after get_ports) according to the top level signal names in the project ## 12 MHz System Clock set_property -dict { PACKAGE_PIN M9 IOSTANDARD LVCMOS33 } [get_ports { clk }]; #IO_L13P_T2_MRCC_14 Sch=gclk create_clock -add -name sys...
signalTEST1,TEST2:BIT:='1';--BUF_COMPcomponent declaration:componentBUF_COMPisgeneric(TIME_DELAY:TIME);port(IN1:inBIT;OUT1:outBIT);end component;begin--instantiationofBUF_COMPcomponent:DUT:BUF_COMPgenericmap(10ns)portmap(TEST1,TEST2);endSTRUCT_BUF_TEST;--Configuration specify the design entity...
门延迟可以在门单元例化时定义，定义格式如下：gate_type [delay] [instance_name] (signal_list) ...
“if a control signal on this register goes inactive at the same time as the clock signal triggers, which signal will be evaluated by the simulator first?” But the result was that different Verilog simulators might generate different results, which is always somewhat disconcerting to the end ...
type state_FSM is (Idle, start, calculate , finish, delay) -- define symbolic states to represent FSM states. signal current_state, next_state: state_FSM; VHDL 中的设计重用包 VHDL 中的包通常用于数据类型和子程序的声明。VHDL 包中声明的子程序或数据类型可用于许多不同的实体或体系结构。例如...
a continuous assignment,or indeed,any place where an expression may appear 6.if task statmemts inside can synthesys ===> task can synthesys if task statmemts inside can not synthesys ===> task can not synthesys task may have time or delay control 7....
final语句块不能含有delay、wait、non-blocking具有时序的语句; 56 如何检查句柄是否有对象 -检查该对象是否已初始化,在SV中,所有未初始化的对象句柄都具有null值 assert(obj == null); 57 旗语(semaphores)的作用是什么 58 always_ff、always_comb、always_latch的用途是什么 ...
2.1 全加器的设计 /***\ Filename : fulladd.v Author : Verilog_gruop Description : Example of a one-bit full add. Revision : 2000/02/29 Company : Verilog_group \***/module FULLADDR(Cout, Sum, Ain, Bin, Cin); input Ain, Bin, Cin; output Sum, Cout; wire Sum; wire assign Cout...
11,One of the key features of object-oriented programming is the ability to create new classes that are based on existing classes. A derived class by default inherits the properties and methods of its parent or base class. However, the derived class may add new properties and methods, or mo...
Rega=#u_dly0;//addunitdelay Regb=#u_dly0; End Elseif(Load_init) Begin Rega=#u_dlyinit_rega; Regb=#u_dlyinit_regb; End Else Begin Rega=#u_dlyRega1; Regb=#u_dlySt_1; End End//endRega,Regbassignment. 5.1.9CombinatorialVsSequentialLogic 1.如果一种事件持续几种时钟周期,设计时就...