VERILOG SDRAM controller for Papilio Pro

[Jose de Arimatea]

Hi guys, I'm studying how to make my own SDRAM controller. I would like to study a Verilog controller for Papilio Pro to learn.

Is there any Verilog SDRAM controller for Papilio Pro that I can check ?

Thanks in advance!

[Jaxartes]

Maybe.  I don't know of one exactly.  Here are some I do know of:

• Hamster (Mike Fields) wrote one that's been used on the Papilio Pro.  But it's in VHDL not Verilog.  And the links to his site aren't working tonight.  Here's a thread discussing it: http://forum.gadgetfactory.net/topic/2551-hamsters-sdram_controller/.  And here's one self contained project which used the controller: http://sowerbutts.com/socz80/.
• Here's an SDRAM controller written in Verilog, but it's for a different chip than the one used in the Papilio Pro: https://opencores.org/projects/sdram_16bit.
• I've got one, Verilog for Papilio Pro; but it didn't work.  I gave up on it in April 2016.

There are probably others, if you search.  One that's in VHDL, not Verilog, might still be understandable enough to help you.  One that's for a different SDRAM chip might still help you learn something.

[Jose de Arimatea]

I'm writing a Verilog controller for this board. 

Does anyone want to help?

I'm having some issues and it is not working yet: https://bit.ly/2GaBwRj