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How to use EAB in Flex10K devices

Altera_Forum
Honored Contributor II
849 Views

Hi there 

 

How to use EAB blocks in Flex10K devices for multiplication to save on resources..... 

 

Thanks very much. I would appreciate a quick response. Many thanks
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5 Replies
Altera_Forum
Honored Contributor II
102 Views

Why are you working with a 20 year old part?

Altera_Forum
Honored Contributor II
102 Views

Thanks. I need to. If you could please help me with this; i would appreciate. 

 

Many thanks
Altera_Forum
Honored Contributor II
102 Views

From a quick google, I found this document "Implementing Multipliers in Flex10k Devices" 

extras.springer.com/1998/978-0-7923-8144-0/lit/an/an053_01.pdf
Altera_Forum
Honored Contributor II
102 Views

Thanks. I have turned on the USE_EAB to ON but EABs are still not being used..... Any help please. Thanks

Altera_Forum
Honored Contributor II
102 Views

I found that in the Synthesis option if I Ignore Carry Chain Buffers and select implementation to be in ROM/RAM then EAB gets used irrespective of if EAB is ON or OFF for multipliers. I want to minimise the resourse usage. Can any one explain why is this happening and I think if my some of multipliers can be implemented in EAB; it would help. Many thanks

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