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2
Makefile
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@ -956,7 +956,7 @@ ifeq ($(ENABLE_ABC),1)
cp -r $(PROGRAM_PREFIX)yosys-abc.exe abc/lib/x86/pthreadVC2.dll yosys-win32-mxebin-$(YOSYS_VER)/
endif
echo -en 'This is Yosys $(YOSYS_VER) for Win32.\r\n' > yosys-win32-mxebin-$(YOSYS_VER)/readme.txt
echo -en 'Documentation at https://yosyshq.net/yosys/.\r\n' >> yosys-win32-mxebin-$(YOSYS_VER)/readme.txt
echo -en 'Documentation at http://yosyshq.net/yosys/.\r\n' >> yosys-win32-mxebin-$(YOSYS_VER)/readme.txt
zip -r yosys-win32-mxebin-$(YOSYS_VER).zip yosys-win32-mxebin-$(YOSYS_VER)/
endif

8
README.md
View File

@ -38,11 +38,11 @@ Web Site and Other Resources
============================
More information and documentation can be found on the Yosys web site:
- https://yosyshq.net/yosys/
- http://yosyshq.net/yosys/
The "Documentation" page on the web site contains links to more resources,
including a manual that even describes some of the Yosys internals:
- https://yosyshq.net/yosys/documentation.html
- http://yosyshq.net/yosys/documentation.html
The directory `guidelines` contains additional information
for people interested in using the Yosys C++ APIs.
@ -92,7 +92,7 @@ For Cygwin use the following command to install all prerequisites, or select the
There are also pre-compiled Yosys binary packages for Ubuntu and Win32 as well
as a source distribution for Visual Studio. Visit the Yosys download page for
more information: https://yosyshq.net/yosys/download.html
more information: http://yosyshq.net/yosys/download.html
To configure the build system to use a specific compiler, use one of
@ -568,7 +568,7 @@ Building the documentation
==========================
Note that there is no need to build the manual if you just want to read it.
Simply download the PDF from https://yosyshq.net/yosys/documentation.html
Simply download the PDF from http://yosyshq.net/yosys/documentation.html
instead.
On Ubuntu, texlive needs these packages to be able to build the manual:

8
manual/APPNOTE_010_Verilog_to_BLIF.tex
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@ -52,7 +52,7 @@
\begin{document}
\title{Yosys Application Note 010: \\ Converting Verilog to BLIF}
\author{Claire Xenia Wolf \\ November 2013}
\author{Clifford Wolf \\ November 2013}
\maketitle
\begin{abstract}
@ -437,12 +437,12 @@ design to fit a certain need without actually touching the RTL code.
\begin{thebibliography}{9}
\bibitem{yosys}
Claire Xenia Wolf. The Yosys Open SYnthesis Suite. \\
\url{https://yosyshq.net/yosys/}
Clifford Wolf. The Yosys Open SYnthesis Suite. \\
\url{http://yosyshq.net/yosys/}
\bibitem{bigsim}
yosys-bigsim, a collection of real-world Verilog designs for regression testing purposes. \\
\url{https://github.com/YosysHQ/yosys-bigsim}
\url{https://github.com/cliffordwolf/yosys-bigsim}
\bibitem{navre}
Sebastien Bourdeauducq. Navr\'e AVR clone (8-bit RISC). \\

6
manual/APPNOTE_011_Design_Investigation.tex
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@ -54,7 +54,7 @@
\begin{document}
\title{Yosys Application Note 011: \\ Interactive Design Investigation}
\author{Claire Xenia Wolf \\ Original Version December 2013}
\author{Clifford Wolf \\ Original Version December 2013}
\maketitle
\begin{abstract}
@ -1041,8 +1041,8 @@ framework for new algorithms alike.
\begin{thebibliography}{9}
\bibitem{yosys}
Claire Xenia Wolf. The Yosys Open SYnthesis Suite.
\url{https://yosyshq.net/yosys/}
Clifford Wolf. The Yosys Open SYnthesis Suite.
\url{http://yosyshq.net/yosys/}
\bibitem{graphviz}
Graphviz - Graph Visualization Software.

6
manual/APPNOTE_012_Verilog_to_BTOR.tex
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@ -52,7 +52,7 @@
\begin{document}
\title{Yosys Application Note 012: \\ Converting Verilog to BTOR}
\author{Ahmed Irfan and Claire Xenia Wolf \\ April 2015}
\author{Ahmed Irfan and Clifford Wolf \\ April 2015}
\maketitle
\begin{abstract}
@ -410,8 +410,8 @@ verification benchmarks with or without memories from Verilog designs.
\begin{thebibliography}{9}
\bibitem{yosys}
Claire Xenia Wolf. The Yosys Open SYnthesis Suite. \\
\url{https://yosyshq.net/yosys/}
Clifford Wolf. The Yosys Open SYnthesis Suite. \\
\url{http://yosyshq.net/yosys/}
\bibitem{boolector}
Robert Brummayer and Armin Biere, Boolector: An Efficient SMT Solver for Bit-Vectors and Arrays\\

4
manual/CHAPTER_Auxlibs.tex
View File

@ -22,7 +22,7 @@ ConstEval} class provided in {\tt kernel/consteval.h}.
\label{sec:SubCircuit}
The files in {\tt libs/subcircuit} provide a library for solving the subcircuit
isomorphism problem. It is written by C. Wolf and based on the Ullmann
isomorphism problem. It is written by Clifford Wolf and based on the Ullmann
Subgraph Isomorphism Algorithm \cite{UllmannSubgraphIsomorphism}. It is used by
the {\tt extract} pass (see {\tt help extract} or Sec.~\ref{cmd:extract}).
@ -30,6 +30,6 @@ the {\tt extract} pass (see {\tt help extract} or Sec.~\ref{cmd:extract}).
The files in {\tt libs/ezsat} provide a library for simplifying generating CNF
formulas for SAT solvers. It also contains bindings of MiniSAT. The ezSAT
library is written by C. Wolf. It is used by the {\tt sat} pass (see
library is written by Clifford Wolf. It is used by the {\tt sat} pass (see
{\tt help sat} or Sec.~\ref{cmd:sat}).

