A logic option that allows the Compiler to automatically implement combinatorial logic in ROM (that is, in an embedded cell within an Embedded System Block (ESB) or Embedded Array Block (EAB) that is set to use ROM mode), to improve speed or area usage. Using ROM in this way can free up logic cells that would otherwise be needed to implement the combinatorial logic.

This option is ignored if it is assigned to anything other than a design entity. The Auto Implement in ROM option is also ignored if you select Product Term as the setting for the Technology Mapper option. This option is available for ACEX^® 1K, APEX^™ 20K, APEX 20KC, APEX 20KE, APEX^™ II, ARM^®-based Excalibur^™, FLEX 10KE, and Mercury^™ devices.

Back to Top