<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[Gr1x's Blog]]></title><description><![CDATA[Embedded systems,Linux,Windows,EDA ....]]></description><link>https://blog.youkuaiyun.com/gr1x</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; gr1x]]></copyright><item><title><![CDATA[NFS Server]]></title><link>https://blog.youkuaiyun.com/gr1x/article/details/5975980</link><guid>https://blog.youkuaiyun.com/gr1x/article/details/5975980</guid><author>gr1x</author><pubDate>Sat, 30 Oct 2010 13:33:00 +0800</pubDate><description><![CDATA[tips for nfs]]></description><category></category></item><item><title><![CDATA[GCC's Conditionals with Omitted Operands]]></title><link>https://blog.youkuaiyun.com/gr1x/article/details/4784885</link><guid>https://blog.youkuaiyun.com/gr1x/article/details/4784885</guid><author>gr1x</author><pubDate>Sun, 08 Nov 2009 02:48:00 +0800</pubDate><description><![CDATA[ Conditionals with Omitted OperandsThe middle operand in a conditional expression may be omitted. Then if the first operand is nonzero, its value is the value of the conditional expression.There]]></description><category></category></item><item><title><![CDATA[likely,unlikely宏与GCC内建函数__BUILDIN_EXPECT]]></title><link>https://blog.youkuaiyun.com/gr1x/article/details/4131337</link><guid>https://blog.youkuaiyun.com/gr1x/article/details/4131337</guid><author>gr1x</author><pubDate>Tue, 28 Apr 2009 01:25:00 +0800</pubDate><description><![CDATA[function StorePage(){d=document;t=d.selection?(d.selection.type!=None?d.selection.createRange().text:):(d.getSelection?d.getSelection():);void(keyit=window.open(http://www.365key.com/storeit.]]></description><category></category></item><item><title><![CDATA[DDR2 ROUTING GUIDELINES]]></title><link>https://blog.youkuaiyun.com/gr1x/article/details/3944072</link><guid>https://blog.youkuaiyun.com/gr1x/article/details/3944072</guid><author>gr1x</author><pubDate>Sat, 28 Feb 2009 00:36:00 +0800</pubDate><description><![CDATA[ DDR2 ROUTING GUIDELINES:  All signals from the FPGA to DDR2 modules and to the VTTtermination resistors are 50-ohm transmission lines referenced to theground planes.The ground planes mu]]></description><category></category></item><item><title><![CDATA[General layout Guidelines]]></title><link>https://blog.youkuaiyun.com/gr1x/article/details/3944068</link><guid>https://blog.youkuaiyun.com/gr1x/article/details/3944068</guid><author>gr1x</author><pubDate>Sat, 28 Feb 2009 00:34:00 +0800</pubDate><description><![CDATA[General layout Guidelines1. Diode/LED footprint needs to have polarity. The symbol of the diode can be present inside the outline.2.Positive polarity for tantalum and electrolytic capacitors nee]]></description><category></category></item><item><title><![CDATA[DDR ROUTING GUIDELINES]]></title><link>https://blog.youkuaiyun.com/gr1x/article/details/3944061</link><guid>https://blog.youkuaiyun.com/gr1x/article/details/3944061</guid><author>gr1x</author><pubDate>Sat, 28 Feb 2009 00:30:00 +0800</pubDate><description><![CDATA[ DDR does requirecleaner reference signals, reduced setup and hold times, and matchedsignal lengths to reduce signal skew effects.Vrefshould be isolated from other nets, decoupled from both ]]></description><category></category></item><item><title><![CDATA[Kernel Symbols and CONFIG_MODVERSIONS]]></title><link>https://blog.youkuaiyun.com/gr1x/article/details/3930653</link><guid>https://blog.youkuaiyun.com/gr1x/article/details/3930653</guid><author>gr1x</author><pubDate>Tue, 24 Feb 2009 00:38:00 +0800</pubDate><description><![CDATA[ Contained within  linux-2.4.2 