Designing with Low-Level Primitives User Guide: Known Issues - Designing with Low-Level Primitives User Guide: Known Issues Description Designing with Low-Level Primitives User Guide, Version 3.0 Section 2, Primitive Reference, shows a list of primitives with note 1 stating these are only supported in Stratix® III and Cyclone® III devices. This is not accurate; the following primitives are only supported in Cyclone III devices: ALT_OUTBUF_TRI_DIFF ALT_IOBUF_DIFF ALT_BIDIR_DIFF Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Cyclone® III FPGAs', 'Stratix® III FPGAs'] ['novalue'] ['novalue'] ['novalue']