2
manual/PRESENTATION_ExAdv.tex
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@ -890,7 +890,7 @@ Questions?
\bigskip
\bigskip
\begin{center}
\url{https://yosyshq.net/yosys/}
\url{http://yosyshq.net/yosys/}
\end{center}
\end{frame}

2
manual/PRESENTATION_ExOth.tex
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@ -221,7 +221,7 @@ Questions?
\bigskip
\bigskip
\begin{center}
\url{https://yosyshq.net/yosys/}
\url{http://yosyshq.net/yosys/}
\end{center}
\end{frame}

2
manual/PRESENTATION_ExSyn.tex
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@ -509,7 +509,7 @@ Questions?
\bigskip
\bigskip
\begin{center}
\url{https://yosyshq.net/yosys/}
\url{http://yosyshq.net/yosys/}
\end{center}
\end{frame}

14
manual/PRESENTATION_Intro.tex
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@ -260,7 +260,7 @@ The following slides cover an example project. This project contains three files
\end{itemize}
\vfill
Direct link to the files: \\ \footnotesize
\url{https://github.com/YosysHQ/yosys/tree/master/manual/PRESENTATION_Intro}
\url{https://github.com/cliffordwolf/yosys/tree/master/manual/PRESENTATION_Intro}
\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@ -476,7 +476,7 @@ Command reference:
\begin{itemize}
\item Use ``{\tt help}'' for a command list and ``{\tt help \it command}'' for details.
\item Or run ``{\tt yosys -H}'' or ``{\tt yosys -h \it command}''.
\item Or go to \url{https://yosyshq.net/yosys/documentation.html}.
\item Or go to \url{http://yosyshq.net/yosys/documentation.html}.
\end{itemize}
\bigskip
@ -806,7 +806,7 @@ but also formal verification, reverse engineering, ...}
\begin{itemize}
\item Ongoing PhD project on coarse grain synthesis \\
{\setlength{\parindent}{0.5cm}\footnotesize
Johann Glaser and C. Wolf. Methodology and Example-Driven Interconnect
Johann Glaser and Clifford Wolf. Methodology and Example-Driven Interconnect
Synthesis for Designing Heterogeneous Coarse-Grain Reconfigurable
Architectures. In Jan Haase, editor, \it Models, Methods, and Tools for Complex
Chip Design. Lecture Notes in Electrical Engineering. Volume 265, 2014, pp
@ -913,11 +913,11 @@ control logic because it is simpler than setting up a commercial flow.
\begin{frame}{\subsecname}
\begin{itemize}
\item Website: \\
\smallskip\hskip1cm\url{https://yosyshq.net/yosys/}
\smallskip\hskip1cm\url{http://yosyshq.net/yosys/}
\bigskip
\item Manual, Command Reference, Application Notes: \\
\smallskip\hskip1cm\url{https://yosyshq.net/yosys/documentation.html}
\smallskip\hskip1cm\url{http://yosyshq.net/yosys/documentation.html}
\bigskip
\item Instead of a mailing list we have a SubReddit: \\
@ -925,7 +925,7 @@ control logic because it is simpler than setting up a commercial flow.
\bigskip
\item Direct link to the source code: \\
\smallskip\hskip1cm\url{https://github.com/YosysHQ/yosys}
\smallskip\hskip1cm\url{https://github.com/cliffordwolf/yosys}
\end{itemize}
\end{frame}
@ -950,7 +950,7 @@ Questions?
\bigskip
\bigskip
\begin{center}
\url{https://yosyshq.net/yosys/}
\url{http://yosyshq.net/yosys/}
\end{center}
\end{frame}

2
manual/PRESENTATION_Prog.tex
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@ -590,7 +590,7 @@ Questions?
\bigskip
\bigskip
\begin{center}
\url{https://yosyshq.net/yosys/}
\url{http://yosyshq.net/yosys/}
\end{center}
\end{frame}

8
manual/literature.bib
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@ -1,7 +1,7 @@
@inproceedings{intersynth,
title={Example-driven interconnect synthesis for heterogeneous coarse-grain reconfigurable logic},
author={C. Wolf and Johann Glaser and Florian Schupfer and Jan Haase and Christoph Grimm},
author={Clifford Wolf and Johann Glaser and Florian Schupfer and Jan Haase and Christoph Grimm},
booktitle={FDL Proceeding of the 2012 Forum on Specification and Design Languages},
pages={194--201},
year={2012}
@ -9,7 +9,7 @@
@incollection{intersynthFdlBookChapter,
title={Methodology and Example-Driven Interconnect Synthesis for Designing Heterogeneous Coarse-Grain Reconfigurable Architectures},
author={Johann Glaser and C. Wolf},
author={Johann Glaser and Clifford Wolf},
booktitle={Advances in Models, Methods, and Tools for Complex Chip Design --- Selected contributions from FDL'12},
editor={Jan Haase},
publisher={Springer},
@ -18,14 +18,14 @@
}
@unpublished{BACC,
author = {C. Wolf},
author = {Clifford Wolf},
title = {Design and Implementation of the Yosys Open SYnthesis Suite},
note = {Bachelor Thesis, Vienna University of Technology},
year = {2013}
}
@unpublished{VerilogFossEval,
author = {C. Wolf},
author = {Clifford Wolf},
title = {Evaluation of Open Source Verilog Synthesis Tools for Feature-Completeness and Extensibility},
note = {Unpublished Student Research Paper, Vienna University of Technology},
year = {2012}

4
manual/manual.tex
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@ -51,7 +51,7 @@
% Hyperlinks
\usepackage[colorlinks,hyperindex,plainpages=false,%
pdftitle={Yosys Manual},%
pdfauthor={Claire Xenia Wolf},%
pdfauthor={Clifford Wolf},%
%pdfkeywords={keyword},%
pdfpagelabels,%
pagebackref,%
@ -137,7 +137,7 @@ bookmarksopen=false%
\bf\Huge Yosys Manual
\bigskip
\large Claire Xenia Wolf
\large Clifford Wolf
\end{center}
\vfil\null

