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Altera_Forum's avatar
Altera_Forum
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14 years ago

VGA problem

Hi, Anyone here can help me with VGA problem, the program code just simply output one colour to monitor. However, my monitor display nothing. I have no idea what happen. :( The attachment is my...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Hello,

If the monitor turns off when you load your design to the FPGA the problem could be the HS & VS signals supplied to the monitor and not the data R, G & B.

I would connect the signal TAP to these two lines that go out of the FPGA to the monitor. The signal TAP sampling clock should be the 25MHz clock.

In the signal Tap you can check these signals and for how many clocks they are in high and low state?

It will be helpful if you can post here a picture of the signal TAP result.

Good Luck!