Hi Frank.
In fact after your comments, I leave the try with the Terasic code, at least talking about SDRAM.
Looking for some threads (questions and answers, of anothers beginners in the forum), I found a thread, where you upload a code in VHDL, with a .pdf for use as explanation refence. And that pdf, results be the same, as I have in the code that I downloaded before and I commented about. Although the code I've is in verilog, and say it was made by "Northwest Logic" in the 2000 year.
The thread I named above is:
http://www.alteraforum.com/forum/showthread.php?t=2054&page=2&highlight=sdram So now I'll be going for this new try... the pdf is very well explained.
I hope to get write and read some bytes in the SDRAM at a relative fast data rate, and learn more and more.
Thx && Regards.
Alberto.