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Altera_Forum
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17 years ago

RPA FLEX 10K problem with data bus

Hi All This may well be the wrong place to ask this question. If so, I apologize in advance... just ignore my ignorance. On the off chance I am in the right place... The project I am cur...
Altera_Forum's avatar
Altera_Forum
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17 years ago

Hi FvM

The entity was simulated using Quartus and then I loaded onto the Altera device which is on an RPA board (http://www.rpaelectronics.com/pdf/pci_fio.pdf). I have seen chip select used in other implementations, but did no understand its role, so I will look into that again. The address port is pinned directly to the 8-bit address bus on the RPA card. I'm wondering if it might be a simple case of not running the clock fast enough. I think the RPA data/address bus runs at 33Mhz, whereas I have the RAM block running at 20MHz... I don't quite see how this leads to the strange results, but worth a try I suppose.

Many thanks for your suggestions... I'm hoping that I've just overlooked some small requirement related to the RPA board... fingers crossed!

Kurt