•Verilog中主要有两种数据类型:变量(variable)和线网(net)。这两种数据类型的区别在于它们的赋值和保持方式,它们代表了不同的硬件结构。 •线网用于逻辑门之间的连接,一般线网的值由driver决定(不能保存值),如果没有driver驱动,那么线网的值是z(高阻态)。在coding时一般只会用到wire变量,用于逻辑门的驱动或...
zero,data,accum,alu_clk,opcode);output[7:0] alu_out;outputzero;input[2:0] opcode;input[7:0] data,accum;inputalu_clk;reg[7:0] alu_out;parameterHLT=3'b000,//暂停指令,将操作数accum
vsim testcounter_opt -debugdb 4set WildcardFilter "Variable Constant Generic Parameter SpecParam Memory Assertion Endpoint ImmediateAssert" With this command, youremove “CellInternal”from the default list of Wildcard filters. This allows all signals in cells to be logged by the simulator so they...
$fsdbDumpon ; End Stopping and resuming the dump ($dumpoff/$dumpon) fsdbDumplimit - 限制 FSDB 文件 size -- $fsdbDumpvars([], *) fsdbDumpfile - 指定 FSDB 文件名 -- $fsdbDumpfile( “”) fsdbDumpvars - Dump 指定的变量 -- fsdbDumpSingle - Dump 指定的信号 fsdbDumpvariable - Dump ...
Constant class properties Abstract classes and virtual methods Class scope resolution operator :: Parameterized classes Objects A class defines a data type. An object is an instance of that class. An object is used by first declaring a variable of that class type (that holds an object handle)...
constant class members Class properties can be made read-only by a const declaration like any other SystemVerilog variable. However, because class objects are dynamic objects, class properties allow two forms of read-only variables, global constants and instance constants....
Variable Declarations Example Initial Values Assigning an Initial Value to a Register Initial Values Example One Initial Values Example Two Arrays of Reg and Wire Arrays Example One Arrays Example Two Multi-Dimensional Arrays Multi-Dimensional Array Example One Multi-Dimensional Array Examp...
Basically the model calculates the polarization (also the name of the variable) for an applied voltage V(p,n). The current is proportional to the time derivative of the polarization. I drew a sketch that hopefully helps but I'm not sure how much it will help without re...
( value, td, tt ); end endmodule 8-Bit Digital-to-Analog Converter Example of a N-bit ADC [above graphic - left]: The bus is accessed in a for loop, containing a transition filter, so the loop iterator index i must be a generate variable. Example of a N-bit DAC [above graphic...
Module declarations are templates for creating actual objects. Modules are instantiated inside other modules, and each instantiation is creating a single object from that template. The exception is the top-level module which is its own instantiation. The modules ports must to be matched to those wh...