Recently I need a product to build up my experimenting embeded system. So, I googled many relative information of low power, low heat, no noise solutions.

 

I've found that VIA (a company in Taiwan, China) represented a series of mini-ITX(17cm * 17cm) and nano-ITX(12cm * 12cm) motherboard, which have integrated low power CPU.

 

I focused on the EPIA-EN model of mini-ITX motherboard.

 

It use VIA C7(1.5 Ghz) or VIA EDEN(1.2 Ghz) CPU, and with a DIMM slot support up to 1GB DDR II memory. It provides hardware decoder of MPEG-2 and HDTV, and even support D-Sub/TV out/6.1 HD Audio/many USB2 ports/2 UltraDMA IDE ports/2 SATA ports/1 PCI slot/1 RJ45 LAN port/1 Serial Port.

 

A full function system of EPIA-EN runs at only about 40watt. One day electric is about 0.96kWh. It is very suitable to be used in a tv-settop device. What's more, we can stop the harddisk to save power:)

 

EPIA-N or EPIA-NL are nano-ITX size motherboards.

 

They use VIA EDEN-N processor, and support almost all functions their larger borthers do. But they use SO-DIMM slot and DDR memory, thanks to the size, and also with one mini-PCI slot. It has 2 IDE, but only one SATA(I think it is enough :)).

 

At the same time, I've found some design of car-computers. They do have done great!

 

VIA has said on their web pages that "Full drivers for Linux".

 

May I DIY a Home Routining and Entertamenting Centre??

This is a good idea, I think :)

The position of SJTU, Minghang is:

31deg 1min 25sec N, 121deg 25min 43sec E

 

The position of SJTU, Xuhui is:

31deg 12min 4sec N, 121deg 25min 49sec E

 

Very interesting.

 

Photo of the SJTU, Minghang is out of date, cos. I cannot find the Building D, Buliding E, and Building F. Even the Yifu Tech. Building is under construction.

 

All these are a part of result caused by the latest update of many high resolution sat-photos at Google Earth.

 

Google have said that "about 1 of 3 population in the world can see their house through Google Earth now".

 

During the progress of finding my flat in Dalian, something very interesting happened.

 

I have found some Chinese words on the cover of a building. It should be "xxx stone".

 

I think the boss of that firm must have a long and good eye sight.

 

The Focus Media can make advertisments besides almost every elevator. Maybe, I can make them on the cover of almost all buildings :)

I have registered a counter account at the statcounter.com, and it provides an great view of log called "Region View".

 

I may know where did visits to my space come from.

 

To my surprise, There are 2 visits from France, 1 from America and even 1 from Germany.

 

So, I think, maybe, I  should start to improve my Engish level in writing English blogs.

最近帮客户配置服务器，由于需要在同一台服务器，同一个ip上面同时运行两个web服务。

 

其中一个是JBoss/Tomcat的，另一个是IIS6/Asp.Net2的，所以就用apache做前端，用代理＋虚拟主机（Proxy + Virtual Host）的方式，实现ip共享。

 

然有时访问IIS的站点的时候会发生一个奇怪的错误：

Proxy Error
The proxy server received an invalid response from an upstream server.
The proxy server could not handle the request GET /.

Reason: Error reading from remote server
-

Apache 2.2.2

 

经n多apache高手诊断，此乃一无药可救之病症。

 

经过再三努力后，终于选择放弃，自己写了一个HTTP Virtual Host Proxy服务器来进行虚拟主机的管理……

 

过两天把源代码整理一下放出来噢：）