My new blog addr: http://www.yanzhi.info/blog
Bitcoin Donations are accepted at 1Gwuhfzsm2qDEUUWQvx8WjhPBwehAoRhQx.
Jun 22, 2011
BitCoin Donations are accepted
Mar 6, 2011
dropbox recommendation
Sync your files online and across computers with @Dropbox. 2GB account is free! http://db.tt/bSicTC4
Backup your wordpress blog to Dropbox using the BackWPup plugin
Dec 24, 2010
Jan 4, 2010
Dec 31, 2009
Dec 21, 2009
多媒体SOC严重同质化
cpu+video+graphic+image+audio+interface构成了一个高性能的soc，类似这样的芯片出了一颗又一颗，大部分核心ip都是license，这些产品的核心竞争力在哪呢？未来竞争力又体现在何处？做digital设计的人员出路又在何方？
目前可以说嵌入式软件是产品差异化中最重要的一环，但随着处理能力的进一步增强，嵌入式软件会不会有第二个微软出现？Android？到那时候，这些做多媒体soc的公司的竞争力又还剩什么？
Oct 13, 2009
restore source code encrypted by 'protectip'
protectip from synplicity(in the synplify install directory) can encrypts VHDL and Verilog source files, it's a simple perl script which call the openssl for encryption.
The synplify tools can decrypt the source files before compiler, but the engineers can only read the encrypted text. so the ip be protected.
However, you can restore the source code if you got the password for ip encryption. I write the perl script for it.
Usage: decryptip
-in | input <Input File>
-out | output <Output File Name>
-c | cipher <Cipher - one of "des-cbc" "3des-cbc" "aes128-cbc">
-k | key <Symmetric Encryption Key in Text Format>
Example: ./decryptip -in protected_ip.v -out orig_ip.v -c des-cbc -k PASSWORD
Sep 20, 2009
IC设计书籍推荐
做这个几年了，不知道算不算入门了。把一些曾经看过的书籍中觉得不错的推荐给大家。
其中有几本模拟和版图类的书籍是别人给推荐的。
根据当当网的资料做了个网页，以后会持续更新，http://www.yanzhi.org/blog/book.htm
May 10, 2009
linux防止误删除的简单办法[Tips]
建立硬链接，ln 源文件 【链接名】
硬链接的作用就是允许一个文件拥有多个有效路径名，直到删除最后一个链接文件才会真正被删除
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