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Altera_Forum
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7 years ago

Try to reverse engineer a defective board with an EP2C8

Hello! I'm very knew to this stuff and hopefully you could explain me some things about Altera Cyclone II, because i had a defective board with such an chip and try to repair it. Therefore i ne...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
7 years ago

So, your goal is to download the contents of the S29GL064 - is that right? You refer to the FLASH - remember your EPCS4 is also a FLASH device but it sounds like that's working correctly.

Before considering reading the contents of the S29 FLASH device - what are you going to do with the binary file that you end up with? You suggest it has an error in it, which sounds like a sensible conclusion based on the description of your problem. How do you track down that problem? Decompile the binary?

As to how to read the FLASH device's contents I suggest you put together a new project, probably with a Nios, specifically aimed at reading out the contents of the FLASH. Depending on what other interfaces you have on the board you can stream it out to a file on your computer. Worst case you can put a JTAG UART in your Nios design and stream it out through that - it'll be very slow. Perhaps you have a faster I/O interface available.

Cheers,

Alex