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FDIV and FSQRT passes when simulating in modelsim

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This commit is contained in:
Katherine Parry 2021-07-18 23:00:04 -04:00
parent 2a33526f8e
commit c9180f4ebd
5 changed files with 207 additions and 141 deletions
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1
wally-pipelined/src/fpu/fpdiv.sv
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@ -91,6 +91,7 @@ module fpdiv (
wire load_regrv, load_regs;
logic exp_cout1, exp_cout2;
logic exp_odd, open;
// logic reset;
// Convert the input operands to their appropriate forms based on
// the orignal operands, the op_type , and their precision P.

6
wally-pipelined/src/fpu/fsm.sv
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@ -8,7 +8,7 @@ module fsm (done, load_rega, load_regb, load_regc,
input start;
// input error;
input op_type;
//***can use divbusy insted of holdinputs
output done;
output load_rega;
output load_regb;
@ -81,7 +81,7 @@ module fsm (done, load_rega, load_regb, load_regc,
begin
done = 1'b0;
divBusy = 1'b1;
holdInputs = 1'b1;
holdInputs = 1'b1;
load_rega = 1'b0;
load_regb = 1'b1;
load_regc = 1'b0;
@ -97,7 +97,7 @@ module fsm (done, load_rega, load_regb, load_regc,
begin
done = 1'b0;
divBusy = 1'b1;
holdInputs = 1'b1;
holdInputs = 1'b1;
load_rega = 1'b0;
load_regb = 1'b1;
load_regc = 1'b0;

11
wally-pipelined/src/fpu/sbtm2.sv
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@ -1,4 +1,3 @@
module sbtm2 (input logic [11:0] a, output logic [10:0] y);
// bit partitions
@ -7,7 +6,7 @@ module sbtm2 (input logic [11:0] a, output logic [10:0] y);
logic [3:0] x2;
logic [2:0] x2_1cmp;
// mem outputs
logic [12:0] y0;
logic [13:0] y0;
logic [5:0] y1;
// input to CPA
logic [14:0] op1;
@ -19,8 +18,8 @@ module sbtm2 (input logic [11:0] a, output logic [10:0] y);
assign x1 = a[6:4];
assign x2 = a[3:0];
sbtm_a2 mem1 ({x0[3:0], x1}, y0);
assign op1 = {1'b0, y0, 1'b0};
sbtm_a2 mem1 ({x0, x1}, y0);
assign op1 = {y0, 1'b0};
// 1s cmp per sbtm/stam
assign x2_1cmp = x2[3] ? ~x2[2:0] : x2[2:0];
@ -30,10 +29,12 @@ module sbtm2 (input logic [11:0] a, output logic [10:0] y);
{8'b0, y1, 1'b1};
// CPA
bk15 cp1 (cout, p, op1, op2, 1'b0);
//adder #(15) cp1 (op1, op2, 1'b0, p, cout);
assign {cout, p} = op1 + op2;
assign y = p[14:4];
endmodule // sbtm2

326
wally-pipelined/src/fpu/sbtm_a2.sv
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@ -1,136 +1,200 @@
module sbtm_a2 (input logic [6:0] a,
output logic [12:0] y);
module sbtm_a2 (input logic [7:0] a,
output logic [13:0] y);
always_comb
case(a)
7'b0000000: y = 13'b1111111110001;
7'b0000001: y = 13'b1111111010001;
7'b0000010: y = 13'b1111110110010;
7'b0000011: y = 13'b1111110010011;
7'b0000100: y = 13'b1111101110101;
7'b0000101: y = 13'b1111101010110;
7'b0000110: y = 13'b1111100111001;
7'b0000111: y = 13'b1111100011011;
7'b0001000: y = 13'b1111011111110;
7'b0001001: y = 13'b1111011100001;
7'b0001010: y = 13'b1111011000100;