6
manual/presentation.tex
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@ -80,8 +80,8 @@
\end{centering}}
\title{Yosys Open SYnthesis Suite}
\author{Claire Xenia Wolf}
\institute{https://yosyshq.net/yosys/}
\author{Clifford Wolf}
\institute{http://yosyshq.net/yosys/}
\usetheme{Madrid}
\usecolortheme{seagull}
@ -124,7 +124,7 @@ writing extensions to Yosys using the C++ API.
\section{About me}
\begin{frame}{About me}
Hi! I'm Claire Xenia Wolf.
Hi! I'm Clifford Wolf.
\bigskip
I like writing open source software. For example:

12
manual/weblinks.bib
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@ -1,20 +1,20 @@
@misc{YosysGit,
author = {Claire Xenia Wolf},
author = {Clifford Wolf},
title = {{Yosys Open SYnthesis Suite (YOSYS)}},
note = {\url{http://github.com/YosysHQ/yosys}}
note = {\url{http://github.com/cliffordwolf/yosys}}
}
@misc{YosysTestsGit,
author = {Claire Xenia Wolf},
author = {Clifford Wolf},
title = {{Yosys Test Bench}},
note = {\url{http://github.com/YosysHQ/yosys-tests}}
note = {\url{http://github.com/cliffordwolf/yosys-tests}}
}
@misc{VlogHammer,
author = {Claire Xenia Wolf},
author = {Clifford Wolf},
title = {{VlogHammer Verilog Synthesis Regression Tests}},
note = {\url{http://github.com/YosysHQ/VlogHammer}}
note = {\url{http://github.com/cliffordwolf/VlogHammer}}
}
@misc{Icarus,

2
misc/create_vcxsrc.sh
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@ -6,7 +6,7 @@ yosysver="$2"
gitsha="$3"
rm -rf YosysVS-Tpl-v2.zip YosysVS
wget https://yosyshq.net/yosys/nogit/YosysVS-Tpl-v2.zip
wget http://yosyshq.net/yosys/nogit/YosysVS-Tpl-v2.zip
unzip YosysVS-Tpl-v2.zip
rm -f YosysVS-Tpl-v2.zip

2
passes/sat/eval.cc
View File

@ -18,7 +18,7 @@
*/
// [[CITE]] VlogHammer Verilog Regression Test Suite
// https://yosyshq.net/yosys/vloghammer.html
// http://yosyshq.net/yosys/vloghammer.html
#include "kernel/register.h"
#include "kernel/celltypes.h"

