本文简单探讨了verilog HDL设计中的可综合性问题,适合HDL初学者阅读 用组合逻辑实现的电路和用时序逻辑实现的 电路要分配到不同的进程中。 不要使用枚举类型的属性。 INTEGER应加范围限制。 通常的可综合代码应该是同步设计。 避免门级描述,除非在关键路径中。
上传时间: 2013-11-18
上传用户:swaylong
各种功能的计数器实例(VHDL源代码):ENTITY counters IS PORT ( d : IN INTEGER RANGE 0 TO 255; clk : IN BIT; clear : IN BIT; ld : IN BIT; enable : IN BIT; up_down : IN BIT; qa : OUT INTEGER RANGE 0 TO 255; qb : OUT INTEGER RANGE 0 TO 255; qc : OUT INTEGER RANGE 0 TO 255; qd : OUT INTEGER RANGE 0 TO 255; qe : OUT INTEGER RANGE 0 TO 255; qf : OUT INTEGER RANGE 0 TO 255; qg : OUT INTEGER RANGE 0 TO 255; qh : OUT INTEGER RANGE 0 TO 255; qi : OUT INTEGER RANGE 0 TO 255;
上传时间: 2013-10-09
上传用户:松毓336
Tug of War(A tug of war is to be arranged at the local office picnic. For the tug of war, the picnickers must be divided into two teams. Each person must be on one team or the other the number of people on the two teams must not differ by more than 1 the total weight of the people on each team should be as nearly equal as possible. The first line of input contains n the number of people at the picnic. n lines follow. The first line gives the weight of person 1 the second the weight of person 2 and so on. Each weight is an INTEGER between 1 and 450. There are at most 100 people at the picnic. Your output will be a single line containing 2 numbers: the total weight of the people on one team, and the total weight of the people on the other team. If these numbers differ, give the lesser first. )
上传时间: 2014-01-06
上传用户:离殇
物流分析工具包。Facility location: Continuous minisum facility location, alternate location-allocation (ALA) procedure, discrete uncapacitated facility location Vehicle routing: VRP, VRP with time windows, traveling salesman problem (TSP) Networks: Shortest path, min cost network flow, minimum spanning tree problems Geocoding: U.S. city or ZIP code to longitude and latitude, longitude and latitude to nearest city, Mercator projection plotting Layout: Steepest descent pairwise interchange (SDPI) heuristic for QAP Material handling: Equipment selection General purpose: Linear programming using the revised simplex method, mixed-INTEGER linear programming (MILP) branch and bound procedure Data: U.S. cities with populations of at least 10,000, U.S. highway network (Oak Ridge National Highway Network), U.S. 3- and 5-digit ZIP codes
标签: location location-allocation Continuous alternate
上传时间: 2015-05-16
上传用户:kikye
unit Other interface Uses Windows,tlhelp32,PsAPI type PStrData = ^TStrData TStrData = record Ident: INTEGER Str: string end TUseInfo=record QQ, Mail, Page:string DL:boolean end TSendMailInfo=record IPAddress, FAddress, FName, FPW, FCName, FCPW:string //发信邮箱检证用户密码 end { FloatToText, FloatToTextFmt, TextToFloat, and FloatToDecimal type codes }
标签: TStrData interface PStrData Windows
上传时间: 2014-12-22
上传用户:asddsd
数字运算,判断一个数是否接近素数 A Niven number is a number such that the sum of its digits divides itself. For example, 111 is a Niven number because the sum of its digits is 3, which divides 111. We can also specify a number in another base b, and a number in base b is a Niven number if the sum of its digits divides its value. Given b (2 <= b <= 10) and a number in base b, determine whether it is a Niven number or not. Input Each line of input contains the base b, followed by a string of digits representing a positive INTEGER in that base. There are no leading zeroes. The input is terminated by a line consisting of 0 alone. Output For each case, print "yes" on a line if the given number is a Niven number, and "no" otherwise. Sample Input 10 111 2 110 10 123 6 1000 8 2314 0 Sample Output yes yes no yes no
上传时间: 2015-05-21
上传用户:daguda
The Audio File Library provides a uniform programming interface to standard digital audio file formats. This library allows the processing of audio data to and from audio files of many common formats (currently AIFF, AIFF-C, WAVE, NeXT/Sun .snd/.au, IRCAM, AVR, Amiga IFF/8SVX, and NIST SPHERE). The library also supports compression (currently G.711 mu-law and A-law and IMA and MS ADPCM) as well as PCM formats of all flavors (signed and unsigned INTEGER, single- and double-precision floating point).
标签: programming interface provides standard
上传时间: 2014-12-06
上传用户:a6697238
Evaluate a sequence of Bessel functions of the first and second kinds and their derivatives with INTEGER orders and real arguments
标签: derivatives functions and Evaluate
上传时间: 2015-05-27
上传用户:685
2^x mod n = 1 acm竞赛题 Give a number n, find the minimum x that satisfies 2^x mod n = 1. Input One positive INTEGER on each line, the value of n. Output If the minimum x exists, print a line with 2^x mod n = 1. Print 2^? mod n = 1 otherwise. You should replace x and n with specific numbers. Sample Input 2 5 Sample Output 2^? mod 2 = 1 2^4 mod 5 = 1
标签: mod satisfies minimum number
上传时间: 2015-06-02
上传用户:qlpqlq
Routine mar1psd: To compute the power spectum by AR-model parameters. Input parameters: ip : AR model order (INTEGER) ep : White noise variance of model input (real) ts : Sample interval in seconds (real) a : Complex array of AR parameters a(0) to a(ip) Output parameters: psdr : Real array of power spectral density values psdi : Real work array in chapter 12
标签: parameters AR-model Routine mar1psd
上传时间: 2015-06-08
上传用户:playboys0