new_duty.bdf

这是一个定时比较器

/*
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.
*/
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(text "比较器是在光栅尺来的数据接近原数据时比较二者值，当光栅尺数据小于原值时使y1＝1，相等时y2＝1，大于时y3＝1" (rect 88 288 817 302)(font "Arial" (font_size 8)))
(text "计数器当y1＝1时，将原占空比值增大，y2＝1时占空比值不变，y3＝1时原占空比减少，统一写给new—duty" (rect 88 304 753 318)(font "Arial" (font_size 8)))
(text "en为低电平时将原占空比值写入，为高电平时将前一占空比值写入" (rect 88 272 498 286)(font "Arial" (font_size 8)))