dmercado55

Whoops, I meant GAL20V8, Use DEVICE g20v8as.

> I uploaded to a gal20v8 but it doesn't work. ​I looked at you PLD design specification and see if few things to look at. If you are using the Atmel version of Wincupl, maybe you should use an ATF16V8 part. Also add "DEVICE g16v8a;" after LOCATION in design specification otherwise you will run a 'device independent compile' and anything can happen. Lastly if it still does not work, as your equations are only combinational logic, use the "Simple GAL Model" in the specification: DEVICE g16v8as; If you want to use your National GALs you might want to use their software call Opal Jr. Scroll to bottom of this link: http://matthieu.benoit.free.fr/pld.htmto download. It may be a DOS program. Or buy a copy here: http://www.eetools.com/index.cfm?fuseaction=product.display&product_ID=323&ParentCat=22 -Dave