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Altera_Forum's avatar
Altera_Forum
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14 years ago

Design doesn't fit because of insufficient LAB

Hi all, I did a lot of redesign to reduce the register count and ALUT count. But it still doesn't fit because of lack of LAB. Could anyone tell me something about LAB? What is that used for? ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Having made some search it turns out that LUT_reg means something quite new to me. Some devices have LUT_reg mode where an LUT is converted to a register...i.e. register created from logic of LUT without using dedicated registers. This possibly indicate a famine of registers. So you may try lower the register count by redesign