How to use EAB in Flex10K devices

[Altera_Forum]

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

[Altera_Forum]

Why are you working with a 20 year old part?

[Altera_Forum]

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

 Many thanks

[Altera_Forum]

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]

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

[Altera_Forum]

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