Set up the divider for on-the-fly conversion

This commit is contained in:
cturek 2022-05-26 16:45:28 +00:00
parent e8d97f0826
commit 4a4f153eef
3 changed files with 28 additions and 4 deletions

@ -1 +1 @@
Subproject commit be67c99bd461742aa1c100bcc0732657faae2230 Subproject commit 307c77b26e070ae85ffea665ad9b642b40e33c86

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@ -47,7 +47,7 @@ module srt #(parameter Nf=52) (
input logic Int, // Choose integer inputss input logic Int, // Choose integer inputss
input logic Sqrt, // perform square root, not divide input logic Sqrt, // perform square root, not divide
output logic rsign, output logic rsign,
output logic [Nf-1:0] Quot, Rem, // *** later handle integers output logic [Nf-1:0] Quot, Rem, QuotOTFC, // *** later handle integers
output logic [`NE-1:0] rExp, output logic [`NE-1:0] rExp,
output logic [3:0] Flags output logic [3:0] Flags
); );
@ -91,6 +91,8 @@ module srt #(parameter Nf=52) (
signcalc signcalc(.XSign, .YSign, .calcSign); signcalc signcalc(.XSign, .YSign, .calcSign);
srtpostproc postproc(rp, rm, Quot); srtpostproc postproc(rp, rm, Quot);
otfc otfc(qp, qz, qm, Quot, QuotOTFC);
endmodule endmodule
module srtpostproc #(parameter N=52) ( module srtpostproc #(parameter N=52) (
@ -210,9 +212,24 @@ module qacc #(parameter N=55) (
end */ end */
endmodule endmodule
//////////
// otfc //
//////////
module otfc #(parameter N=52) (
input logic qp, qz, qm,
input logic [N-1:0] Quot,
output logic [N-1:0] QuotOTFC
);
assign QuotOTFC = Quot;
endmodule
///////// /////////
// inv // // inv //
///////// /////////
module inv(input logic [55:0] in, module inv(input logic [55:0] in,
output logic [55:0] out); output logic [55:0] out);

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@ -44,7 +44,7 @@ module testbench;
logic [51:0] afrac, bfrac; logic [51:0] afrac, bfrac;
logic [10:0] aExp, bExp; logic [10:0] aExp, bExp;
logic asign, bsign; logic asign, bsign;
logic [51:0] r; logic [51:0] r, rOTFC;
logic [54:0] rp, rm; // positive quotient digits logic [54:0] rp, rm; // positive quotient digits
// Test parameters // Test parameters
@ -72,7 +72,7 @@ module testbench;
.SrcXFrac(afrac), .SrcYFrac(bfrac), .SrcXFrac(afrac), .SrcYFrac(bfrac),
.SrcA('0), .SrcB('0), .Fmt(2'b00), .SrcA('0), .SrcB('0), .Fmt(2'b00),
.W64(1'b0), .Signed(1'b0), .Int(1'b0), .Sqrt(1'b0), .W64(1'b0), .Signed(1'b0), .Int(1'b0), .Sqrt(1'b0),
.Quot(r), .Rem(), .Flags()); .Quot(r), .QuotOTFC(rOTFC), .Rem(), .Flags());
// Counter // Counter
counter counter(clk, req, done); counter counter(clk, req, done);
@ -117,6 +117,13 @@ module testbench;
$display("failed\n"); $display("failed\n");
$stop; $stop;
end end
if (r !== rOTFC) // Check if OTFC works
begin
errors = errors+1;
$display("OTFC is %h, should be %h\n", rOTFC, r);
$display("failed/n");
$stop;
end
if (afrac === 52'hxxxxxxxxxxxxx) if (afrac === 52'hxxxxxxxxxxxxx)
begin begin
$display("%d Tests completed successfully", testnum); $display("%d Tests completed successfully", testnum);