7'b0001011: y = 13'b1111010101000;
7'b0001100: y = 13'b1111010001100;
7'b0001101: y = 13'b1111001110000;
7'b0001110: y = 13'b1111001010101;
7'b0001111: y = 13'b1111000111010;
7'b0010000: y = 13'b1111000011111;
7'b0010001: y = 13'b1111000000100;
7'b0010010: y = 13'b1110111101010;
7'b0010011: y = 13'b1110111010000;
7'b0010100: y = 13'b1110110110110;
7'b0010101: y = 13'b1110110011101;
7'b0010110: y = 13'b1110110000100;
7'b0010111: y = 13'b1110101101011;
7'b0011000: y = 13'b1110101010010;
7'b0011001: y = 13'b1110100111001;
7'b0011010: y = 13'b1110100100001;
7'b0011011: y = 13'b1110100001001;
7'b0011100: y = 13'b1110011110001;
7'b0011101: y = 13'b1110011011010;
7'b0011110: y = 13'b1110011000010;
7'b0011111: y = 13'b1110010101011;
7'b0100000: y = 13'b1110010010100;
7'b0100001: y = 13'b1110001111110;
7'b0100010: y = 13'b1110001100111;
7'b0100011: y = 13'b1110001010001;
7'b0100100: y = 13'b1110000111011;
7'b0100101: y = 13'b1110000100101;
7'b0100110: y = 13'b1110000001111;
7'b0100111: y = 13'b1101111111010;
7'b0101000: y = 13'b1101111100101;
7'b0101001: y = 13'b1101111010000;
7'b0101010: y = 13'b1101110111011;
7'b0101011: y = 13'b1101110100110;
7'b0101100: y = 13'b1101110010001;
7'b0101101: y = 13'b1101101111101;
7'b0101110: y = 13'b1101101101001;
7'b0101111: y = 13'b1101101010101;
7'b0110000: y = 13'b1101101000001;
7'b0110001: y = 13'b1101100101101;
7'b0110010: y = 13'b1101100011010;
7'b0110011: y = 13'b1101100000110;
7'b0110100: y = 13'b1101011110011;
7'b0110101: y = 13'b1101011100000;
7'b0110110: y = 13'b1101011001101;
7'b0110111: y = 13'b1101010111010;
7'b0111000: y = 13'b1101010101000;
7'b0111001: y = 13'b1101010010101;
7'b0111010: y = 13'b1101010000011;
7'b0111011: y = 13'b1101001110001;
7'b0111100: y = 13'b1101001011111;
7'b0111101: y = 13'b1101001001101;
7'b0111110: y = 13'b1101000111100;
7'b0111111: y = 13'b1101000101010;
7'b1000000: y = 13'b1101000011001;
7'b1000001: y = 13'b1101000000111;
7'b1000010: y = 13'b1100111110110;
7'b1000011: y = 13'b1100111100101;
7'b1000100: y = 13'b1100111010100;
7'b1000101: y = 13'b1100111000011;
7'b1000110: y = 13'b1100110110011;
7'b1000111: y = 13'b1100110100010;
7'b1001000: y = 13'b1100110010010;
7'b1001001: y = 13'b1100110000010;
7'b1001010: y = 13'b1100101110010;
7'b1001011: y = 13'b1100101100001;
7'b1001100: y = 13'b1100101010010;
7'b1001101: y = 13'b1100101000010;
7'b1001110: y = 13'b1100100110010;
7'b1001111: y = 13'b1100100100011;
7'b1010000: y = 13'b1100100010011;
7'b1010001: y = 13'b1100100000100;
7'b1010010: y = 13'b1100011110101;
7'b1010011: y = 13'b1100011100101;
7'b1010100: y = 13'b1100011010110;
7'b1010101: y = 13'b1100011000111;
7'b1010110: y = 13'b1100010111001;
7'b1010111: y = 13'b1100010101010;
7'b1011000: y = 13'b1100010011011;
7'b1011001: y = 13'b1100010001101;
7'b1011010: y = 13'b1100001111110;
7'b1011011: y = 13'b1100001110000;
7'b1011100: y = 13'b1100001100010;
7'b1011101: y = 13'b1100001010100;
7'b1011110: y = 13'b1100001000110;
7'b1011111: y = 13'b1100000111000;