636
techlibs/common/mul2dsp.v
View File

@ -1,318 +1,318 @@
/*
* yosys -- Yosys Open SYnthesis Suite
*
* Copyright (C) 2012 Claire Xenia Wolf <claire@yosyshq.com>
* 2019 Eddie Hung <eddie@fpgeh.com>
* 2019 gatecat <gatecat@ds0.me>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* ---
*
* Tech-mapping rules for decomposing arbitrarily-sized $mul cells
* into an equivalent collection of smaller `DSP_NAME cells (with the
* same interface as $mul) no larger than `DSP_[AB]_MAXWIDTH, attached
* to $shl and $add cells.
*
*/
`ifndef DSP_A_MAXWIDTH
$fatal(1, "Macro DSP_A_MAXWIDTH must be defined");
`endif
`ifndef DSP_B_MAXWIDTH
$fatal(1, "Macro DSP_B_MAXWIDTH must be defined");
`endif
`ifndef DSP_B_MAXWIDTH
$fatal(1, "Macro DSP_B_MAXWIDTH must be defined");
`endif
`ifndef DSP_A_MAXWIDTH_PARTIAL
`define DSP_A_MAXWIDTH_PARTIAL `DSP_A_MAXWIDTH
`endif
`ifndef DSP_B_MAXWIDTH_PARTIAL
`define DSP_B_MAXWIDTH_PARTIAL `DSP_B_MAXWIDTH
`endif
`ifndef DSP_NAME
$fatal(1, "Macro DSP_NAME must be defined");
`endif
`define MAX(a,b) (a > b ? a : b)
`define MIN(a,b) (a < b ? a : b)
(* techmap_celltype = "$mul $__mul" *)
module _80_mul (A, B, Y);
parameter A_SIGNED = 0;
parameter B_SIGNED = 0;
parameter A_WIDTH = 1;
parameter B_WIDTH = 1;
parameter Y_WIDTH = 1;
(* force_downto *)
input [A_WIDTH-1:0] A;
(* force_downto *)
input [B_WIDTH-1:0] B;
(* force_downto *)
output [Y_WIDTH-1:0] Y;
parameter _TECHMAP_CELLTYPE_ = "";
generate
if (0) begin end
`ifdef DSP_A_MINWIDTH
else if (A_WIDTH < `DSP_A_MINWIDTH)
wire _TECHMAP_FAIL_ = 1;
`endif
`ifdef DSP_B_MINWIDTH
else if (B_WIDTH < `DSP_B_MINWIDTH)
wire _TECHMAP_FAIL_ = 1;
`endif
`ifdef DSP_Y_MINWIDTH
else if (Y_WIDTH < `DSP_Y_MINWIDTH)
wire _TECHMAP_FAIL_ = 1;
`endif
`ifdef DSP_SIGNEDONLY
else if (_TECHMAP_CELLTYPE_ == "$mul" && !A_SIGNED && !B_SIGNED)
\$mul #(
.A_SIGNED(1),
.B_SIGNED(1),
.A_WIDTH(A_WIDTH + 1),
.B_WIDTH(B_WIDTH + 1),
.Y_WIDTH(Y_WIDTH)
) _TECHMAP_REPLACE_ (
.A({1'b0, A}),
.B({1'b0, B}),
.Y(Y)
);
`endif
else if (_TECHMAP_CELLTYPE_ == "$mul" && A_WIDTH < B_WIDTH)
\$mul #(
.A_SIGNED(B_SIGNED),
.B_SIGNED(A_SIGNED),
.A_WIDTH(B_WIDTH),
.B_WIDTH(A_WIDTH),
.Y_WIDTH(Y_WIDTH)
) _TECHMAP_REPLACE_ (
.A(B),
.B(A),
.Y(Y)
);
else begin
wire [1023:0] _TECHMAP_DO_ = "proc; clean";
`ifdef DSP_SIGNEDONLY
localparam sign_headroom = 1;
`else
localparam sign_headroom = 0;
`endif
genvar i;
if (A_WIDTH > `DSP_A_MAXWIDTH) begin
localparam n = (A_WIDTH-`DSP_A_MAXWIDTH+`DSP_A_MAXWIDTH_PARTIAL-sign_headroom-1) / (`DSP_A_MAXWIDTH_PARTIAL-sign_headroom);
localparam partial_Y_WIDTH = `MIN(Y_WIDTH, B_WIDTH+`DSP_A_MAXWIDTH_PARTIAL);
localparam last_A_WIDTH = A_WIDTH-n*(`DSP_A_MAXWIDTH_PARTIAL-sign_headroom);
localparam last_Y_WIDTH = B_WIDTH+last_A_WIDTH;
if (A_SIGNED && B_SIGNED) begin : blk
(* force_downto *)
wire signed [partial_Y_WIDTH-1:0] partial [n-1:0];
(* force_downto *)
wire signed [last_Y_WIDTH-1:0] last_partial;
(* force_downto *)
wire signed [Y_WIDTH-1:0] partial_sum [n:0];
end
else begin : blk
(* force_downto *)
wire [partial_Y_WIDTH-1:0] partial [n-1:0];
(* force_downto *)
wire [last_Y_WIDTH-1:0] last_partial;
(* force_downto *)
wire [Y_WIDTH-1:0] partial_sum [n:0];
end
for (i = 0; i < n; i=i+1) begin:sliceA
\$__mul #(
.A_SIGNED(sign_headroom),
.B_SIGNED(B_SIGNED),
.A_WIDTH(`DSP_A_MAXWIDTH_PARTIAL),
.B_WIDTH(B_WIDTH),
.Y_WIDTH(partial_Y_WIDTH)
) mul (
.A({{sign_headroom{1'b0}}, A[i*(`DSP_A_MAXWIDTH_PARTIAL-sign_headroom) +: `DSP_A_MAXWIDTH_PARTIAL-sign_headroom]}),
.B(B),
.Y(blk.partial[i])
);
// TODO: Currently a 'cascade' approach to summing the partial
// products is taken here, but a more efficient 'binary
// reduction' approach also exists...
if (i == 0)
assign blk.partial_sum[i] = blk.partial[i];
else
assign blk.partial_sum[i] = (blk.partial[i] << (* mul2dsp *) i*(`DSP_A_MAXWIDTH_PARTIAL-sign_headroom)) + (* mul2dsp *) blk.partial_sum[i-1];
end
\$__mul #(
.A_SIGNED(A_SIGNED),
.B_SIGNED(B_SIGNED),
.A_WIDTH(last_A_WIDTH),
.B_WIDTH(B_WIDTH),
.Y_WIDTH(last_Y_WIDTH)
) sliceA.last (
.A(A[A_WIDTH-1 -: last_A_WIDTH]),
.B(B),
.Y(blk.last_partial)
);
assign blk.partial_sum[n] = (blk.last_partial << (* mul2dsp *) n*(`DSP_A_MAXWIDTH_PARTIAL-sign_headroom)) + (* mul2dsp *) blk.partial_sum[n-1];
assign Y = blk.partial_sum[n];
end
else if (B_WIDTH > `DSP_B_MAXWIDTH) begin
localparam n = (B_WIDTH-`DSP_B_MAXWIDTH+`DSP_B_MAXWIDTH_PARTIAL-sign_headroom-1) / (`DSP_B_MAXWIDTH_PARTIAL-sign_headroom);
localparam partial_Y_WIDTH = `MIN(Y_WIDTH, A_WIDTH+`DSP_B_MAXWIDTH_PARTIAL);
localparam last_B_WIDTH = B_WIDTH-n*(`DSP_B_MAXWIDTH_PARTIAL-sign_headroom);
localparam last_Y_WIDTH = A_WIDTH+last_B_WIDTH;
if (A_SIGNED && B_SIGNED) begin : blk
(* force_downto *)
wire signed [partial_Y_WIDTH-1:0] partial [n-1:0];
(* force_downto *)
wire signed [last_Y_WIDTH-1:0] last_partial;
(* force_downto *)
wire signed [Y_WIDTH-1:0] partial_sum [n:0];
end
else begin : blk
(* force_downto *)
wire [partial_Y_WIDTH-1:0] partial [n-1:0];
(* force_downto *)
wire [last_Y_WIDTH-1:0] last_partial;
(* force_downto *)
wire [Y_WIDTH-1:0] partial_sum [n:0];
end
for (i = 0; i < n; i=i+1) begin:sliceB
