Sync files in Windows

There is the software and link. This is a build-in software for window OS

http://www.microsoft.com/en-us/download/details.aspx?id=15155

[PCB] My PCB Design Flow

Because of some reasons, I write the following for Sharing and Education Purpose.

Hope this helps all visitors.

This piece of work is in Chinese / Cantonese. Sorry for Non-Cantonese Speakers.

好多人認為, 起一塊PCB, 就係畫Schematic 同畫Layout. 唔可以話錯, 但係只係事情既一小部份.起一起板,實情係坐係到諗同做”無聊野”既時間多過真係畫.

Okay. 咁啫係要做咩? 我通常會有一個咁既Flow

https://docs.google.com/document/d/1UnauGLrbjLl5it3u1mnhnsCIaINrPEtgAkW-ldyX2bY/edit

[Cadence] Corner Simulation + Cadence in Youtube

Youtube Video Channel.
Corner Simulation
http://www.youtube.com/watch?v=bsA2gCgyn6I

Guess What! Try out the Cadence Channel on Youtube.
I doubt you can get something from there.
http://www.youtube.com/user/CadenceDesign?feature=watch

[Website] Circuit Design site

Good Website with lots of references.
http://www2.ece.ohio-state.edu/~bibyk/ee720/ee720.htm
http://www2.ece.ohio-state.edu/~bibyk/ece822/ece822.htm

[USB] USB in a nutshell

A very good Tutorial on USB.
Read this before you dealing with USB.
http://www.beyondlogic.org/usbnutshell/usb1.shtml

[FPGA] Xilinx FPGA Video Courses

Tons of Videos on FPGA Training.
http://www.xilinx.com/training/free-video-courses.htm

[CentOS]Divide the USB drive into multi-partition

There is the reference

http://www.linuxidc.com/Linux/2013-05/84183.htm

Basically, using fdisk in root mode for dividing the partition and using mkfs for format. The full path for those two tools are under /sbin

[CentOS]Change the system language

 Using root account, enter commands which is showed below

system-config-language

A window will pop up and you can choose the system language that you want.

Reboot the PC and finished.

[Linux]Create CentOS Live USB

There are various types of definition on Live USB

1. Using USB to install CentOS into a PC
2. Boost the live CD mode from a USB
3. Divide the USB into two part for boost and install (only suitable for a single PC)
4. Install CentOS into a USB drive and boost on any PC

And I would like to do the fourth one.
In fact, using this software and follow the instruction in the software is OK!!

http://www.linuxliveusb.com/en/download

[Testing] Power Supply Testing

Below is a Video Series from TI. Including how testing can be carried out against a power supply unit.
Good for Power Management designers.

The video includes testing plan on:

1. Efficiency  
2. Noise
3. Stability

http://e2e.ti.com/blogs_/b/powerhouse/archive/2013/03/26/engineerit-video-series-testing-power-supplies.aspx?DCMP=hpa_aaj&HQS=em-v-2q2013-aaj&sp_rid_pod4=OTI4Mzg3NzM2MgS2&sp_mid_pod4=41474304

Microsoft office equation editor shortkey

As Title:

http://www.baylor.edu/content/services/document.php/118901.pdf

[Unix/Linux] Command List

There is the document.

http://www.linux265.com/download/linux_cmd.pdf

[CentOS] Extend Logic Volume by LVM

Follow the steps:

http://www.turnkeylinux.org/blog/extending-lvm

More important is the logic step:
PV[s] (Physical Volumes) -> VG[s] (Volume Groups) -> LV[s] (Logical Volumes) -> Filesystems.

There is the picture:

http://www.howtogeek.com/howto/40702/how-to-manage-and-use-lvm-logical-volume-management-in-ubuntu/

We need to first add the physical Volume, it is possible by using gparted. And then using lvm for extend the Volume Group size. Next, increase the Logical Volumes. Finally is the Filesystems by using resize2fs.

