Category Archives: Memo

Bug with GCC and Qt 5.7.0

When I build a Qt library from source, everything seems ok, but when the Qt example run, it show segmentation fault… Why do I compile from source, because my CPU on server not support SSE2 >_< So I do some … Continue reading

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Build openssl for windows

First, download source code: https://www.openssl.org/source/openssl-1.0.2h.tar.gz Second, download ActivePerl https://www.activestate.com/activeperl Third, download mingw64 https://sourceforge.net/projects/mingw-w64/files/Toolchains%20targetting%20Win32/

And I compile mingw version under xubuntu 16.04 with mingw32 installed.

Have fun:P This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. … Continue reading

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Custom Ubuntu live CD

Ubuntu live cd can startup on u-disk, so just test with this media.

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Bug in data2mem…

I using data2mem to replace data in BlockRAM, It confused me when I try to replace BlockRAM data in Spartan6 Devices. There are correct in BRAM16 with 8bits and 16bits, only error BRAM18 with 18bits. Update: bug exist in ISE … Continue reading

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Test openwrt under qemu-system-x86

I have ar9331 wifi module, It is better to emulate openwrt on QEMU, and learn it under x86, then try ar9331. After searching on Google, I found openwrt for x86 and qemu 2.5.0.

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Google Chrome freezing and beep

I upgraded Chrome from 43 to 46 on PC. When open new page, it freezing for 3-5 seconds randomly, sound ‘beep’, then normal… But Chrome 26 to 46 at Thinkpad x200 work fine, no freeze happend! Maybe hardware problem or … Continue reading

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google拼音输入法和google chrome冲突……

本来用得好好的,一直是Chrome + Google Pinyin 2.7,将Chrome升级到46后,用Chrome打开网页经常电脑卡死,鼠标也不能移动,但是音乐还在播放,然后几秒钟后恢复。一直以为是Samsung SSD的问题(另外一个用Sandisk SSD没问题)。 然后各种换……最后发现安装1.23版本的Google Pinyin输入法就好很多了,至少不会这么频繁的卡死。 所以可能的原因是: Samsung SDD读写可能在某些高并发的时候有较大的延时,毕竟Sandisk的没问题,LITEON的也没问题 Google Pinyin 2.7和Chrome46冲突,但是为啥在其他SSD上没这个问题。输入法和浏览器对硬盘的访问都不小吧 继续测试中,看看会不会再有其他的现象。

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About microblaze architecture version

I work on microblaze recently. And mb32 is confuse me.There are not architecture version? or instruction set version? So I check all mb_ref_guide.pdf I have. This is microblaze version list. Begin from 7.1i there are Processor Version Register 0 (PVR0) … Continue reading

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python version and visual c++ version

在编译Python扩展的时候常常会遇到版本不匹配的问题,以下搜集了常见的版本的VC版本的对应关系。 * MSC v1310: Visual Studio 2003 * Python 2.4.x Python 2.5.x * MSC v1500: Visual Studio 2008 * Python 2.6.x Python 2.7.x Python 3.0.x Python 3.1.x Python 3.2.x * MSC v1600: Visual Studio 2010 * Python 3.3.x Python 3.4.x

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fake FT232RL :(

original photo from http://zeptobars.ru/en/read/FTDI-FT232RL-real-vs-fake-supereal

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