\$__mul #(
.A_SIGNED(A_SIGNED),
.B_SIGNED(sign_headroom),
.A_WIDTH(A_WIDTH),
.B_WIDTH(`DSP_B_MAXWIDTH_PARTIAL),
.Y_WIDTH(partial_Y_WIDTH)
) mul (
.A(A),
.B({{sign_headroom{1'b0}}, B[i*(`DSP_B_MAXWIDTH_PARTIAL-sign_headroom) +: `DSP_B_MAXWIDTH_PARTIAL-sign_headroom]}),
.Y(blk.partial[i])
);
// TODO: Currently a 'cascade' approach to summing the partial
// products is taken here, but a more efficient 'binary
// reduction' approach also exists...
if (i == 0)
assign blk.partial_sum[i] = blk.partial[i];
else
assign blk.partial_sum[i] = (blk.partial[i] << (* mul2dsp *) i*(`DSP_B_MAXWIDTH_PARTIAL-sign_headroom)) + (* mul2dsp *) blk.partial_sum[i-1];
end
\$__mul #(
.A_SIGNED(A_SIGNED),
.B_SIGNED(B_SIGNED),
.A_WIDTH(A_WIDTH),
.B_WIDTH(last_B_WIDTH),
.Y_WIDTH(last_Y_WIDTH)
) mul_sliceB_last (
.A(A),
.B(B[B_WIDTH-1 -: last_B_WIDTH]),
.Y(blk.last_partial)
);
assign blk.partial_sum[n] = (blk.last_partial << (* mul2dsp *) n*(`DSP_B_MAXWIDTH_PARTIAL-sign_headroom)) + (* mul2dsp *) blk.partial_sum[n-1];
assign Y = blk.partial_sum[n];
end
else begin
if (A_SIGNED) begin : blkA
wire signed [`DSP_A_MAXWIDTH-1:0] Aext = $signed(A);
end
else begin : blkA
wire [`DSP_A_MAXWIDTH-1:0] Aext = A;
end
if (B_SIGNED) begin : blkB
wire signed [`DSP_B_MAXWIDTH-1:0] Bext = $signed(B);
end
else begin : blkB
wire [`DSP_B_MAXWIDTH-1:0] Bext = B;
end
`DSP_NAME #(
.A_SIGNED(A_SIGNED),
.B_SIGNED(B_SIGNED),
.A_WIDTH(`DSP_A_MAXWIDTH),
.B_WIDTH(`DSP_B_MAXWIDTH),
.Y_WIDTH(`MIN(Y_WIDTH,`DSP_A_MAXWIDTH+`DSP_B_MAXWIDTH)),
) _TECHMAP_REPLACE_ (
.A(blkA.Aext),
.B(blkB.Bext),
.Y(Y)
);
end
end
endgenerate
endmodule
(* techmap_celltype = "$mul $__mul" *)
module _90_soft_mul (A, B, Y);
parameter A_SIGNED = 0;
parameter B_SIGNED = 0;
parameter A_WIDTH = 1;
parameter B_WIDTH = 1;
parameter Y_WIDTH = 1;
(* force_downto *)
input [A_WIDTH-1:0] A;
(* force_downto *)
input [B_WIDTH-1:0] B;
(* force_downto *)
output [Y_WIDTH-1:0] Y;
// Indirection necessary since mapping
// back to $mul will cause recursion
generate
if (A_SIGNED && !B_SIGNED)
\$__soft_mul #(
.A_SIGNED(A_SIGNED),
.B_SIGNED(1),
.A_WIDTH(A_WIDTH),
.B_WIDTH(B_WIDTH+1),
.Y_WIDTH(Y_WIDTH)
) _TECHMAP_REPLACE_ (
.A(A),
.B({1'b0,B}),
.Y(Y)
);
else if (!A_SIGNED && B_SIGNED)
\$__soft_mul #(
.A_SIGNED(1),
.B_SIGNED(B_SIGNED),
.A_WIDTH(A_WIDTH+1),
.B_WIDTH(B_WIDTH),
.Y_WIDTH(Y_WIDTH)
) _TECHMAP_REPLACE_ (
.A({1'b0,A}),
.B(B),
.Y(Y)
);
else
\$__soft_mul #(
.A_SIGNED(A_SIGNED),
.B_SIGNED(B_SIGNED),
.A_WIDTH(A_WIDTH),
.B_WIDTH(B_WIDTH),
.Y_WIDTH(Y_WIDTH)
) _TECHMAP_REPLACE_ (
.A(A),
.B(B),
.Y(Y)
);
endgenerate
endmodule
/*
* yosys -- Yosys Open SYnthesis Suite
*
* Copyright (C) 2012 Claire Xenia Wolf <claire@yosyshq.com>
* 2019 Eddie Hung <eddie@fpgeh.com>
* 2019 David Shah <dave@ds0.me>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* ---
*
* Tech-mapping rules for decomposing arbitrarily-sized $mul cells
* into an equivalent collection of smaller `DSP_NAME cells (with the
* same interface as $mul) no larger than `DSP_[AB]_MAXWIDTH, attached
* to $shl and $add cells.
*
*/
`ifndef DSP_A_MAXWIDTH
$fatal(1, "Macro DSP_A_MAXWIDTH must be defined");
`endif
`ifndef DSP_B_MAXWIDTH
$fatal(1, "Macro DSP_B_MAXWIDTH must be defined");
`endif
`ifndef DSP_B_MAXWIDTH
$fatal(1, "Macro DSP_B_MAXWIDTH must be defined");
`endif
`ifndef DSP_A_MAXWIDTH_PARTIAL
`define DSP_A_MAXWIDTH_PARTIAL `DSP_A_MAXWIDTH
`endif
`ifndef DSP_B_MAXWIDTH_PARTIAL
`define DSP_B_MAXWIDTH_PARTIAL `DSP_B_MAXWIDTH
`endif
`ifndef DSP_NAME
$fatal(1, "Macro DSP_NAME must be defined");
`endif
`define MAX(a,b) (a > b ? a : b)
`define MIN(a,b) (a < b ? a : b)
(* techmap_celltype = "$mul $__mul" *)
module _80_mul (A, B, Y);
parameter A_SIGNED = 0;
parameter B_SIGNED = 0;
parameter A_WIDTH = 1;
parameter B_WIDTH = 1;
parameter Y_WIDTH = 1;
(* force_downto *)
input [A_WIDTH-1:0] A;
(* force_downto *)
input [B_WIDTH-1:0] B;
(* force_downto *)
output [Y_WIDTH-1:0] Y;
parameter _TECHMAP_CELLTYPE_ = "";
generate
if (0) begin end
`ifdef DSP_A_MINWIDTH
else if (A_WIDTH < `DSP_A_MINWIDTH)
wire _TECHMAP_FAIL_ = 1;
`endif
`ifdef DSP_B_MINWIDTH
else if (B_WIDTH < `DSP_B_MINWIDTH)
wire _TECHMAP_FAIL_ = 1;
`endif
`ifdef DSP_Y_MINWIDTH
else if (Y_WIDTH < `DSP_Y_MINWIDTH)
wire _TECHMAP_FAIL_ = 1;
`endif
`ifdef DSP_SIGNEDONLY
else if (_TECHMAP_CELLTYPE_ == "$mul" && !A_SIGNED && !B_SIGNED)
\$mul #(
.A_SIGNED(1),
.B_SIGNED(1),
.A_WIDTH(A_WIDTH + 1),
.B_WIDTH(B_WIDTH + 1),
.Y_WIDTH(Y_WIDTH)
) _TECHMAP_REPLACE_ (
.A({1'b0, A}),
.B({1'b0, B}),
.Y(Y)
);
`endif
else if (_TECHMAP_CELLTYPE_ == "$mul" && A_WIDTH < B_WIDTH)
\$mul #(
.A_SIGNED(B_SIGNED),
.B_SIGNED(A_SIGNED),
.A_WIDTH(B_WIDTH),
.B_WIDTH(A_WIDTH),
.Y_WIDTH(Y_WIDTH)
) _TECHMAP_REPLACE_ (
.A(B),
.B(A),
.Y(Y)
);
else begin
wire [1023:0] _TECHMAP_DO_ = "proc; clean";
`ifdef DSP_SIGNEDONLY
localparam sign_headroom = 1;
`else
localparam sign_headroom = 0;
`endif
genvar i;
if (A_WIDTH > `DSP_A_MAXWIDTH) begin
localparam n = (A_WIDTH-`DSP_A_MAXWIDTH+`DSP_A_MAXWIDTH_PARTIAL-sign_headroom-1) / (`DSP_A_MAXWIDTH_PARTIAL-sign_headroom);
localparam partial_Y_WIDTH = `MIN(Y_WIDTH, B_WIDTH+`DSP_A_MAXWIDTH_PARTIAL);
