addressing on-chip memory(cyclone IV) from PC via PCIe

Hi Matthias,

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I’m sorry I cannot share my core with you, I have done it as part of my business work.

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No problem, that is completely understandable.

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And, BTW, you might not like our coding style which is based on Jiri Gaisler’s structured design method (http://www.gaisler.com/doc/structdes.pdf), and goes even further (we use bit, boolean and (ranged) integers instead of std_logic/std_logic_vector).

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I take a fairly neutral approach to coding style. I call it the "when in Rome" style, i.e., I code in the style of the rest of the design, eg., for Linux drivers I use Linux style, for uC/OS-II I use Labrosse's style, and if I was working with you, I'd use the Leon/Gaisler style. Its much easier to review code written using a uniform coding style.

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And I have to admit that I don’t have any experience with BFMs. I relied on my experience in reviewing VHDL code and keeping the code at least without a chance to hangup the system. Debugging was either a collection of a lot of printk()’s in the Linux driver, together with a couple of debug registers readably by MMIO accesses, or to output some simple internal signals to a couple of LEDs. And, yes, the coding style helped a lot.

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Ok, when I get something working, I'll post it. You might decide you like BFMs. Once I have a working design, I'll code a Gaisler style version and see if I like it too :)

Cheers,

Dave