_width 1))
	)
)