localparam last_A_WIDTH = A_WIDTH-n*(`DSP_A_MAXWIDTH_PARTIAL-sign_headroom);
localparam last_Y_WIDTH = B_WIDTH+last_A_WIDTH;
if (A_SIGNED && B_SIGNED) begin : blk
(* force_downto *)
wire signed [partial_Y_WIDTH-1:0] partial [n-1:0];
(* force_downto *)
wire signed [last_Y_WIDTH-1:0] last_partial;
(* force_downto *)
wire signed [Y_WIDTH-1:0] partial_sum [n:0];
end
else begin : blk
(* force_downto *)
wire [partial_Y_WIDTH-1:0] partial [n-1:0];
(* force_downto *)
wire [last_Y_WIDTH-1:0] last_partial;
(* force_downto *)
wire [Y_WIDTH-1:0] partial_sum [n:0];
end
for (i = 0; i < n; i=i+1) begin:sliceA
\$__mul #(
.A_SIGNED(sign_headroom),
.B_SIGNED(B_SIGNED),
.A_WIDTH(`DSP_A_MAXWIDTH_PARTIAL),
.B_WIDTH(B_WIDTH),
.Y_WIDTH(partial_Y_WIDTH)
) mul (
.A({{sign_headroom{1'b0}}, A[i*(`DSP_A_MAXWIDTH_PARTIAL-sign_headroom) +: `DSP_A_MAXWIDTH_PARTIAL-sign_headroom]}),
.B(B),
.Y(blk.partial[i])
);
// TODO: Currently a 'cascade' approach to summing the partial
// products is taken here, but a more efficient 'binary
// reduction' approach also exists...
if (i == 0)
assign blk.partial_sum[i] = blk.partial[i];
else
assign blk.partial_sum[i] = (blk.partial[i] << (* mul2dsp *) i*(`DSP_A_MAXWIDTH_PARTIAL-sign_headroom)) + (* mul2dsp *) blk.partial_sum[i-1];
end
\$__mul #(
.A_SIGNED(A_SIGNED),
.B_SIGNED(B_SIGNED),
.A_WIDTH(last_A_WIDTH),
.B_WIDTH(B_WIDTH),
.Y_WIDTH(last_Y_WIDTH)
) sliceA.last (
.A(A[A_WIDTH-1 -: last_A_WIDTH]),
.B(B),
.Y(blk.last_partial)
);
assign blk.partial_sum[n] = (blk.last_partial << (* mul2dsp *) n*(`DSP_A_MAXWIDTH_PARTIAL-sign_headroom)) + (* mul2dsp *) blk.partial_sum[n-1];
assign Y = blk.partial_sum[n];
end
else if (B_WIDTH > `DSP_B_MAXWIDTH) begin
localparam n = (B_WIDTH-`DSP_B_MAXWIDTH+`DSP_B_MAXWIDTH_PARTIAL-sign_headroom-1) / (`DSP_B_MAXWIDTH_PARTIAL-sign_headroom);
localparam partial_Y_WIDTH = `MIN(Y_WIDTH, A_WIDTH+`DSP_B_MAXWIDTH_PARTIAL);
localparam last_B_WIDTH = B_WIDTH-n*(`DSP_B_MAXWIDTH_PARTIAL-sign_headroom);
localparam last_Y_WIDTH = A_WIDTH+last_B_WIDTH;
if (A_SIGNED && B_SIGNED) begin : blk
(* force_downto *)
wire signed [partial_Y_WIDTH-1:0] partial [n-1:0];
(* force_downto *)
wire signed [last_Y_WIDTH-1:0] last_partial;
(* force_downto *)
wire signed [Y_WIDTH-1:0] partial_sum [n:0];
end
else begin : blk
(* force_downto *)
wire [partial_Y_WIDTH-1:0] partial [n-1:0];
(* force_downto *)
wire [last_Y_WIDTH-1:0] last_partial;
(* force_downto *)
wire [Y_WIDTH-1:0] partial_sum [n:0];
end
for (i = 0; i < n; i=i+1) begin:sliceB
\$__mul #(
.A_SIGNED(A_SIGNED),
.B_SIGNED(sign_headroom),
.A_WIDTH(A_WIDTH),
.B_WIDTH(`DSP_B_MAXWIDTH_PARTIAL),
.Y_WIDTH(partial_Y_WIDTH)
) mul (
.A(A),
.B({{sign_headroom{1'b0}}, B[i*(`DSP_B_MAXWIDTH_PARTIAL-sign_headroom) +: `DSP_B_MAXWIDTH_PARTIAL-sign_headroom]}),
.Y(blk.partial[i])
);
// TODO: Currently a 'cascade' approach to summing the partial
// products is taken here, but a more efficient 'binary
// reduction' approach also exists...
if (i == 0)
assign blk.partial_sum[i] = blk.partial[i];
else
assign blk.partial_sum[i] = (blk.partial[i] << (* mul2dsp *) i*(`DSP_B_MAXWIDTH_PARTIAL-sign_headroom)) + (* mul2dsp *) blk.partial_sum[i-1];
end
\$__mul #(
.A_SIGNED(A_SIGNED),
.B_SIGNED(B_SIGNED),
.A_WIDTH(A_WIDTH),
.B_WIDTH(last_B_WIDTH),
.Y_WIDTH(last_Y_WIDTH)
) mul_sliceB_last (
.A(A),
.B(B[B_WIDTH-1 -: last_B_WIDTH]),
.Y(blk.last_partial)
);
assign blk.partial_sum[n] = (blk.last_partial << (* mul2dsp *) n*(`DSP_B_MAXWIDTH_PARTIAL-sign_headroom)) + (* mul2dsp *) blk.partial_sum[n-1];
assign Y = blk.partial_sum[n];
end
else begin
if (A_SIGNED) begin : blkA
wire signed [`DSP_A_MAXWIDTH-1:0] Aext = $signed(A);
end
else begin : blkA
wire [`DSP_A_MAXWIDTH-1:0] Aext = A;
end
if (B_SIGNED) begin : blkB
wire signed [`DSP_B_MAXWIDTH-1:0] Bext = $signed(B);
end
else begin : blkB
wire [`DSP_B_MAXWIDTH-1:0] Bext = B;
end
`DSP_NAME #(
.A_SIGNED(A_SIGNED),
.B_SIGNED(B_SIGNED),
.A_WIDTH(`DSP_A_MAXWIDTH),
.B_WIDTH(`DSP_B_MAXWIDTH),
.Y_WIDTH(`MIN(Y_WIDTH,`DSP_A_MAXWIDTH+`DSP_B_MAXWIDTH)),
) _TECHMAP_REPLACE_ (
.A(blkA.Aext),
.B(blkB.Bext),
.Y(Y)
);
end
end
endgenerate
endmodule
(* techmap_celltype = "$mul $__mul" *)
module _90_soft_mul (A, B, Y);
parameter A_SIGNED = 0;
parameter B_SIGNED = 0;
parameter A_WIDTH = 1;
parameter B_WIDTH = 1;
parameter Y_WIDTH = 1;
(* force_downto *)
input [A_WIDTH-1:0] A;
(* force_downto *)
input [B_WIDTH-1:0] B;
(* force_downto *)
output [Y_WIDTH-1:0] Y;
// Indirection necessary since mapping
// back to $mul will cause recursion
generate
if (A_SIGNED && !B_SIGNED)
\$__soft_mul #(
.A_SIGNED(A_SIGNED),
.B_SIGNED(1),
.A_WIDTH(A_WIDTH),
.B_WIDTH(B_WIDTH+1),
.Y_WIDTH(Y_WIDTH)
) _TECHMAP_REPLACE_ (
.A(A),
.B({1'b0,B}),
.Y(Y)
);
else if (!A_SIGNED && B_SIGNED)
\$__soft_mul #(
.A_SIGNED(1),
.B_SIGNED(B_SIGNED),
.A_WIDTH(A_WIDTH+1),
.B_WIDTH(B_WIDTH),
.Y_WIDTH(Y_WIDTH)
) _TECHMAP_REPLACE_ (
.A({1'b0,A}),
.B(B),
.Y(Y)
);
else
\$__soft_mul #(
.A_SIGNED(A_SIGNED),
.B_SIGNED(B_SIGNED),
.A_WIDTH(A_WIDTH),
.B_WIDTH(B_WIDTH),
.Y_WIDTH(Y_WIDTH)
) _TECHMAP_REPLACE_ (
.A(A),
.B(B),
.Y(Y)
);
endgenerate
endmodule