source, found it hereKernel Symbols and CONFIG_MODVERSIONS               -------------------------------------                                      Mark McLoughlin      ]]></description><category></category></item><item><title><![CDATA[笔记本安装Debian设置CPU的speedstep]]></title><link>https://blog.youkuaiyun.com/gr1x/article/details/3902354</link><guid>https://blog.youkuaiyun.com/gr1x/article/details/3902354</guid><author>gr1x</author><pubDate>Tue, 17 Feb 2009 20:38:00 +0800</pubDate><description><![CDATA[http://www.linux-wiki.cn/index.php/Debian%E4%BD%BF%E7%94%A8CPU%E9%A2%91%E7%8E%87%E8%B0%83%E8%8A%82 前言现在的CPU耗电很大，按需调节CPU频率有对节能有重要的意义，目前多数Linux发行版都已经默认启用了这个功能，但是Debian 4.0和Archlinux还没有，需要经过简单的设置才行。，]]></description><category></category></item><item><title><![CDATA[Telnet to Moto A780]]></title><link>https://blog.youkuaiyun.com/gr1x/article/details/3762224</link><guid>https://blog.youkuaiyun.com/gr1x/article/details/3762224</guid><author>gr1x</author><pubDate>Mon, 12 Jan 2009 19:49:00 +0800</pubDate><description><![CDATA[MontaVista Linux Consumer Electronics Edition 3.0Linux/armv5tel 2.4.20_mvlcee30-mainstone(none) login: rootLinux 192.168.1.11 2.4.20_mvlcee30-mainstone #7 Fri Feb 13 15:39:51 CST 2004 armv5tel unknown]]></description><category></category></item><item><title><![CDATA[HLR/VLR/AuC ]]></title><link>https://blog.youkuaiyun.com/gr1x/article/details/3743590</link><guid>https://blog.youkuaiyun.com/gr1x/article/details/3743590</guid><author>gr1x</author><pubDate>Sat, 10 Jan 2009 00:50:00 +0800</pubDate><description><![CDATA[TheHLR (Home Location Register) is a network database that stores andmanages all details of each mobile phone subscriber that is registeredin the corresponding GSM core network. Specifically, th]]></description><category></category></item><item><title><![CDATA[Motorola cellphone Firmware]]></title><link>https://blog.youkuaiyun.com/gr1x/article/details/3718730</link><guid>https://blog.youkuaiyun.com/gr1x/article/details/3718730</guid><author>gr1x</author><pubDate>Tue, 06 Jan 2009 01:43:00 +0800</pubDate><description><![CDATA[Quoted from http://wiki.openezx.org/Original_firmware_versionsOfficial Firmware Motorola distributes several variants of firmware for the A780 specialized for various regions, feature sets, etc.]]></description><category></category></item><item><title><![CDATA[Motorola's EMU(Enhanced Mini USB)]]></title><link>https://blog.youkuaiyun.com/gr1x/article/details/3715775</link><guid>https://blog.youkuaiyun.com/gr1x/article/details/3715775</guid><author>gr1x</author><pubDate>Mon, 05 Jan 2009 19:07:00 +0800</pubDate><description><![CDATA[Quoted from “http://wiki.openezx.org/EMU”The A780 has a mini USB connector that motorola calls "Enhanced MiniUSB" or in short "EMU". The Enhancement consists of several differentmodes that the por]]></description><category></category></item><item><title><![CDATA[How to set up usblan and telnet for A780 in 3 easy steps]]></title><link>https://blog.youkuaiyun.com/gr1x/article/details/3706771</link><guid>https://blog.youkuaiyun.com/gr1x/article/details/3706771</guid><author>gr1x</author><pubDate>Sun, 04 Jan 2009 22:05:00 +0800</pubDate><description><![CDATA[Switch your device to usblan mode.Enter the "Setup" application on your device.  