7'b1100000: y = 13'b1100000101010;
7'b1100001: y = 13'b1100000011100;
7'b1100010: y = 13'b1100000001111;
7'b1100011: y = 13'b1100000000001;
7'b1100100: y = 13'b1011111110100;
7'b1100101: y = 13'b1011111100110;
7'b1100110: y = 13'b1011111011001;
7'b1100111: y = 13'b1011111001100;
7'b1101000: y = 13'b1011110111111;
7'b1101001: y = 13'b1011110110010;
7'b1101010: y = 13'b1011110100101;
7'b1101011: y = 13'b1011110011000;
7'b1101100: y = 13'b1011110001011;
7'b1101101: y = 13'b1011101111110;
7'b1101110: y = 13'b1011101110010;
7'b1101111: y = 13'b1011101100101;
7'b1110000: y = 13'b1011101011001;
7'b1110001: y = 13'b1011101001100;
7'b1110010: y = 13'b1011101000000;
7'b1110011: y = 13'b1011100110100;
7'b1110100: y = 13'b1011100101000;
7'b1110101: y = 13'b1011100011100;
7'b1110110: y = 13'b1011100010000;
7'b1110111: y = 13'b1011100000100;
7'b1111000: y = 13'b1011011111000;
7'b1111001: y = 13'b1011011101100;
7'b1111010: y = 13'b1011011100000;
7'b1111011: y = 13'b1011011010101;
7'b1111100: y = 13'b1011011001001;
7'b1111101: y = 13'b1011010111101;
7'b1111110: y = 13'b1011010110010;
7'b1111111: y = 13'b1011010100111;
default: y = 13'bxxxxxxxxxxxxx;
8'b01000000: y = 14'b10110100010111;
8'b01000001: y = 14'b10110010111111;
8'b01000010: y = 14'b10110001101000;
8'b01000011: y = 14'b10110000010011;
8'b01000100: y = 14'b10101111000001;
8'b01000101: y = 14'b10101101110000;
8'b01000110: y = 14'b10101100100001;
8'b01000111: y = 14'b10101011010011;
8'b01001000: y = 14'b10101010000111;
8'b01001001: y = 14'b10101000111101;
8'b01001010: y = 14'b10100111110100;
8'b01001011: y = 14'b10100110101101;
8'b01001100: y = 14'b10100101100111;
8'b01001101: y = 14'b10100100100010;
8'b01001110: y = 14'b10100011011111;
8'b01001111: y = 14'b10100010011101;
8'b01010000: y = 14'b10100001011100;
8'b01010001: y = 14'b10100000011100;
8'b01010010: y = 14'b10011111011110;
8'b01010011: y = 14'b10011110100001;
8'b01010100: y = 14'b10011101100100;
8'b01010101: y = 14'b10011100101001;
8'b01010110: y = 14'b10011011101111;
8'b01010111: y = 14'b10011010110110;
8'b01011000: y = 14'b10011001111110;
8'b01011001: y = 14'b10011001000110;
8'b01011010: y = 14'b10011000010000;
8'b01011011: y = 14'b10010111011011;
8'b01011100: y = 14'b10010110100110;
8'b01011101: y = 14'b10010101110011;
8'b01011110: y = 14'b10010101000000;
8'b01011111: y = 14'b10010100001110;
8'b01100000: y = 14'b10010011011100;
8'b01100001: y = 14'b10010010101100;
8'b01100010: y = 14'b10010001111100;
8'b01100011: y = 14'b10010001001101;
8'b01100100: y = 14'b10010000011111;
8'b01100101: y = 14'b10001111110001;
8'b01100110: y = 14'b10001111000100;
8'b01100111: y = 14'b10001110011000;
8'b01101000: y = 14'b10001101101100;
8'b01101001: y = 14'b10001101000001;
8'b01101010: y = 14'b10001100010110;
8'b01101011: y = 14'b10001011101100;
8'b01101100: y = 14'b10001011000011;
8'b01101101: y = 14'b10001010011010;
8'b01101110: y = 14'b10001001110010;
8'b01101111: y = 14'b10001001001010;
8'b01110000: y = 14'b10001000100011;
8'b01110001: y = 14'b10000111111101;