Please note the those tools (lvm, resize2fs) are located at /sbin. We need to use them by:
cd /sbin
./lvm or ./resize2fs to do this

[Hspice, Cadence, IC615] Using Hapice as simulator in Cadence

Part A) Install Hspice

1. Install Hspice from synopsys http://www.synopsys.com/Support/LI/Installation/Pages/default.aspx

2. Install installer first for install hspice. It is something like IScape

3. Follow the instructure that they have

4. Complete installation of installer and Hspice

5. edit the cshrc.meta or place licence file

6. Now, you can use Hspice in Linux by command mode.


Part B) Include Hspice to IC615

1. Edit the script for including Hspice licence and path. You can refer the script that we have.

2. Using cadence as usual. Choose HspiceD as the simulator.

3. Enjoy and have fun!!!

[CentOS] Display Chinese Char

在自己的機器上裝了個CentOS5.5的虛擬機，做自己學習之用，今天想讓他支持中文，但是切換語言之後，中文顯示的都是方塊字，很是鬱悶，網上找了好 多文章，都是讓我修改、/etc/sysconfig/i18N這個文件，改完之後，注銷退出，沒用，重启好多次，也是沒用，後來看到原來只要安裝2個 RPM文件才可以：fonts-chinese-3.029-9.*.noarch.rpm   和 fonts-ISO8859-2*.rpm包之後再切換成中文，就搞掂了。。。

from: http://world77.blog.51cto.com/414605/472084

[CentOS] Mount NTFS HDD

1. 下載 rpmforge rpm-release
   
   i386: http://packages.sw.be/rpmforge-release/rpmforge-release-0.3.6-1.el5.rf.i386.rpm
   x86_64: http://packages.sw.be/rpmforge-release/rpmforge-release-0.3.6-1.el5.rf.x86_64.rpm
2. 執行
   

   rpm -Uhv rpmforge-release-0.3.6-1.$dist.rf.$arch.rpm



3. 執行

   yum install dkms dkms-fuse fuse-ntfs-3g

4. 完成 

from: http://tw.myblog.yahoo.com/weslyyen-0704/article?mid=1230

[Verilog] How to record a multi-dimensional reg/wire in your design?

Situation:
With $recordvar(); I can't find those 2D Array signal likes Block Memory or Wiring Matrix from the record.
We have to assign 1D Wire Array to read a single entry of the 2D Array. Not Good.

Solution:
shm_probe is the major stament, All 2D-Wire/Reg within tb.testUnit are being recorded.

$shm_open("record.shm");
$shm_probe(tb,("AC"),tb.testUnit,("ACM"));
....
$shm_close();

This works with Cadence NC-Verilog.

CentOS LVM Resize

Follow this steps:

Since the release of CentOS 5.5 we noticed that the default CentOS install assigns a considerable amount of its available storage space to Swap. If you don’t catch this during the installation don’t worry, Logical Volume Manager or LVM will rectify this post install.
LVM is a logical volume manager for the Linux kernel; it manages disk drives and similar mass-storage devices, in particular large ones. The term “volume” refers to a disk drive or partition thereof.

Before we start just some general housekeeping. The XEN virtual CentOS 5.5 server (base install) in this tutorial was assigned 10GB of storage with the default partitioning layout.
Let check the amount of disk space available on the file system.

# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
4.9G 2.4G 2.3G 51% /
/dev/xvda1 99M 23M 72M 25% /boot
tmpfs 4.0G 0 4.0G 0% /dev/shm

Let see the attributes of the logical volumes like size, read/write status, snapshot information

# lvdisplay
— Logical volume —
LV Name /dev/VolGroup00/LogVol00
VG Name VolGroup00
LV UUID oFXKGg-nBPo-Fk27-3ino-zaHZ-cEcv-fk0dS0
LV Write Access read/write
LV Status available
# open 1
LV Size 5.00 GB
Current LE 160
Segments 1
Allocation inherit
Read ahead sectors auto
– currently set to 256
Block device 253:0
— Logical volume —
LV Name /dev/VolGroup00/LogVol01
VG Name VolGroup00
LV UUID Ntffw7-dqPh-Rjhy-rWLv-BGA0-iGik-LoyHET
LV Write Access read/write
LV Status available
# open 1
LV Size 4.88 GB
Current LE 156
Segments 1
Allocation inherit
Read ahead sectors auto
– currently set to 256
Block device 253:1

Let’s begin but first turning off swap on the Swap Logical Volume

# swapoff /dev/VolGroup00/LogVol01

Once swap is off let’s take the disk space we require.

# lvresize -L -4GB /dev/VolGroup00/LogVol01
WARNING: Reducing active logical volume to 896.00 MB
THIS MAY DESTROY YOUR DATA (filesystem etc.)
Do you really want to reduce LogVol01? [y/n]: y
Reducing logical volume LogVol01 to 896.00 MB
Logical volume LogVol01 successfully resized

Now let’s add what we removed to the main Logical Volume.