2
techlibs/ecp5/arith_map.v
View File

@ -2,7 +2,7 @@
* yosys -- Yosys Open SYnthesis Suite
*
* Copyright (C) 2012 Claire Xenia Wolf <claire@yosyshq.com>
* Copyright (C) 2018 gatecat <gatecat@ds0.me>
* Copyright (C) 2018 David Shah <dave@ds0.me>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above

2
techlibs/ecp5/ecp5_gsr.cc
View File

@ -2,7 +2,7 @@
* yosys -- Yosys Open SYnthesis Suite
*
* Copyright (C) 2012 Claire Xenia Wolf <claire@yosyshq.com>
* Copyright (C) 2019 gatecat <gatecat@ds0.me>
* Copyright (C) 2019 David Shah <dave@ds0.me>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above

2
techlibs/ecp5/synth_ecp5.cc
View File

@ -2,7 +2,7 @@
* yosys -- Yosys Open SYnthesis Suite
*
* Copyright (C) 2012 Claire Xenia Wolf <claire@yosyshq.com>
* Copyright (C) 2018 gatecat <gatecat@ds0.me>
* Copyright (C) 2018 David Shah <dave@ds0.me>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above

2
techlibs/gowin/arith_map.v
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@ -2,7 +2,7 @@
* yosys -- Yosys Open SYnthesis Suite
*
* Copyright (C) 2012 Claire Xenia Wolf <claire@yosyshq.com>
* Copyright (C) 2018 gatecat <gatecat@ds0.me>
* Copyright (C) 2018 David Shah <dave@ds0.me>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above

62
techlibs/intel_alm/common/bram_m20k_map.v
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@ -1,31 +1,31 @@
module __MISTRAL_M20K_SDP(CLK1, A1ADDR, A1DATA, A1EN, B1ADDR, B1DATA, B1EN);
parameter CFG_ABITS = 10;
parameter CFG_DBITS = 20;
parameter CFG_ENABLE_A = 1;
parameter CFG_ENABLE_B = 1;
input CLK1;
input [CFG_ABITS-1:0] A1ADDR, B1ADDR;
input [CFG_DBITS-1:0] A1DATA;
output [CFG_DBITS-1:0] B1DATA;
input [CFG_ENABLE_A-1:0] A1EN, B1EN;
altsyncram #(
.operation_mode("dual_port"),
.ram_block_type("m20k"),
.widthad_a(CFG_ABITS),
.width_a(CFG_DBITS),
.widthad_b(CFG_ABITS),
.width_b(CFG_DBITS),
) _TECHMAP_REPLACE_ (
.address_a(A1ADDR),
.data_a(A1DATA),
.wren_a(A1EN),
.address_b(B1ADDR),
.q_b(B1DATA),
.clock0(CLK1),
.clock1(CLK1)
);
endmodule
module __MISTRAL_M20K_SDP(CLK1, A1ADDR, A1DATA, A1EN, B1ADDR, B1DATA, B1EN);
parameter CFG_ABITS = 10;
parameter CFG_DBITS = 20;
parameter CFG_ENABLE_A = 1;
parameter CFG_ENABLE_B = 1;
input CLK1;
input [CFG_ABITS-1:0] A1ADDR, B1ADDR;
input [CFG_DBITS-1:0] A1DATA;
output [CFG_DBITS-1:0] B1DATA;
input [CFG_ENABLE_A-1:0] A1EN, B1EN;
altsyncram #(
.operation_mode("dual_port"),
.ram_block_type("m20k"),
.widthad_a(CFG_ABITS),
.width_a(CFG_DBITS),
.widthad_b(CFG_ABITS),
.width_b(CFG_DBITS),
) _TECHMAP_REPLACE_ (
.address_a(A1ADDR),
.data_a(A1DATA),
.wren_a(A1EN),
.address_b(B1ADDR),
.q_b(B1DATA),
.clock0(CLK1),
.clock1(CLK1)
);
endmodule

