石器时代
最近学了点无线通讯的东西，还有点数电的。很多是复习十年前的电路、模电课程，想来真是很惭愧，对不起学校的老师啊。其实也都没几块钱的东西，插插面包板就行了，可是我居然有不少看不懂了。看见数字处理器俺倒不怵，可是看见三极管我就没底了......
买个开发板玩玩吧，其实我们这些搞软件的家伙很多做不了的事情对于真正的 EE 工程师来说实在是小事一桩。我跟女朋友说了，我要是活到六七十岁，一定会搞到石器......
Xdelta for VM Image Patching
I spent hours to transfer a VM image to a remote host and find the most stable transfer method is Bittorrent. Now, I just want to avoid transfering another one for minor changes. Some thing like binary patch is required.
Fortunately, I found xdelta, a tool for binary diff and patching. After modified some files in the VM, I compared it with the original VM disk and got a zipped patch of about 100KB. So, with xdelta, it's now very easy to generate patches of binary files and to create incremental backups.
The version I used under Ubuntu provides a parameter "-m", which limits the memory size used by xdelta. This is important for diffing and patching large files, i.e. VM images. Actually, I tried bsdiff before xdelta, but failed because it used up all memory.
Labels: Virtualization
Importing Sample Projects Into Carbide C++
I got some packages of Symbian S60 C++ example projects, and spent some time to test it. It's easy to import these projects into Carbide C++. Just select "File" -> "Import..." -> "Symbian OS", and find your bld.inf file. See the above screenshot.
Labels: Mobile, Symbian
Bookmarklets for Opera Mini at Wap Review: "I think that all versions of Opera Mini support bookmarkets, I used them successfully in 3.1 (both low memory and high memory versions) and 4.0. "
I used to fail to call bookmarklets with Opera Mini 4.0 beta. So, when 4.0 is officially released, I still kept my Opera Mini 3.0, since I need the feature of bookmarklet. That's the key feature I need for blogging and del.icio.us .
Finally, when it's provied by wapreview.com that Opera Mini 4.0 also support bookmarklets, I switched to it. It works fine now.
Labels: Mobile, Symbian