8'b01110010: y = 14'b10000111010111;
8'b01110011: y = 14'b10000110110001;
8'b01110100: y = 14'b10000110001100;
8'b01110101: y = 14'b10000101100111;
8'b01110110: y = 14'b10000101000011;
8'b01110111: y = 14'b10000100011111;
8'b01111000: y = 14'b10000011111100;
8'b01111001: y = 14'b10000011011001;
8'b01111010: y = 14'b10000010110111;
8'b01111011: y = 14'b10000010010101;
8'b01111100: y = 14'b10000001110011;
8'b01111101: y = 14'b10000001010010;
8'b01111110: y = 14'b10000000110001;
8'b01111111: y = 14'b10000000010001;
8'b10000000: y = 14'b01111111110001;
8'b10000001: y = 14'b01111111010001;
8'b10000010: y = 14'b01111110110010;
8'b10000011: y = 14'b01111110010011;
8'b10000100: y = 14'b01111101110101;
8'b10000101: y = 14'b01111101010110;
8'b10000110: y = 14'b01111100111001;
8'b10000111: y = 14'b01111100011011;
8'b10001000: y = 14'b01111011111110;
8'b10001001: y = 14'b01111011100001;
8'b10001010: y = 14'b01111011000100;
8'b10001011: y = 14'b01111010101000;
8'b10001100: y = 14'b01111010001100;
8'b10001101: y = 14'b01111001110000;
8'b10001110: y = 14'b01111001010101;
8'b10001111: y = 14'b01111000111010;
8'b10010000: y = 14'b01111000011111;
8'b10010001: y = 14'b01111000000100;
8'b10010010: y = 14'b01110111101010;
8'b10010011: y = 14'b01110111010000;
8'b10010100: y = 14'b01110110110110;
8'b10010101: y = 14'b01110110011101;
8'b10010110: y = 14'b01110110000100;
8'b10010111: y = 14'b01110101101011;
8'b10011000: y = 14'b01110101010010;
8'b10011001: y = 14'b01110100111001;
8'b10011010: y = 14'b01110100100001;
8'b10011011: y = 14'b01110100001001;
8'b10011100: y = 14'b01110011110001;
8'b10011101: y = 14'b01110011011010;
8'b10011110: y = 14'b01110011000010;
8'b10011111: y = 14'b01110010101011;
8'b10100000: y = 14'b01110010010100;
8'b10100001: y = 14'b01110001111110;
8'b10100010: y = 14'b01110001100111;
8'b10100011: y = 14'b01110001010001;
8'b10100100: y = 14'b01110000111011;
8'b10100101: y = 14'b01110000100101;
8'b10100110: y = 14'b01110000001111;
8'b10100111: y = 14'b01101111111010;
8'b10101000: y = 14'b01101111100101;
8'b10101001: y = 14'b01101111010000;
8'b10101010: y = 14'b01101110111011;
8'b10101011: y = 14'b01101110100110;
8'b10101100: y = 14'b01101110010001;
8'b10101101: y = 14'b01101101111101;
8'b10101110: y = 14'b01101101101001;
8'b10101111: y = 14'b01101101010101;
8'b10110000: y = 14'b01101101000001;
8'b10110001: y = 14'b01101100101101;
8'b10110010: y = 14'b01101100011010;
8'b10110011: y = 14'b01101100000110;
8'b10110100: y = 14'b01101011110011;
8'b10110101: y = 14'b01101011100000;
8'b10110110: y = 14'b01101011001101;
8'b10110111: y = 14'b01101010111010;
8'b10111000: y = 14'b01101010101000;
8'b10111001: y = 14'b01101010010101;
8'b10111010: y = 14'b01101010000011;
8'b10111011: y = 14'b01101001110001;
8'b10111100: y = 14'b01101001011111;
8'b10111101: y = 14'b01101001001101;
8'b10111110: y = 14'b01101000111100;
8'b10111111: y = 14'b01101000101010;
8'b11000000: y = 14'b01101000011001;
8'b11000001: y = 14'b01101000000111;
