Verilator

Verilator 3.800 2010/02/07

This is a major release including many SystemVerilog enhancements.

Application visible changes:

• SystemPerl is no longer required for tracing. Applications must use VerilatedVcdC class in place of SpTraceVcdC.

• SystemVerilog 1800-2009 is now the default language. Thus "global" etc are now keywords. See the --language option.

New features:

• Support SystemVerilog types "byte", "chandle", "int", "longint", "shortint", "time", "var" and "void" in variables and functions.

• Support "program", "package", "import" and $unit.

• Support typedef and enum. [by Donal Casey]

• Support direct programming interface (DPI) "import" and "export". Includes an extension to map user $system PLI calls to the DPI.

• Support assignments of multidimensional slices, bug170. [by Byron Bradley]

• Support multidimensional inputs/outputs, bug171. [by Byron Bradley]

• Support "reg [1:0][1:0][1:0]" and "reg x [3][2]", bug176. [Byron Bradley]

• Support declarations in loop initializers, bug172. [by Byron Bradley]

• Support $test$plusargs and $value$plusargs, but see the docs!

• Support $sformat and $swrite.

• Support 1800-2009 define defaults and `undefineall.

• Add -CFLAGS, -LDFLAGS, <file>.a, <file>.o, and <file>.so options.

• Speed compiles by avoiding including the STL iostream header. Application programs may need to include it themselves to avoid errors.

• Add experimental clock domain crossing checks.

• Add experimental --pipe-filter to filter all Verilog input.

• Add experimental config files to filter warnings outside of the source.

• Add VARHIDDEN warning when signal name hides module name.

• Support optional cell parenthesis, bug179. [by Byron Bradley]

• Support for loop i++, ++i, i--, --i, bug175. [by Byron Bradley]

• Support 1800-2009 /*comments*/ in define values.

• Add Makefile VM_GLOBAL_FAST, listing objects needed to link executables.

• Add --bbox-unsup option to black-box unsupported UDP tables.

• Add -Wno-MODDUP option to allow duplicate modules.

Bug fixes:

• Fix implicit variable issues, bug196, bug201. [Byron Bradley]

• Fix 'for' variable typing, bug205. [by Byron Bradley]

• Fix tracing with --pins-bv 1, bug195. [Michael S]

• Fix MSVC++ 2008 compile issues, bug209. [Amir Gonnen]

• Fix MinGW compilation, bug184, bug214. [by Shankar Giri, Amir Gonnen]

• Fix Cygwin 1.7.x compiler error with uint32_t, bug204. [Ivan Djordjevic]

• Fix `define argument mis-replacing system task of same name, bug191.

• Fix Verilator core dump on wide integer divides, bug178. [Byron Bradley]

• Fix lint_off/lint_on meta comments on same line as warning.