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virtex II inner organisation

Hi everyone, I'm trying to deal with readback and scrubbing into a XC2V1500 FPGA.

I've got a problem identifying the Major Adress and the Minor Adress when I'm doing a readback. I read documents (XAPP138 and XAPP151) but nothing works with virtexII. I know the frame length and the number of frame because it is in the bitstream but nothing about the number of frame in each minor adress depending on the major address and the blockk type...

Does anyone know how to determine it?

Thanks a lot.

florent

Reply to
flo
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flo schrieb:

this information is available in some files in the \xilinx\ dirs but you cant access them.

the easiest is to run bitgen with debug option and then look at the file, it will write out each frame separatly so you can gather the information you need

antti

Reply to
Antti

Hello Flo,

This information is available in the virtex-II Useg Guide (ug002.pdf) available on Xilinx's website. Page 314 and following for the current revision (configuration details). Table 4-17 coupled with FAR decoding is what you're looking for.

Based on this info I've already written working code for reading and dumping xc2v2000 *bitstreams* (crc computation, luts, brams...).

I can release it under the GPL if you can help me to get it to work with readbacks (how far is that from pure bitstreams ?) and the 1500 (small amount of work here).

JB

Reply to
jbnote

Antti a écrit :

thanks antti ! I tried your solution and I can get beginning and end of each MJA/MNA into the bitstream.

It is a very interesting option for debug.

florent

Reply to
flo

snipped-for-privacy@gmail.com a écrit :

Excellent ! brilliant! that's it, at least, the info i needed.

It would be interesting for my personnal knowledge, but the vhdl code I work on is for an electronic company. I'm not sure GPL will be much use for them. if you can help me to get it to work

Sure I can have a look. In fact readback and error detection into the read data are the only things I'm sure is working.

and the 1500

Sure I can complete your design with 1500 info

let me know.

Cheers. Florent

Reply to
flo

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