2020-01-13硬件设计语言版本更新与Vivado 2018

VHDL和verilog是两种国际公认的硬件编程语言，版本更替如下：
IEEE Std 1364-2001_IEEE Standard for Verilog Hardware Description Language=>
IEEE Std 1364-2005_IEEE Standard for Verilog Hardware Description Language=>
IEEE Std 1800-2009_IEEE Standard for SystemVerilog(Vivado 2018.3支持部分功能)=>
IEEE Std 1800-2012_IEEE Standard for SystemVerilog=>
IEEE Std 1800-2017_IEEE Standard for SystemVerilog

IEEE Std 1076-1996_IEEE Standard VHDL Mathematical Packages=>
IEEE Std 1076-2000_IEEE Standard VHDL Language Reference Manual=>
IEEE Std 1076-2002_IEEE Standard VHDL Language Reference Manual=>
IEEE Std 1076-2008-IEEE Standard VHDL Language Reference Manual(Vivado 2018.3支持部分功能)=>
IEEE Std 1076-2019-IEEE Standard VHDL Language Reference Manual

Vivado 2018.3支持SystemVerilog的DPI功能。