# lvresize -L +4GB /dev/VolGroup00/LogVol00
Extending logical volume LogVol00 to 9.00 GB
Logical volume LogVol00 successfully resized

Resize the File System

# resize2fs -p /dev/VolGroup00/LogVol00
resize2fs 1.39 (29-May-2006)
Filesystem at /dev/VolGroup00/LogVol00 is mounted on /; on-line resizing required
Performing an on-line resize of /dev/VolGroup00/LogVol00 to 2359296 (4k) blocks.
The filesystem on /dev/VolGroup00/LogVol00 is now 2359296 blocks long.

Rebuild the swap partition.

# mkswap /dev/VolGroup00/LogVol01
Setting up swapspace version 1, size = 939520 kB

Turn swap on.

# swapon /dev/VolGroup00/LogVol01

Let’s check the amount of disk space available and LVM attributes to see if our changes took effect.

# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
8.8G 2.4G 6.0G 28% /
/dev/xvda1 99M 23M 72M 25% /boot
tmpfs 4.0G 0 4.0G 0% /dev/shm

# lvdisplay
— Logical volume —
LV Name /dev/VolGroup00/LogVol00
VG Name VolGroup00
LV UUID oFXKGg-nBPo-Fk27-3ino-zaHZ-cEcv-fk0dS0
LV Write Access read/write
LV Status available
# open 1
LV Size 9.00 GB
Current LE 288
Segments 2
Allocation inherit
Read ahead sectors auto
– currently set to 256
Block device 253:0
— Logical volume —
LV Name /dev/VolGroup00/LogVol01
VG Name VolGroup00
LV UUID Ntffw7-dqPh-Rjhy-rWLv-BGA0-iGik-LoyHET
LV Write Access read/write
LV Status available
# open 1
LV Size 896.00 MB
Current LE 28
Segments 1
Allocation inherit
Read ahead sectors auto
– currently set to 256
Block device 253:1

From: http://www.how2centos.com/centos-lvm-resizing-guide/
Read more: http://www.how2centos.com/centos-lvm-resizing-guide/#ixzz2HY0dzB6c

[Cadence] Incisive (ncsim/ncvlog) partially won't work with 32-bit system

As mentioned in title.
The disabled part is AMS related and compiling ahdl with C/C++ stuff.

CentOS 6.3 VNCSERVER setup

From: http://wiki.centos.org/HowTos/VNC-Server

1. Installing the required packages

The server package is called 'vnc-server'. Run the command: rpm -q vnc-server

The result will be either package vnc-server is not installed or something like vnc-server-4.0-11.el4.

If the server is not installed, install it with the command: yum install vnc-server

The client program is 'vnc'. You can use the command: yum install vnc to install the client if: rpm -q vnc shows that it is not already installed.

Make sure to install a window manager in order to get a full-featured GUI desktop. You can use the command yum groupinstall "GNOME Desktop Environment" to install the Gnome Desktop and requirements, for example. Other popular desktop environments are "KDE" and "XFCE-4.4". XFCE is more light-weight than Gnome or KDE and available from the "extras" repository.

If you are a minimalist, or simply testing, however, it is sufficient to have yum install a simple XTERM client: yum install xterm

If you are running CentOS 6, the command is yum groupinstall Desktop

If you are running CentOS 5, yum groupinstall "GNOME Desktop Environment" may complain about a missing libgaim.so.0. This is a known bug. Please see CentOS-5 FAQ for details.

If you are running CentOS 6, the server is: tigervnc-server not: vnc-server

2. Configuring un-encrypted VNC

We will be setting up VNC for 3 users. These will be 'larry', 'moe', and 'curly'

You will perform the following steps to configure your VNC server:

1. Create the VNC users accounts.
2. Edit the server configuration.
3. Set your users' VNC passwords.
4. Confirm that the vncserver will start and stop cleanly.
5. Create and customize xstartup scripts.
6. Amend the iptables.
7. Start the VNC service.
8. Test each VNC user.
9. Additional optional enhancements

2.1. Create the VNC user accounts

As root:

$ su -
# useradd larry
# useradd moe
# useradd curly
# passwd larry
# passwd moe
# passwd curly

2.2. Edit the server configuration

Edit /etc/sysconfig/vncservers, and add the following to the end of the file.