Configure "USB Mode" to "Modem".Connect your device to your PC with the USB cable. Youll need to doeverything after ]]></description><category></category></item><item><title><![CDATA[Xilinx's ibis and pkg file ]]></title><link>https://blog.youkuaiyun.com/gr1x/article/details/3543403</link><guid>https://blog.youkuaiyun.com/gr1x/article/details/3543403</guid><author>gr1x</author><pubDate>Wed, 17 Dec 2008 22:30:00 +0800</pubDate><description><![CDATA[http://www.xilinx.com/support/answers/21632.htmHow do I integrate per pin parasitic packagedata (in the .pkg file) provided in the IBIS archive into the IBISfile? How do I ensure that the latest I]]></description><category></category></item><item><title><![CDATA[DCI impedance value]]></title><link>https://blog.youkuaiyun.com/gr1x/article/details/3517144</link><guid>https://blog.youkuaiyun.com/gr1x/article/details/3517144</guid><author>gr1x</author><pubDate>Mon, 15 Dec 2008 00:50:00 +0800</pubDate><description><![CDATA[http://www.xilinx.com/support/answers/11450.htmVirtex-II/Virtex-II Pro/Virtex-4/Virtex-5IBIS/SPICE models - How does an IBIS or SPICE simulation account forthe DCI impedance value?            ]]></description><category></category></item><item><title><![CDATA[V5 IBIS model of SSTL DCI ]]></title><link>https://blog.youkuaiyun.com/gr1x/article/details/3507105</link><guid>https://blog.youkuaiyun.com/gr1x/article/details/3507105</guid><author>gr1x</author><pubDate>Sat, 13 Dec 2008 00:28:00 +0800</pubDate><description><![CDATA[V5 IBIS model of SSTL DCI Howdy all.I havnt been able to locate infomation on this, so I apologize if this has been discussed before.I am doing some signal integrity simulations between a V5 LX110T a]]></description><category></category></item><item><title><![CDATA[Unable to handle kernel paging request for data at address 0x00000000]]></title><link>https://blog.youkuaiyun.com/gr1x/article/details/2908505</link><guid>https://blog.youkuaiyun.com/gr1x/article/details/2908505</guid><author>gr1x</author><pubDate>Wed, 10 Sep 2008 12:23:00 +0800</pubDate><description><![CDATA[Linux version 2.6.26.3 (gr1x@mars) (gcc version 4.2.2) #1 Mon Sep 8 23:39:50 CS8console [udbg0] enabledsetup_arch: bootmemarch: exitZone PFN ranges:  DMA             0 ->   131072  Normal     131072 -]]></description><category></category></item><item><title><![CDATA[通过dump内存中printk的__log_buf地址查看Linux启动部分的错误]]></title><link>https://blog.youkuaiyun.com/gr1x/article/details/2906902</link><guid>https://blog.youkuaiyun.com/gr1x/article/details/2906902</guid><author>gr1x</author><pubDate>Wed, 10 Sep 2008 00:20:00 +0800</pubDate><description><![CDATA[已经将u-boot移植到了自己做的demo板上，现在开始移植linux PowerPC内核，前两天用bootm引导内核，当执行到：        /*         * Linux Kernel Parameters (passing board info data):         *   r3: ptr to board info data         *   r4: initrd_s]]></description><category></category></item><item><title><![CDATA[Vim Tips]]></title><link>https://blog.youkuaiyun.com/gr1x/article/details/2882066</link><guid>https://blog.youkuaiyun.com/gr1x/article/details/2882066</guid><author>gr1x</author><pubDate>Thu, 04 Sep 2008 19:08:00 +0800</pubDate><description><![CDATA[    1、用vi 复制第5行到第10行并粘贴到第12行之后：    方法1：         光标放到第五行，        输入：y6y        光标放到第12行，        输入：p    方法2：        命令行模式下输入         :5,10 co 12    方法3：        光标移到起始行，输入ma        光标移到结束行，输入mb]]></description><category></category></item><item><title><![CDATA[IPv6 FAQ]]></title><link>https://blog.youkuaiyun.com/gr1x/article/details/2863155</link><guid>https://blog.youkuaiyun.com/gr1x/article/details/2863155</guid><author>gr1x</author><pubDate>Mon, 01 Sep 2008 20:41:00 +0800</pubDate><description><![CDATA[1. 互联网是怎样产生的？20世纪60年代初，人们为了提高计算机的性能，把几台计算机连接起来使用，这便是最初的网络。但这种网络实在是太简单了，不仅传输数据速度极慢，而且只要有一台计算机出现故障，就会导致整个网络无法运行下去。　　到了60年代末期，美国国防部下属的高级研究项目管理局完成了计算机网络的改造任务，并把它称为阿帕网（APPAnet），阿帕网是由许多局域网组成的，它通过电话线相连]]></description><category></category></item></channel></rss>