Quartus2 13.1 64bit launch

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You should have two shortcut options under your 'Altera' -> 'Quartus' Start menu - one for 32-bit and one for 64-bit. Given you've upgraded windows to 64-bit after you've installed Quartus, I suspect you don't.

You'll have to re-install Quartus as, I strongly suspect, the installer won't have installed the 64-bit version on your (previously) 32-bit machine.

Regards,

Alex

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Hi Alex

PC has 32bit WinXP, installed 32bit Web Edition 13.1,

and Cyclone V looks to require a 64bit compile environment.

If a project was compiled with 64bit(OS and Web Edition), How to recompile it with 32 Bit compile environment. Can it be done?

Thanks

Vraifluss