KGPminiRISC/JumpControl.v at cf2e4e3a9f15e146b71b134f58cccfb7234911ce · Yashraj-10/KGPminiRISC · GitHub

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`timescale 1ns / 1ps
//////////////////////////////////////////////////////////////////////////////////
// Company:
// Engineer:
//
// Create Date:    12:26:40 11/04/2022
// Design Name:
// Module Name:    JumpControl
// Project Name:
// Target Devices:
// Tool versions:
// Description:
//
// Dependencies:
//
// Revision:
// Revision 0.01 - File Created
// Additional Comments:
//
//////////////////////////////////////////////////////////////////////////////////
module JumpControl(
	input [2:0] flag,					// flag = [2-sign,1-zero,0-carry]
	input [2:0] CondJump,
	output reg [0:0] JCout
    );

	always@(*)
		begin
			case(CondJump)
				3'b000:							// not a branch on flag statement
					begin
						JCout <= 1'b0;
					end
				3'b001:							// bltz
					begin
						if(flag[2])
							JCout <= 1'b1;
						else
							JCout <= 1'b0;
					end
				3'b010:							// bz
					begin
						if(flag[1])
							JCout <= 1'b1;
						else
							JCout <= 1'b0;
					end
				3'b011:							// bnz
					begin
						if(flag[1])
							JCout <= 1'b0;
						else
							JCout <= 1'b1;
					end
				3'b100:							// bcy
					begin
						if(flag[0])
							JCout <= 1'b1;
						else
							JCout <= 1'b0;
					end
				3'b101:							// bncy
					begin
						if(flag[0])
							JCout <= 1'b0;
						else
							JCout <= 1'b1;
					end
				default:							// default ---> UncondJump shouldn't happen
					begin
						JCout <= 1'b0;
					end
			endcase
		end

endmodule