dataMem.v

/* The data memory module (dataMem.v) is used for load word and store word operations (Type-B). This module behaves as main memory in the 
   cpu design, capable of writing data to the memory block in the given location (address) and also capable of reading data from memory
   in the given location (address).
*/
module dataMem(clk, rst, addr, rdData, wrData, memRead, memWrite);
	// Variables
	parameter storSize = (1 << 15);
	integer n;
	// Input ports
	input clk, rst;
	input [15:0] wrData;
	input [15:0] addr;
	input memRead, memWrite;
	// Output ports
	output [15:0] rdData;
	reg [15:0] locn [storSize-1:0];
	
	always@(posedge clk or negedge rst)
	begin
		if(!rst)
		begin
			for(n=0; n<storSize; n=n+1)
			begin
				locn[n]<=n==0?16'h2BC:{16{1'b0}};
			end
		end
		else
		begin
			if(memWrite)
			begin
				locn[addr] <=wrData;
			end
		end
	end
	assign rdData = (memRead)? locn[addr]:{16{1'bz}};
endmodule