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Altera_Forum
Honored Contributor I
1,232 Views

DE2 KIt

Hi all 4rum! 

 

I'm running a VGA labs. The problem that is I just have one single LCD monitor, so I decide buy a data transfer switch box. However, when I connect to my KIT(DE2), it can't show on the monitor, rather remains in black and sign signal led on the monitor at that time is flashing periodically. Unfortunately, when I directly plug monitor cable to the KIT, no longer is it display DE2 default screen.  

 

Anyone can give me the reason tho my VGA port on the KIT ? 

 

Thanks a lot!
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6 Replies
Altera_Forum
Honored Contributor I
54 Views

Please rephrase in better english nad add some more sentence to explain your problem. 

What exactly is the data transfer kit that you bought?
Altera_Forum
Honored Contributor I
54 Views

Sorry for your impatient. I describable in detail as follow: 

 

I want to do some experiments to VGA port in KIT DE2, so firstly I use a demo program for VGA which is provided by Altera. More specifically, this program is belong to DE2_control_panel.  

 

Because I just have one monitor, so I need to unplug VGA cable from PC then connect it to VGA port on DE2 Kit to evaluate the result of the demo. Apparently, it is inconvenient and then I bought a switch permit to connect many PC to a monitor. At the first time, it worked but the second time test was fail. The default theme of DE2 is not displayed on the screen. I noticed that the signal led on the monitor is flash between yellow and green. (When the monitor does not get signal the led is yellow, otherwise it is in green) 

 

I guess VGA port in DE2 kit have got a trouble but I dont know how to fix it. I hope you give me some hints. 

 

Thank
Altera_Forum
Honored Contributor I
54 Views

In an afford, I try some other VGA programs and fortunely, in the stuff of them, one is work. I took it from the source below http://www.johnloomis.org/digitallab/, while demos which companion to the KIT DE2 are fail.  

 

this problem have not happened before I setup a switch for two cable to my LCD monitor. 

 

I guess that DE2 kit get some wrong to the synchronous output. But what cause to it ?
Altera_Forum
Honored Contributor I
54 Views

At the moment, to represent some simple image on LCD vga monitor, I need to use VGA_sync module. While the demos in attached CD is useless since I use a Data Transfer Switch. Sometime, It works but almost time not. I keep my ideal that my DE 2 Kit get something wrong to Hardware, but I dont know where problem is ?

Altera_Forum
Honored Contributor I
54 Views

Ok 

I will try to give you an advice
Altera_Forum
Honored Contributor I
54 Views

thanks for any your support