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5 changed files with 34 additions and 30 deletions

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+4
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@@ -0,0 +1,4 @@
start_full_compilation:s
start_assembler:s-start_full_compilation
start_timing_analyzer:s-start_full_compilation
start_eda_netlist_writer:s-start_full_compilation
+14
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@@ -0,0 +1,14 @@
`include "rom.sv"
module ByteIM #(parameter m=5,n=2) (
input logic [m-1:0] Ad,
output logic [(2**n)*8-1:0] Dout );
// 2**n byte wide words
// m bit wide byte address
// 2**m bytes of memory
// 2**(m-n) memory words
// 2**(n+3) bit wide words
// Reads the whole word that contains the addressed byte
ROM #(m-n,2**(n+3)) wordrom(Ad[m-1:n],Dout)
endmodule
-18
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@@ -3,31 +3,19 @@
`include "asu.sv"
`include "lu.sv"
`include "seven_seg.sv"
// flags[0:0] = Cout
// flags[1:1] = Overflow
module alu #(parameter width=2)(input logic [3:0] op,
input logic [2**width-1:0] A, input logic [2**width-1:0] B,
output logic [2**width-1:0] OUT_1, output logic[1:0] flags
`ifdef SYNTHESIS
, output logic [7:0] out_seg1);
`else
);
`endif
// intermediate logic for handling asu output
logic [0:0] asu_op;
logic [2**width-1:0] asu_out;
logic [1:0] asu_flags;
logic [7:0] asu_seven_seg_out;
// NOTE: For demo only
// TODO: Strip this for assignment 2
`ifdef SYNTHESIS
asu #(width) adder_unit(asu_op[op[1]], A, B, asu_out, asu_flags[0], asu_flags[1], asu_seven_seg_out);
`else
asu #(width) adder_unit(asu_op[op[1]], A, B, asu_out, asu_flags[0], asu_flags[1]);
`endif
logic [2**width-1:0] lu_out;
lu #(width) logic_unit(op[1:0], A, B, lu_out);
@@ -47,11 +35,5 @@ module alu #(parameter width=2)(input logic [3:0] op,
default: begin OUT_1 = {(2**width){1'b0}}; flags = asu_flags; end
endcase
end
// NOTE: For demo only
// TODO: Strip this for assignment 2
`ifdef SYNTHESIS
seven_seg dut(OUT_1, 1'b1, out_seg1);
`endif
endmodule
`endif
+1 -12
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@@ -1,20 +1,14 @@
`ifndef ASU_H_SV
`define ASU_H_SV
`include "seven_seg.sv"
module asu #(parameter width = 2)(
input logic [0:0] op,
input logic[2**width-1:0] A, input logic[2**width-1:0] B,
output logic[2**width-1:0] OUT_1, output logic[0:0] COUT, output logic[0:0] OUT_CIN
// Used to switch between demo mode and testbench mode
// TODO: Strip for assignment 2
`ifdef SYNTHESIS
, output logic[7:0] out_seg_1);
`else
);
`endif
logic [2**width-1:0] operand;
always_comb begin
// A + (sub) ? B : -B
// Adds an extra bit to all operands to calculate the carry bit. Not optimal for hardware synthesis
@@ -27,10 +21,5 @@ module asu #(parameter width = 2)(
// Cin for final bit in adder to later be xor'ed with COUT to determine if a signed overflow occured for the MIPS architecture
assign OUT_CIN = A[2**width-1] ^ operand[2**width-1] ^ OUT_1[2**width-1];
// Include seven segment visual output for hardware builds only
// TODO: Strip this for assignment 2 outright
`ifdef SYNTHESIS
seven_seg dut(OUT_1, 1'b1, out_seg_1);
`endif
endmodule
`endif
+15
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@@ -0,0 +1,15 @@
module ROM #(parameter m=7,p=4) (
input logic [m-1:0] Ad,
output logic [p-1:0] Dout
);
logic [p-1:0] mem[2**m-1:0];
assign Dout = mem[Ad];
//Load the program in memory
// The machine code stored in text file program.dat written in Hex format
initial begin
$readmemh("program.dat",mem); //$readmemb for binary
end
endmodule // end ROM module