8'b11000010: y = 14'b01100111110110;
8'b11000011: y = 14'b01100111100101;
8'b11000100: y = 14'b01100111010100;
8'b11000101: y = 14'b01100111000011;
8'b11000110: y = 14'b01100110110011;
8'b11000111: y = 14'b01100110100010;
8'b11001000: y = 14'b01100110010010;
8'b11001001: y = 14'b01100110000010;
8'b11001010: y = 14'b01100101110010;
8'b11001011: y = 14'b01100101100001;
8'b11001100: y = 14'b01100101010010;
8'b11001101: y = 14'b01100101000010;
8'b11001110: y = 14'b01100100110010;
8'b11001111: y = 14'b01100100100011;
8'b11010000: y = 14'b01100100010011;
8'b11010001: y = 14'b01100100000100;
8'b11010010: y = 14'b01100011110101;
8'b11010011: y = 14'b01100011100101;
8'b11010100: y = 14'b01100011010110;
8'b11010101: y = 14'b01100011000111;
8'b11010110: y = 14'b01100010111001;
8'b11010111: y = 14'b01100010101010;
8'b11011000: y = 14'b01100010011011;
8'b11011001: y = 14'b01100010001101;
8'b11011010: y = 14'b01100001111110;
8'b11011011: y = 14'b01100001110000;
8'b11011100: y = 14'b01100001100010;
8'b11011101: y = 14'b01100001010100;
8'b11011110: y = 14'b01100001000110;
8'b11011111: y = 14'b01100000111000;
8'b11100000: y = 14'b01100000101010;
8'b11100001: y = 14'b01100000011100;
8'b11100010: y = 14'b01100000001111;
8'b11100011: y = 14'b01100000000001;
8'b11100100: y = 14'b01011111110100;
8'b11100101: y = 14'b01011111100110;
8'b11100110: y = 14'b01011111011001;
8'b11100111: y = 14'b01011111001100;
8'b11101000: y = 14'b01011110111111;
8'b11101001: y = 14'b01011110110010;
8'b11101010: y = 14'b01011110100101;
8'b11101011: y = 14'b01011110011000;
8'b11101100: y = 14'b01011110001011;
8'b11101101: y = 14'b01011101111110;
8'b11101110: y = 14'b01011101110010;
8'b11101111: y = 14'b01011101100101;
8'b11110000: y = 14'b01011101011001;
8'b11110001: y = 14'b01011101001100;
8'b11110010: y = 14'b01011101000000;
8'b11110011: y = 14'b01011100110100;
8'b11110100: y = 14'b01011100101000;
8'b11110101: y = 14'b01011100011100;
8'b11110110: y = 14'b01011100010000;
8'b11110111: y = 14'b01011100000100;
8'b11111000: y = 14'b01011011111000;
8'b11111001: y = 14'b01011011101100;
8'b11111010: y = 14'b01011011100000;
8'b11111011: y = 14'b01011011010101;
8'b11111100: y = 14'b01011011001001;
8'b11111101: y = 14'b01011010111101;
8'b11111110: y = 14'b01011010110010;
8'b11111111: y = 14'b01011010100111;
default: y = 14'bxxxxxxxxxxxxxx;
endcase // case (a)
endmodule // sbtm_a0

4
wally-pipelined/testbench/testbench-imperas.sv
View File

@ -61,7 +61,7 @@ string tests32f[] = '{
"rv32f/I-FCVT-S-WU-01", "2000",
"rv32f/I-FCVT-W-S-01", "2000",
"rv32f/I-FCVT-WU-S-01", "2000",
// "rv32f/I-FDIV-S-01", "2000",
"rv32f/I-FDIV-S-01", "2000",
"rv32f/I-FEQ-S-01", "2000",
"rv32f/I-FLE-S-01", "2000",
"rv32f/I-FLT-S-01", "2000",
@ -77,7 +77,7 @@ string tests32f[] = '{
"rv32f/I-FSGNJ-S-01", "2000",
"rv32f/I-FSGNJN-S-01", "2000",
"rv32f/I-FSGNJX-S-01", "2000",
// "rv32f/I-FSQRT-S-01", "2000",
"rv32f/I-FSQRT-S-01", "2000",
"rv32f/I-FSW-01", "2000",
"rv32f/I-FLW-01", "2110",
"rv32f/I-FSUB-S-01", "2000"