VNCSERVERS="1:larry 2:moe 3:curly"
VNCSERVERARGS[1]="-geometry 640x480"
VNCSERVERARGS[2]="-geometry 640x480"
VNCSERVERARGS[3]="-geometry 800x600"

Larry will have a 640 by 480 screen, as will Moe. Curly will have an 800 by 600 screen.

Note: This step is NOT out of sequence, but is placed here so that the next following step will fall adjacent to the step in which failure to perform it, will permit immediate fault diagnosis.

2.3. Set your users' VNC passwords

Switch user into the account for each user, and as noted below, run: vncpasswd This will create the ~/.vnc directory for that userid:

[~]# su - larry
[~]$ vncpasswd
[~]$ cd .vnc
[.vnc]$ ls
passwd
[.vnc]$ exit
[~]#

2.4. Confirm that the vncserver will start and stop cleanly

We will create the xstartup scripts by starting and stopping the vncserver as root. We also enable the vncserver service to be automatically started.

# /sbin/service   vncserver start
# /sbin/service   vncserver stop
# /sbin/chkconfig vncserver on

Note: if you omitted the preceding step of logging in as each configured user, and creating their ~/.vnc/ subdirectory, this test will fail.

2.5. Create xstartup scripts ( You may omit this step for CentOS 6 )

Login to each user and edit the xstartup script. To use Larry as an example, first login as larry

[~]$ cd .vnc
[.vnc] ls
mymachine.localnet:1.log  passwd  xstartup

Edit ~/.vnc/xstartup for each user. The original should appear as follows:

#!/bin/sh
# Uncomment the following two lines for normal desktop:
# unset SESSION_MANAGER
# exec /etc/X11/xinit/xinitrc
[ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup
[ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources
xsetroot -solid grey
vncconfig -iconic &
xterm -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" &
twm &

Add the line indicated below to assure that an xterm is always present, and uncomment the two lines as directed if you wish to run the user's normal desktop window manager in the VNC. Note that in the likely reduced resolution and color depth of a VNC window the full desktop will be rather cramped and a look bit odd. If you do not uncomment the two lines you will get a gray speckled background to the VNC window.

#!/bin/sh
# Add the following line to ensure you always have an xterm available.
( while true ; do xterm ; done ) &
# Uncomment the following two lines for normal desktop:
unset SESSION_MANAGER
exec /etc/X11/xinit/xinitrc
[ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup
[ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources
xsetroot -solid grey
vncconfig -iconic &
xterm -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" &
twm &

2.6. Amend the iptables

The iptables rules in /etc/sysconfig/ need to be amended to open the VNC ports; as needed, if a local ipv6 setup is being used, those need to be amended as well:

[root@xen-221 sysconfig]# cat iptables
# Firewall configuration written by system-config-firewall
# Manual customization of this file is not recommended.
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -i eth1 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp -m multiport --dports 5901:5903,6001:6003 -j ACCEPT
-A INPUT -j REJECT --reject-with icmp-host-prohibited
-A FORWARD -j REJECT --reject-with icmp-host-prohibited
COMMIT
[root@xen-221 sysconfig]#         

... and then restart the iptables:

# /sbin/service iptables restart

2.7. Start the VNC server

Start the vncserver as root.

# /sbin/service vncserver start

xauth:(stdin):1:bad display name "xxx:1" in "add" command解决

xauth:(stdin):1:bad display name "xxx:1" in "add" command解决

1. [root@host144 ~]# /etc/init.d/vncserver restart
2. Shutting down VNC server: 1:root 2:oracle [ OK ]
3. Starting VNC server: 1:root xauth: (stdin):1: bad display name "host144:1" in "add" command
4. 
   
5. New 'host144:1 (root)' desktop is host144:1
6. 
   
7. Starting applications specified in /root/.vnc/xstartup
8. Log file is /root/.vnc/host144:1.log
9. 
   
10. 2:oracle xauth: (stdin):1: bad display name "host144:2" in "add" command
11. 
    
12. New 'host144:2 (oracle)' desktop is host144:2
13. 
    
14. Starting applications specified in /home/oracle/.vnc/xstartup
15. Log file is /home/oracle/.vnc/host144:2.log
16. 
    
17. [ OK ]

解决方法：

1. [root@host144 .vnc]# cat /etc/hosts
2. 127.0.0.1 host144 localhost.localdomain localhost
3. 10.0.127.144 host144