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Altera_Forum
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13 years ago

what is the meaning of"cant place all ram cells in design"?

hi all: i make a project with quartus 11.1,and the chip is ep3c55f780c8. when i complie the design,an error occured.the message is"error(170040):cant place all ram cells in design".but the ram...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

The other is wasted.

A M9k can't be shared between 2 devices.

Same behaviour occurs when you don't use all addresses. For example if you only need a 200 x 36bit ram, the unused 56 x 36bit are wasted.