module REGS(bufferIn,IR,MAR,MDR,MAR_in,MDR_in,MDR_out,IR_in,reg0_in,reg1_in,reg2_in,reg3_in,reg0_out,reg1_out,reg2_out,reg3_out,out);

input wire [15:0] bufferIn;
output reg [15:0] out;
// Input buffer and output for buffer

// Declare
reg [15:0] reg0 = 0;
reg [15:0] reg1 = 0;
reg [15:0] reg2 = 0;
reg [15:0] reg3 = 0;
registers

output reg [15:0] MAR = 0;
output reg [15:0] MDR = 0;
output reg [15:0] IR = 0;
// Registers for MDR and MAR

input wire MAR_in,MDR_in,MDR_out,IR_in,reg0_in,reg1_in,reg2_in,reg3_in,reg0_out,reg1_out,reg2_out,reg3_out;
// input control wires

/* IR */
always @(posedge IR_in)
IR = bufferIn;
// buffer for setting input

/* MAR */
always @(posedge MAR_in)
MAR = bufferIn;
// buffer for setting input

/* MDR */
always @(posedge MDR_in)
MDR = bufferIn;
// buffer for setting input

always @(MDR_out)
assign out = MDR_out?MDR:16'bz;
// Tri-State buffer for sending output when output is enabled or else 16'bz

/* REGISTERS */
//reg0
always @(posedge reg0_in)
reg0 = bufferIn;

always @(reg0_out)
assign out = reg0_out?reg0:16'bz;

//reg1
always @(posedge reg1_in)
reg1 = bufferIn;

always @(reg1_out)
assign out = reg1_out?reg1:16'bz;

//reg2
always @(posedge reg2_in)
reg2 = bufferIn;

always @(reg2_out)
assign out = reg2_out?reg2:16'bz;

//reg3
always @(posedge reg3_in)
reg3 = bufferIn;

always @(reg3_out)
assign out = reg3_out?reg3:16'bz;

endmodule