代码: reg[data_width-1:0] in31_reg [0:depth-1];//genvar k1; // Error:procedural assignment to a non-register k1 is not permitted, left-hand side should be reg/integer/time/genvarintegerk1;generatealways@(posedgeclkornegedgerst_n)beginif(!rst_n)beginfor(k1=0;k1<depth;k1=k1+1)beg...
procedural_statement 是下列语句之一: procedural_assignment(blocking or non-blocking)//阻塞或非阻塞性过程赋值语句procedural_continuous_assignment conditional_statement case_statement loop_statement wait_statement disable_statement event_triggertask_enable(user or system) 例子如上产生一个信号波形: initial begin...
过程性赋值(Procedural assignment) 过程性赋值发生在过程(procedures)中,如always、initial、task和函数中,用于将值放到变量上。变量将保持该值,直到下一次对同一变量的赋值。 当仿真在仿真时间内的某一时刻执行该语句时,该值将被放到变量上。这可以通过使用控制流语句,如if-else-if、case语句和循环机制来控制和修改...
// Mux examples - Three ways to do the same thing.// The first example uses continuous assignmentwireout;assignout=sel?a:b;// the second example uses a procedure// to accomplish the same thing.regout;always@(aorborsel)begincase(sel)1'b0:out=b;1'b1:out=a;endcaseend// Finally - yo...
This allows us to place a continuous assignment on the same statement that declares the net. Note that because a net can be declared only once, only one declaration assignment is possible for a net. wirepenable=1; Procedural Continuous Assignment ...
Error: HDL Compiler : 1660 : Procedural assignment to a non-register big_mant is not permitted, left-hand side should be reg/integer/time/genvar, Continuous assignment verilog, Verilog: cannot be driven by primitives or continuous assignment, How to use
You can assign to a register (reg data type) the value of a net (wire), constant, another register, or a specific value. Example - Bad procedural assignment 1 module initial_bad(); 2 reg clk,reset; 3 wire enable,data; 4 5 initial begin 6 clk = 0; 7 reset = 0; 8 enable =...
连续赋值语句是 Verilog 数据流建模的基本语句,用于对 wire 型变量进行赋值。: assign LHS_target = RHS_expression ; LHS(left hand side) 指赋值操作的左侧,RHS(right hand side)指赋值操作的右侧。 assign 为关键词,任何已经声明 wire 变量的连续赋值语句都是以 assign 开头,例如: ...
non-blocking assignment :The non blocking procedural assignment allows assignment scheduling without blocking the procedural flow. The non blocking procedural assignment statement can be used whenever several variable assignments within the same time step can be made without regard to order or dependence ...
2. Procedural assignments procedural assignmentsandcontinuous assignments: Continuous :drive nets and are evaluated and updated whenever an input operand changes value. Procedural :Blocking and Nonblocking procedural assignment statements. 阻塞赋值:evaluates, schedules同一时刻一步执行。 非阻塞赋值:evaluates, sc...