diff options
Diffstat (limited to 'verilog/fpu/fpu_bench.v')
-rw-r--r-- | verilog/fpu/fpu_bench.v | 69 |
1 files changed, 47 insertions, 22 deletions
diff --git a/verilog/fpu/fpu_bench.v b/verilog/fpu/fpu_bench.v index ecbd659..2c54c8c 100644 --- a/verilog/fpu/fpu_bench.v +++ b/verilog/fpu/fpu_bench.v @@ -4,6 +4,7 @@ module fpu_bench; +reg[63:0] float1, float2, float_out; reg[31:0] input1, input2; reg add = 1'b0; wire[31:0] fpu_output; @@ -12,47 +13,71 @@ fpu_2 fpu0 (add,input1, input2, fpu_output); initial begin - input1=32'b01000000000111001100110011001101; // 2.45 - input2=32'b00111111001001100110011001100110; //.65 + input1=32'b01000011000111001100110011001101; // 2.45 + input2=32'b00111001001001100110011001100110; //.65 #5; - $display("\nSum: %16b + %16b = %16b",input1,input2,fpu_output); + float1={input1[31],input1[30],{3{~input1[30]}},input1[29:23],input1[22:0], {29{1'b0}}}; + float2={input2[31],input2[30],{3{~input2[30]}},input2[29:23],input2[22:0], {29{1'b0}}}; + float_out={fpu_output[31],fpu_output[30],{3{~fpu_output[30]}},fpu_output[29:23],fpu_output[22:0], {29{1'b0}}}; + $display("\nSum: %f + %f = %f", $bitstoreal(float1),$bitstoreal(float2), $bitstoreal(float_out)); - input1=32'b01000000000111001100110011001101; // 2.45 - input2=32'b10111111001001100110011001100110; //.65 + input1=32'b01000100000111001110111011001101; // 2.45 + input2=32'b10111111001000100110011001100110; //.65 #5; - $display("\nSum: %16b + %16b = %16b",input1,input2,fpu_output); + float1={input1[31],input1[30],{3{~input1[30]}},input1[29:23],input1[22:0], {29{1'b0}}}; + float2={input2[31],input2[30],{3{~input2[30]}},input2[29:23],input2[22:0], {29{1'b0}}}; + float_out={fpu_output[31],fpu_output[30],{3{~fpu_output[30]}},fpu_output[29:23],fpu_output[22:0], {29{1'b0}}}; + $display("\nSum: %f + %f = %f", $bitstoreal(float1),$bitstoreal(float2), $bitstoreal(float_out)); - input1=32'b11000000000111001100110011001101; // 2.45 + input1=32'b11000110000111001100110110001101; // 2.45 input2=32'b00111111001001100110011001100110; //.65 #5; - $display("\nSum: %16b + %16b = %16b",input1,input2,fpu_output); + float1={input1[31],input1[30],{3{~input1[30]}},input1[29:23],input1[22:0], {29{1'b0}}}; + float2={input2[31],input2[30],{3{~input2[30]}},input2[29:23],input2[22:0], {29{1'b0}}}; + float_out={fpu_output[31],fpu_output[30],{3{~fpu_output[30]}},fpu_output[29:23],fpu_output[22:0], {29{1'b0}}}; + $display("\nSum: %f + %f = %f", $bitstoreal(float1),$bitstoreal(float2), $bitstoreal(float_out)); - input1=32'b11000000000111001100110011001101; // 2.45 - input2=32'b10111111001001100110011001100110; //.65 + input1=32'b10111111000111001100110011001101; // 2.45 + input2=32'b11000011001001100110001001100110; //.65 #5; - $display("\nSum: %16b + %16b = %16b",input1,input2,fpu_output); + float1={input1[31],input1[30],{3{~input1[30]}},input1[29:23],input1[22:0], {29{1'b0}}}; + float2={input2[31],input2[30],{3{~input2[30]}},input2[29:23],input2[22:0], {29{1'b0}}}; + float_out={fpu_output[31],fpu_output[30],{3{~fpu_output[30]}},fpu_output[29:23],fpu_output[22:0], {29{1'b0}}}; + $display("\nSum: %f + %f = %f", $bitstoreal(float1),$bitstoreal(float2), $bitstoreal(float_out)); add = 1'b1; - input1=32'b01000000000111001100110011001101; // 2.45 - input2=32'b00111111001001100110011001100110; //.65 + input1=32'b01000011000111001100110011001101; // 2.45 + input2=32'b00111001001001100110011001100110; //.65 #5; - $display("\nSum: %16b - %16b = %16b",input1,input2,fpu_output); + float1={input1[31],input1[30],{3{~input1[30]}},input1[29:23],input1[22:0], {29{1'b0}}}; + float2={input2[31],input2[30],{3{~input2[30]}},input2[29:23],input2[22:0], {29{1'b0}}}; + float_out={fpu_output[31],fpu_output[30],{3{~fpu_output[30]}},fpu_output[29:23],fpu_output[22:0], {29{1'b0}}}; + $display("\nSum: %f - %f = %f", $bitstoreal(float1),$bitstoreal(float2), $bitstoreal(float_out)); - input1=32'b01000000000111001100110011001101; // 2.45 - input2=32'b10111111001001100110011001100110; //.65 + input1=32'b01000100000111001110111011001101; // 2.45 + input2=32'b10111111001000100110011001100110; //.65 #5; - $display("\nSum: %16b - %16b = %16b",input1,input2,fpu_output); + float1={input1[31],input1[30],{3{~input1[30]}},input1[29:23],input1[22:0], {29{1'b0}}}; + float2={input2[31],input2[30],{3{~input2[30]}},input2[29:23],input2[22:0], {29{1'b0}}}; + float_out={fpu_output[31],fpu_output[30],{3{~fpu_output[30]}},fpu_output[29:23],fpu_output[22:0], {29{1'b0}}}; + $display("\nSum: %f - %f = %f", $bitstoreal(float1),$bitstoreal(float2), $bitstoreal(float_out)); - input1=32'b11000000000111001100110011001101; // 2.45 + input1=32'b11000110000111001100110110001101; // 2.45 input2=32'b00111111001001100110011001100110; //.65 #5; - $display("\nSum: %16b - %16b = %16b",input1,input2,fpu_output); + float1={input1[31],input1[30],{3{~input1[30]}},input1[29:23],input1[22:0], {29{1'b0}}}; + float2={input2[31],input2[30],{3{~input2[30]}},input2[29:23],input2[22:0], {29{1'b0}}}; + float_out={fpu_output[31],fpu_output[30],{3{~fpu_output[30]}},fpu_output[29:23],fpu_output[22:0], {29{1'b0}}}; + $display("\nSum: %f - %f = %f", $bitstoreal(float1),$bitstoreal(float2), $bitstoreal(float_out)); - input1=32'b11000000000111001100110011001101; // 2.45 - input2=32'b10111111001001100110011001100110; //.65 + input1=32'b10111111000111001100110011001101; // 2.45 + input2=32'b11000011001001100110001001100110; //.65 #5; - $display("\nSum: %16b - %16b = %16b",input1,input2,fpu_output); + float1={input1[31],input1[30],{3{~input1[30]}},input1[29:23],input1[22:0], {29{1'b0}}}; + float2={input2[31],input2[30],{3{~input2[30]}},input2[29:23],input2[22:0], {29{1'b0}}}; + float_out={fpu_output[31],fpu_output[30],{3{~fpu_output[30]}},fpu_output[29:23],fpu_output[22:0], {29{1'b0}}}; + $display("\nSum: %f - %f = %f", $bitstoreal(float1),$bitstoreal(float2), $bitstoreal(float_out)); $finish; end endmodule |