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`timescale 1us/1us
`include "nandgame_types.v"
module arith_unit_tb;
logic [15:0] tst_in1;
logic [15:0] tst_in2;
ArithCode tst_opcode;
logic [15:0] tst_result;
arith_unit uut (
.X_in(tst_in1),
.Y_in(tst_in2),
.arith_operation_in(tst_opcode),
.result_out(tst_result)
);
string filename;
initial begin
`ifdef DUMP_FILE_NAME
filename=`DUMP_FILE_NAME;
`else
filename=" arith_unit.lxt2";
`endif
$dumpfile(filename); $dumpvars();
end
initial begin
tst_in1 = 13;
tst_in2 = 17;
tst_opcode = ARITH_PLUS;
#1
assert(tst_result == 30);
#1
tst_in1 = 12;
tst_in2 = 4;
tst_opcode = ARITH_MINUS;
#1
assert(tst_result == 8);
#1
tst_in1 = 12;
tst_in2 = 13;
tst_opcode = ARITH_MINUS;
#1
assert(tst_result == 16'hffff);
#1
tst_in1 = 13;
tst_in2 = 17;
tst_opcode = ARITH_INC;
#1
assert(tst_result == 14);
#1
tst_in1 = 13;
tst_in2 = 17;
tst_opcode = ARITH_DEC;
#1
assert(tst_result == 12);
#1
tst_in1 = 0;
tst_in2 = 17;
tst_opcode = ARITH_DEC;
#1
assert(tst_result == 16'hffff);
#1
$finish();
end
endmodule
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