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Altera_Forum
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12 years ago

Flex10k - LE optimization?

Hi! Aside from cranking all the settings up, is there any tribal knowledge / best practices about LE optimization for ye olde flex10k? One odd thing I found, as mentioned earlier somewhere, was...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

Spent some time re-writing modules and managed to fit my entire design with 2% to spare :-) The VGA timing chain itself benefited greatly, saving 20 LE's just by switching over to lpm_counters up counters. The cout is great as it now serves as a load as well as an enable for the vertical timing. Note that you pay 1 LE for the additional cout and sload signal but despite that, it's all good!

Having just scored a bunch of EPM7064's on eBay, I'll probably break out the address/io decoding and some other stuff, but still... lpm functions are your friend if you're tight on space!

Thanks Dave!

-Mux