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119 changes: 68 additions & 51 deletions components/multiplier/div_logic.sv
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Original file line number Diff line number Diff line change
Expand Up @@ -5,55 +5,57 @@ module div_logic(
input [52:0] fb,
input db,
input fdiv,
output logic [56:0] fq
output reg [56:0] fq
);

logic [57:0] fa_in, fb_in;
logic [116:0] mul_out;
wire [56:0] fd_out;
logic [115:0] mul_out;
logic [56:0] fd_out;

logic or_out;
logic [7:0] rom_data;

parameter n = 60;

logic [115:0] t,s1;
logic [115:0] c,s;
// logic [115:0] c,s;
logic [3:0] curr_state, next_state;
logic [3:0] Dcnt;
logic [57:0] x, A, Da, Db;
logic [54:0] E;
logic [115:0] Eb;
logic [8:0] look_up;
logic [7:0] look_up;

logic faadoe, fbbdoe;
logic Eadoe, Aadoe;
logic xadoe, xbdoe;

logic cce, sce;
// logic cce, sce;
logic Dce, Ebce, Ece;
logic xce, Ace;
logic tlu;

rom256X8 rom_inst (.addr(fb[51:44]), .data(rom_data));

multree_div mlt (.a(fa_in), .b(fb_in), .t(t), .s(s1));
// multree_div mlt (.a(fa_in), .b(fb_in), .t(t), .s(s1));

parameter m = 116;
add #(m) ad(
.a(c),
.b(s),
.c_in(1'b0),
.sum(mul_out)
);
multree mlt (.a(fa_in), .b(fb_in), .out(mul_out));

// parameter m = 116;
// add #(m) ad(
// .a(c),
// .b(s),
// .c_in(1'b0),
// .sum(mul_out)
// );

ortree #(n) or_inst (.x(mul_out[59:0]), .or_out(or_out));

select_fd select_f (
.Da(Da),
.Db(Db),
.Eb(Eb[114:0]),
.E(E),
.E({E, 3'b0}),
.db(db),
.fd(fd_out)
);
Expand All @@ -72,15 +74,15 @@ localparam SELECT_FD = 4'd10;
localparam ROUND1 = 4'd11;
localparam ROUND2 = 4'd12;

always @(posedge clk or negedge rst_n) begin
always @(negedge clk or negedge rst_n) begin
if (!rst_n)
curr_state <= UNPACK;
curr_state = UNPACK;
else
curr_state <= next_state;
curr_state = next_state;
end

always_comb begin
xce = 0; tlu = 0; Ace = 0; Dce = 0; Ece = 0; Ebce = 0; cce = 0; sce = 0;
xce = 0; tlu = 0; Ace = 0; Dce = 0; Ece = 0; Ebce = 0; /* cce = 0; sce = 0; */
faadoe = 0; fbbdoe = 0; Eadoe = 0; Aadoe = 0; xadoe = 0; xbdoe = 0;

case (curr_state)
Expand All @@ -101,11 +103,12 @@ always_comb begin

NEWTON2: begin
Ace = 1;
// sce = 1; cce = 1;
next_state = NEWTON3;
end

NEWTON3: begin
cce = 1; sce = 1;
// cce = 1; sce = 1;
Aadoe = 1; xbdoe = 1;
next_state = NEWTON4;
end
Expand All @@ -119,8 +122,8 @@ always_comb begin
end

QUOT1: begin
faadoe = 1; fbbdoe = 1;
cce = 1; sce = 1;
faadoe = 1; xbdoe = 1;
// cce = 1; sce = 1;
next_state = QUOT2;
end

Expand All @@ -131,8 +134,8 @@ always_comb begin
end

QUOT3: begin
fbbdoe = 1;
sce = 1; cce = 1;
fbbdoe = 1; Eadoe = 1;
// sce = 1; cce = 1;
next_state = QUOT4;
end

Expand All @@ -142,6 +145,7 @@ always_comb begin
end

SELECT_FD: begin
$display("Time=%0t | inside SELECT_FD block: fd_out %b", $time, fd_out);
next_state = ROUND1;
end

