diff options
Diffstat (limited to 'bench')
| -rw-r--r-- | bench/tb_modular_multiplier.v | 55 |
1 files changed, 33 insertions, 22 deletions
diff --git a/bench/tb_modular_multiplier.v b/bench/tb_modular_multiplier.v index c3de537..46e8790 100644 --- a/bench/tb_modular_multiplier.v +++ b/bench/tb_modular_multiplier.v @@ -48,6 +48,9 @@ module tb_modular_multiplier; // localparam A1 = 256'h216936d3_cd6e53fe_c0a4e231_fdd6dc5c_692cc760_9525a7b2_c9562d60_8f25d51a; // GX localparam B1 = 256'h66666666_66666666_66666666_66666666_66666666_66666666_66666666_66666658; // GY + localparam C1 = 256'h67875f0f_d78b7665_66ea4e8e_64abe37d_20f09f80_775152f5_6dde8ab3_a5b7dda3; // GT + + localparam F = 256'hFFFFFFFF_FFFFFFFF_FFFFFFFF_FFFFFFFF_FFFFFFFF_FFFFFFFF_FFFFFFFF_FFFFFFFF; // FFF...F // @@ -163,7 +166,9 @@ module tb_modular_multiplier; /* run tests */ $display("1. A1 * A1 = ..."); - test_modular_multiplier(A1, A1); + test_modular_multiplier(A1 , B1); + test_modular_multiplier(A1+B1, C1+C1); + test_modular_multiplier(F, F); /* print result */ if (ok) $display("tb_modular_multiplier: SUCCESS"); @@ -188,11 +193,16 @@ module tb_modular_multiplier; reg [255:0] b_shreg; reg [255:0] p_shreg; reg p_ok; - + reg [511:0] ab; + reg [255:0] p_ref; integer w; begin + /* calculate reference value */ + ab = {{256{1'b0}}, a} * {{256{1'b0}}, b}; + p_ref = ab % {{31{8'hFF}}, 8'hDA}; + /* initialize result */ p_ok = 0; @@ -241,28 +251,29 @@ module tb_modular_multiplier; /* wait for operation to complete */ while (!rdy) #`CLOCK_PERIOD; -// /* read result */ -// for (w=0; w<OPERAND_NUM_WORDS; w=w+1) begin -// -// /* set address */ -// tb_qxy_addr = w[WORD_COUNTER_WIDTH-1:0]; -// -// /* wait for 1 clock tick */ -// #10; -// -// /* store data word */ -// qx_shreg = {tb_qx_data, qx_shreg[255:32]}; -// qy_shreg = {tb_qy_data, qy_shreg[255:32]}; -// -// end -// -// /* compare */ -// q_ok = (qx_shreg == qx) && -// (qy_shreg == qy); -// + /* read result */ + for (w=0; w<OPERAND_NUM_WORDS; w=w+1) begin + + /* set address */ + tb_p_addr = w[WORD_COUNTER_WIDTH-1:0]; + + /* wait for 1 clock tick */ + #`CLOCK_PERIOD; + + /* store data word */ + p_shreg = {tb_p_data, p_shreg[255:32]}; + + end + + /* compare */ + p_ok = (p_shreg === p_ref); + /* display results */ if (p_ok) $display("test_modular_multiplier(): CORRECT RESULT"); - else $display("test_modular_multiplier(): WRONG RESULT"); + else begin + $display("test_modular_multiplier(): WRONG RESULT"); + $display("XOR: %x", p_shreg ^ p_ref); + end /* update global flag */ ok = ok & p_ok; |