DataPath Elements
 
 
Altera LPM library has many elements useful for building common datapath functions
- lpm_ram_dq  -  recommended for either asynchronous or synchronous RAM. Uses EAB in Flex 10K family.
 - lpm_ram_io - recommended for asynchronous RAM.  Uses EAB in Flex 10K in family.
 - lpm_compare - comparing two values. Outputs are AEQB, ALB, ALEB, AGB, AGEB
 - lpm_counter - versatile counter function 
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