今天看到Primace4.2.1正式发布，据说已经解决了以前我发现的一些缺陷。先下载下来试试。该软件需要到以下官方网址下载。
http://www.capital-micro.com/download_software_p4.htm

== What's new in primace 4.2.1
. Release Soft IP "ECC(v1)"
. Release Soft IP "Can2.0(v1)"
. Release Soft IP "SPI_controller(v2)", support 8bits,16bits and 32bits
. Release Soft IP "Uart(v2)",with transmit and receive FIFO, support 5,6,7,8bits
. Release Soft IP "FIFO(v1.1)", change parameter (prog_full/empty_type) type from string to int
. Support "GBUF", use global resource to route user signal
. Support "DELAY BUF", use to insert extra delay
. Protected Verilog and RSA Encryption Solution
. Physical synthesis features for more stable design implementation
* Power reset
* Disable LBUF enable usage
* Disable Collapse constant adder and constant comparator by default
* Remove VCC drive for LUT4C
. New Language feature support
. Message Enhancement
. Make the timing data more accurate
. Fix some bugs to improve the performance and usablity.
. The old encryption method about soft ip will be not supported

看以上更新内容，最让我心动的是增加可CAN控制器IP。呵呵！不错！希望以太网控制器的IP也能加上。