2026-05-29 10:19:13 +02:00

38 lines
1.4 KiB
Systemverilog

// *********************************************************************************************
// Project Version : v1.0
// Project : [BCDC] Microtec Academy Course: Building a RISC-V CPU with SystemVerilog
// -----
// Copyright (c) : 2025 Fraunhofer IIS, Department IDS
// Created : 12.Jun.2025 by Lund University [commit 5b1e415]
// Last Modified : 23.Oct.2025 by Bomin Kim [commit 2f8f03d]
// -----
// HISTORY : Date By Comments
// ----------- --------- -------------------------------------------------
// 15.Oct.2025 Bomin Kim Moved NextPC logic from decoder into PC
// 15.Oct.2025 Bomin Kim Removed reset condition from combinational logic
// *********************************************************************************************
module pc (
output logic[31:0] CurrentPC,
input logic[31:0] JumpOrBranchPC,
input logic JumpOrBranch,
output logic[31:0] NextPC,
input logic reset,
input logic clk
);
// NextPC logic; next-state function
always_comb begin : Next_PC
if (JumpOrBranch) NextPC = JumpOrBranchPC;
else NextPC = CurrentPC + 4;
end
// CurrentPC logic; state register
always_ff @(posedge clk) begin
if (reset) CurrentPC <= '0;
else CurrentPC <= NextPC;
end
endmodule