2
techlibs/nexus/arith_map.v
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@ -2,7 +2,7 @@
* yosys -- Yosys Open SYnthesis Suite
*
* Copyright (C) 2012 Claire Xenia Wolf <claire@yosyshq.com>
* Copyright (C) 2018 gatecat <gatecat@ds0.me>
* Copyright (C) 2018 David Shah <dave@ds0.me>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above

2
techlibs/nexus/synth_nexus.cc
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@ -1,7 +1,7 @@
/*
* yosys -- Yosys Open SYnthesis Suite
*
* Copyright (C) 2020 gatecat <gatecat@ds0.me>
* Copyright (C) 2020 David Shah <dave@ds0.me>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above

22
tests/arch/common/counter.v
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@ -1,11 +1,11 @@
module top ( out, clk, reset );
output [7:0] out;
input clk, reset;
reg [7:0] out;
always @(posedge clk, posedge reset)
if (reset)
out <= 8'b0;
else
out <= out + 1;
endmodule
module top ( out, clk, reset );
output [7:0] out;
input clk, reset;
reg [7:0] out;
always @(posedge clk, posedge reset)
if (reset)
out <= 8'b0;
else
out <= out + 1;
endmodule

102
tests/arch/common/fsm.v
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@ -1,51 +1,51 @@
module fsm ( clock, reset, req_0, req_1, gnt_0, gnt_1 );
input clock,reset,req_0,req_1;
output gnt_0,gnt_1;
wire clock,reset,req_0,req_1;
reg gnt_0,gnt_1;
parameter SIZE = 3;
parameter IDLE = 3'b001;
parameter GNT0 = 3'b010;
parameter GNT1 = 3'b100;
parameter GNT2 = 3'b101;
reg [SIZE-1:0] state;
reg [SIZE-1:0] next_state;
always @ (posedge clock)
begin : FSM
if (reset == 1'b1) begin
state <= #1 IDLE;
gnt_0 <= 0;
gnt_1 <= 0;
end
else
case(state)
IDLE : if (req_0 == 1'b1) begin
state <= #1 GNT0;
gnt_0 <= 1;
end else if (req_1 == 1'b1) begin
gnt_1 <= 1;
state <= #1 GNT0;
end else begin
state <= #1 IDLE;
end
GNT0 : if (req_0 == 1'b1) begin
state <= #1 GNT0;
end else begin
gnt_0 <= 0;
state <= #1 IDLE;
end
GNT1 : if (req_1 == 1'b1) begin
state <= #1 GNT2;
gnt_1 <= req_0;
end
GNT2 : if (req_0 == 1'b1) begin
state <= #1 GNT1;
gnt_1 <= req_1;
end
default : state <= #1 IDLE;
endcase
end
endmodule
module fsm ( clock, reset, req_0, req_1, gnt_0, gnt_1 );
input clock,reset,req_0,req_1;
output gnt_0,gnt_1;
wire clock,reset,req_0,req_1;
reg gnt_0,gnt_1;
parameter SIZE = 3;
parameter IDLE = 3'b001;
parameter GNT0 = 3'b010;
parameter GNT1 = 3'b100;
parameter GNT2 = 3'b101;
reg [SIZE-1:0] state;
reg [SIZE-1:0] next_state;
always @ (posedge clock)
begin : FSM
if (reset == 1'b1) begin
state <= #1 IDLE;
gnt_0 <= 0;
gnt_1 <= 0;
end
else
case(state)
IDLE : if (req_0 == 1'b1) begin
state <= #1 GNT0;
gnt_0 <= 1;
end else if (req_1 == 1'b1) begin
gnt_1 <= 1;
state <= #1 GNT0;
end else begin
state <= #1 IDLE;
end
GNT0 : if (req_0 == 1'b1) begin
state <= #1 GNT0;
end else begin
gnt_0 <= 0;
state <= #1 IDLE;
end
GNT1 : if (req_1 == 1'b1) begin
state <= #1 GNT2;
gnt_1 <= req_0;
end
GNT2 : if (req_0 == 1'b1) begin
state <= #1 GNT1;
gnt_1 <= req_1;
end
default : state <= #1 IDLE;
endcase
end
endmodule

22
tests/arch/common/shifter.v
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@ -1,11 +1,11 @@
module top(out, clk, in);
output [7:0] out;
input signed clk, in;
reg signed [7:0] out = 0;
always @(posedge clk)
begin
out <= out >> 1;
out[7] <= in;
end
endmodule
module top(out, clk, in);
output [7:0] out;
input signed clk, in;
reg signed [7:0] out = 0;
always @(posedge clk)
begin
out <= out >> 1;
out[7] <= in;
end
endmodule

2
tests/simple/vloghammer.v
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@ -1,6 +1,6 @@
// test cases found using vloghammer
// https://github.com/YosysHQ/VlogHammer
// https://github.com/cliffordwolf/VlogHammer
module test01(a, y);
input [7:0] a;

2
tests/vloghtb/run-test.sh
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@ -3,7 +3,7 @@
set -ex
rm -rf Makefile refdat rtl scripts spec
wget -N https://yosyshq.net/yosys/nogit/vloghammer_tb.tar.bz2
wget -N http://yosyshq.net/yosys/nogit/vloghammer_tb.tar.bz2
tar --strip=1 -xjf vloghammer_tb.tar.bz2
make clean