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Honored Contributor

15 years ago

Source of errors in data from SGDMA

Hello, Sorry to be back so quick but I have spent the last two days on this and am at a loss. I have an SGDMA which is reading 16 bit data from an 8bit SDRAM and streaming this to a vide...

Altera_Forum

Honored Contributor

15 years ago

Here is a capture for a typical line with the frame buffer written to 0xFFF0:

http://rapidshare.com/files/417808007/stcap-blueframebuffer.jpg

And here is one with an empty frame buffer (0x0):

http://rapidshare.com/files/417808438/stcap-blackframebuffer.jpg

Can you make any sense of them? To me the first one looks as if the data output by the SGDMA bears little relation to that on m_read.

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Source of errors in data from SGDMA

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