Expand All @@ -151,55 +155,68 @@ always_comb begin
endcase
end

always @(negedge clk or negedge rst_n) begin
always @(posedge clk or negedge rst_n) begin
if (!rst_n) begin
Dcnt <= 3'd0;
x <= '0; A <= '0; Da <= '0; Db <= '0; E <= '0; Eb <= '0;
fa_in <= '0; fb_in <= '0; fq <= '0; look_up <= '0;
c <= '0; s <= '0;
Dcnt = 3'd0;
x = '0; A = '0; Da = '0; Db = '0; E = '0; Eb = '0;
fa_in = '0; fb_in = '0; look_up = '0;
// c = '0; s = '0;
end else begin

if (curr_state == LOOKUP) begin
Dcnt <= db ? 3'd3 : 3'd2;
look_up <= rom_data;
Dcnt = db ? 3'd3 : 3'd2;
look_up = rom_data;
end
else if (curr_state == NEWTON1) begin
Dcnt <= Dcnt - 1;
Dcnt = Dcnt - 1;
end

if (sce && cce) begin
c <= t;
s <= s1;
end
// if (sce && cce) begin
// c = t;
// s = s1;
// end

if (faadoe) fa_in <= {fa, 5'b0};
if (fbbdoe) fb_in <= {fb, 5'b0};
if (faadoe) fa_in = {fa, 5'b0};
if (fbbdoe) fb_in = {fb, 5'b0};

if (xadoe) fa_in <= x;
if (xbdoe) fb_in <= x;
if (xadoe) fa_in = x;
if (xbdoe) fb_in = x;

if (Eadoe) fa_in <= E;
if (Aadoe) fa_in <= A;
if (Eadoe) fa_in = {E, 3'b0};
if (Aadoe) fa_in = A;

if (xce) begin
if (tlu)
x <= {2'b01, look_up, 48'b0};
if (tlu) begin
$display("Time=%0t | inside tlu block: look_up %b", $time, look_up);
x = {2'b01, look_up, 48'b0};
end
else
x <= mul_out[116:59];
x = mul_out[115:58];
end

if (Ace) A <= ~mul_out[116:59];
if (Ace) begin
$display("Time=%0t | inside Ace: mul_out %b", $time, mul_out);
A = ~mul_out[115:58];
end

if (Dce) begin
Da <= {fa, 5'b0};
Db <= {fb, 5'b0};
Da = {fa, 5'b0};
Db = {fb, 5'b0};
end

if (Ece) E <= {mul_out[116:91], (mul_out[90:62] & {29{db}}) , 3'b0};
if (Ece) E = {mul_out[115:90], (mul_out[89:61] & {29{db}}) , 3'b0};

if (Ebce) Eb <= mul_out[116:1];
if (Ebce) begin
Eb = mul_out[115:0];
$display("Time=%0t | inside SELECT_FD block: Da %b", $time, Da);
$display("Time=%0t | inside SELECT_FD block: Db %b", $time, Db);
$display("Time=%0t | inside SELECT_FD block: Eb %b", $time, Eb);
$display("Time=%0t | inside SELECT_FD block: E %b", $time, E);
end

if (curr_state == ROUND1) fq = fd_out;

if (curr_state == ROUND2) fq <= fd_out;
if (curr_state == ROUND2) fq = fd_out;
end
end

Expand Down
2 changes: 1 addition & 1 deletion components/multiplier/rom256X8.sv
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Expand Up @@ -6,7 +6,7 @@ module rom256X8(
reg [7:0] rom [255:0];

initial begin
$readmemb("/home/achir/dev/FloatingPointUnit/test_gen/lookup_table.txt", rom);
$readmemb("/home/achir/dev/thesis/FloatingPointUnit/test_gen/lookup_table.txt", rom);
end

assign data = rom[addr];
Expand Down
8 changes: 4 additions & 4 deletions components/multiplier/select_fd.sv
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,7 @@ module select_fd(
input [57:0] Da,
input [57:0] Db,
input [114:0] Eb,
input [54:0] E,
input [57:0] E,
input db,

output [56:0] fd
Expand Down Expand Up @@ -46,10 +46,10 @@ assign neg = sum[117];
assign zero = (beta == 117'b0);

assign r = neg ?
{1'b0, E}
{1'b0, E[57:3]}
: db ?
(E + 1)
: {E[54:30], {29{1'b1}}} + 1;
(E[57:3] + 1)
: {E[57:33], {29{1'b1}}} + 1;

