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I'm not quite sure I understand your question. If you set the QUARTUS_64BIT environment variable as shown above Quartus will start in 64-bit mode. You don't have to check it. If you don't want to run the 64-bit version of Quartus simply don't set it.
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Hi petter,
Sorry that I didn't clarify my question clearly. So as you mentioned QUARTUS_64BIT is an environment variable. But after I installed Quartus, how can I know I should set this environment variable "QUARTUS_64BIT" to configure the Quartus working in 64 bit mode? What document did you check? I think it should be some documents from Altera.
Hope I clarify my question clearly this time. Thanks.
Honored Contributor
