Reset) CurrentState = S0; else CurrentState <= #u_dly NextState; always @(In1 or In2 or CurrentState) // output and state vector decode (combinational) case (CurrentState) S0: begin NextState <= #u_dly S1; Out1 <= #u_dly 1'b0; end S1: if (In1) begin NextState <= #u_...
在Verilog中，将计算结果赋值给一个内部的 `reg` 类型变量，然后再将这个变量赋值给 `wire` 类型的输...
Parameter S0=0,S1=1; always @(posedge Clk o r negedge Rst_) // state vector flip-flops (sequential) if (!Reset) CurrentState = S0; else CurrentState <= #u_dly NextState; always @(In1 or In2 or CurrentState) // output and state vector decode (combinational) case (CurrentState) ...
To start with, we will be learning the design of simple combinational circuits using Verilog followed by more complex circuits. As we progress further, we will be designing sequential circuits. In Chapter 4, we will see how to write effective test benches so that we may test the ...
unique & priority case unique & priority if unique0 (SystemVerilog-2009 enhancement) SystemVerilog enhancements to tasks & functions `timescale directive SystemVerilog timeunit & timeprecision * LABS: simple SystemVerilog combinational and sequential logic labs 3. ...
* LABS: simple SystemVerilog combinational and sequential logic labs * Multiple small synthesis examples SystemVerilog FSM Design Techniques - Six different FSM coding styles, enhanced with new SystemVerilog constructs, are detailed and compared for coding and synthesis efficiency. Multiple FSM designs ...
//statevectorflip-flops(sequential) if(!Reset) CurrentState=S0; else CurrentState=#u_dlyNextState; always@(In1orIn2orCurrentState) //outputandstatevectordecode(combinational) case(CurrentState) S0:begin NextState=#u_dlyS1; Out1=#u_dly1b0; ...
combinationallogicludesMstages ofadditionandonestageof multiplication 64 Thelongestsignalpath: CriticalPath 65 ThearchitectureofaFIR •Thearchitectureconsistsofashiftregister, multipliers,andaddersimplementinganMth-order FIR •Thedatapathsmustbewideenoughto ...
The concept of Blocking vs. Nonblocking signal assignments is a unique one to hardware description languages. The main reason to use either Blocking or Nonblocking assignments is to generate either combinational or sequential logic. In software, all assignments work one at a time. So for example ...
// Sequential state transition always_ff @(posedge clk or negedge rst_n) if (!rst_n) state <= IDLE; else state <= next; // Combinational next state logic always_comb begin next = SX; unique case (state) IDLE : begin if (go) ...