VCD reader support by using external tool

[yosys.git] / CHANGELOG

diff --git a/CHANGELOG b/CHANGELOG
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 List of major changes and improvements between releases
 =======================================================
 
+Yosys 0.14 .. Yosys 0.14-dev
+--------------------------
+
+ * Verilog
+    - Fixed evaluation of constant functions with variables or arguments with
+      reversed dimensions
+    - Fixed elaboration of dynamic range assignments where the vector is
+      reversed or is not zero-indexed
+    - Added frontend support for time scale delay values (e.g., `#1ns`)
+
+ * SystemVerilog
+    - Added support for accessing whole sub-structures in expressions
+
+Yosys 0.13 .. Yosys 0.14
+--------------------------
+
+ * Various
+    - Added $bmux and $demux cells and related optimization patterns.
+
+ * New commands and options
+    - Added "bmuxmap" and "dmuxmap" passes 
+    - Added "-fst" option to "sim" pass for writing FST files
+    - Added "-r", "-scope", "-start", "-stop", "-at", "-sim", "-sim-gate",
+      "-sim-gold" options to "sim" pass for co-simulation
+
+ * Anlogic support
+    - Added support for BRAMs
+
+Yosys 0.12 .. Yosys 0.13
+--------------------------
+
+ * Various
+    - Use "read" command to parse HDL files from Yosys command-line
+    - Added "yosys -r <topmodule>" command line option
+    - write_verilog: dump zero width sigspecs correctly
+
+ * SystemVerilog
+    - Fixed regression preventing the use array querying functions in case
+      expressions and case item expressions
+    - Fixed static size casts inadvertently limiting the result width of binary
+      operations
+    - Fixed static size casts ignoring expression signedness
+    - Fixed static size casts not extending unbased unsized literals
+    - Added automatic `nosync` inference for local variables in `always_comb`
+      procedures which are always assigned before they are used to avoid errant
+      latch inference
+
+ * New commands and options
+    - Added "clean_zerowidth" pass
+
+ * Verific support
+    - Add YOSYS to the implicitly defined verilog macros in verific
+
+Yosys 0.11 .. Yosys 0.12
+--------------------------
+
+ * Various
+    - Added iopadmap native support for negative-polarity output enable
+    - ABC update
+
+ * SystemVerilog
+    - Support parameters using struct as a wiretype
+
+ * New commands and options
+    - Added "-genlib" option to "abc" pass
+    - Added "sta" very crude static timing analysis pass
+
+ * Verific support
+    - Fixed memory block size in import
+
+ * New back-ends
+    - Added support for GateMate FPGA from Cologne Chip AG
+
+ * Intel ALM support
+    - Added preliminary Arria V support
+
+
+Yosys 0.10 .. Yosys 0.11
+--------------------------
+
+ * Various
+    - Added $aldff and $aldffe (flip-flops with async load) cells
+
+ * SystemVerilog
+    - Fixed an issue which prevented writing directly to a memory word via a
+      connection to an output port
+    - Fixed an issue which prevented unbased unsized literals (e.g., `'1`) from
+      filling the width of a cell input
+    - Fixed an issue where connecting a slice covering the entirety of a signed
+      signal to a cell input would cause a failed assertion
+
+ * Verific support
+    - Importer support for {PRIM,WIDE_OPER}_DFF
+    - Importer support for PRIM_BUFIF1
+    - Option to use Verific without VHDL support
+    - Importer support for {PRIM,WIDE_OPER}_DLATCH{,RS}
+    - Added -cfg option for getting/setting Verific runtime flags
 
-Yosys 0.9 .. Yosys 0.9-dev
+Yosys 0.9 .. Yosys 0.10
 --------------------------
 
  * Various