xilinx platform flash question

[Robert Sefton]

I need to configure an XC2V6000 from flash. Planning to use six XCF04S
PROMs, but I have a few questions.

1. Anyone having problems buying these PROMs? Avnet had some in stock
last week, but today they had none. What kind of lead times should I
expect?
2. Does the Xilinx Impact software fully support in-system JTAG
programming of a chain of serial PROMs? Is ISE 5.2i sp3 the required
version?
3. Does the software also support direct JTAG downloading to the FPGA if
it sits at the end of the same JTAG chain with the PROMs in it?

I'm a little wary of committing to this path and losing time due to tool
problems or inability to get parts.

Thanks,

Robert

 

[Barry Brown]

1. No problem. I'm not a buyer, so I don't know where they came from.

3. Don't know, but if you hook up the CF pin to PROG, then you can tell
Impact to make the FPGA load from the PROM after the
programming/verification is complete. You check a box in the "Program..."
dialog.

Barry

"Robert Sefton" <rsefton@abc.net> wrote in message
news:bpc3nl$1nibph$1@ID-212988.news.uni-berlin.de...

I need to configure an XC2V6000 from flash. Planning to use six XCF04S
PROMs, but I have a few questions.

1. Anyone having problems buying these PROMs? Avnet had some in stock
last week, but today they had none. What kind of lead times should I
expect?
2. Does the Xilinx Impact software fully support in-system JTAG
programming of a chain of serial PROMs? Is ISE 5.2i sp3 the required
version?
3. Does the software also support direct JTAG downloading to the FPGA if
it sits at the end of the same JTAG chain with the PROMs in it?

I'm a little wary of committing to this path and losing time due to tool
problems or inability to get parts.

Thanks,

Robert