assign fd[56:30] = r[55:29];
assign fd[29] = (db == 1) ? r[28] : ~zero;
Expand Down
3 changes: 3 additions & 0 deletions components/multiplier/test/tb_multree.sv
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Expand Up @@ -29,6 +29,9 @@ module tb_multree;
b = 58'b00000000000000000000000000000000000000000000000000000000001100;
#10;

a = 58'b00001000000000000000000000000000000000000000000000000000000000;
b = 58'b00000000000111111111000000000000000000000000000000000000000000;

end
endmodule

52 changes: 52 additions & 0 deletions test/tb_master.sv
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Original file line number Diff line number Diff line change
Expand Up @@ -86,10 +86,54 @@ always @(uut.mul.sig.div_inst.fd_out) begin
$display("Time=%0t | fd_out changed: %b", $time, uut.mul.sig.div_inst.fd_out);
end

// always @(uut.mul.sig.div_inst.cce) begin
// $display("Time=%0t | cce changed: %b", $time, uut.mul.sig.div_inst.cce);
// end
//
// always @(uut.mul.sig.div_inst.sce) begin
// $display("Time=%0t | sce changed: %b", $time, uut.mul.sig.div_inst.sce);
// end
//
// always @(uut.mul.sig.div_inst.c) begin
// $display("Time=%0t | c changed: %b", $time, uut.mul.sig.div_inst.c);
// end
//
// always @(uut.mul.sig.div_inst.s) begin
// $display("Time=%0t | s changed: %b", $time, uut.mul.sig.div_inst.s);
// end

always @(uut.mul.sig.div_inst.fq) begin
$display("Time=%0t | fq changed: %b", $time, uut.mul.sig.div_inst.fq);
end

always @(uut.mul.sig.div_inst.E) begin
$display("Time=%0t | E changed: %b", $time, uut.mul.sig.div_inst.E);
end

always @(uut.mul.sig.div_inst.Eb) begin
$display("Time=%0t | Eb changed: %b", $time, uut.mul.sig.div_inst.Eb);
end

always @(uut.mul.sig.div_inst.fd_out) begin
$display("Time=%0t | fd_out changed: %b", $time, uut.mul.sig.div_inst.fd_out);
end

always @(uut.mul.sig.div_inst.select_f.neg) begin
$display("Time=%0t | neg changed: %b", $time, uut.mul.sig.div_inst.select_f.neg);
end

always @(uut.mul.sig.div_inst.select_f.beta) begin
$display("Time=%0t | beta changed: %b", $time, uut.mul.sig.div_inst.select_f.beta);
end

always @(uut.mul.sig.div_inst.Da) begin
$display("Time=%0t | Da changed: %b", $time, uut.mul.sig.div_inst.Da);
end

always @(uut.mul.sig.div_inst.Db) begin
$display("Time=%0t | Db changed: %b", $time, uut.mul.sig.div_inst.Db);
end

always @(uut.mul.sig.div_inst.mul_out) begin
$display("Time=%0t | mul_out changed: %b", $time, uut.mul.sig.div_inst.mul_out);
end
Expand All @@ -110,6 +154,14 @@ always @(uut.mul.sig.div_inst.fb) begin
$display("Time=%0t | fb changed: %b", $time, uut.mul.sig.div_inst.fb);
end

always @(uut.mul.sig.div_inst.look_up) begin
$display("Time=%0t | look_up changed: %b", $time, uut.mul.sig.div_inst.look_up);
end

always @(uut.mul.sig.div_inst.tlu) begin
$display("Time=%0t | tlu changed: %b", $time, uut.mul.sig.div_inst.tlu);
end

always @(uut.mul.sig.div_inst.fa_in) begin
$display("Time=%0t | fa_in changed: %b", $time, uut.mul.sig.div_inst.fa_in);
end
Expand Down
6 changes: 3 additions & 3 deletions test_gen/src/main.rs
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Original file line number Diff line number Diff line change
@@ -1,18 +1,18 @@
use std::io;

use test_gen::{
file_utils::{factorize_denormal, factorize_normal},
// file_utils::{factorize_denormal, factorize_normal},
lookup::lookup_table,
};

fn main() -> io::Result<()> {
println!("Generating test files for floating point operations...");

// Generate test files for normal floating point operations
factorize_normal()?;
// factorize_normal()?;

// Generate test files for denormal floating point operations
factorize_denormal()?;
// factorize_denormal()?;

println!("All test files generated successfully!");

Expand Down