ID:20336 This Error has been downgraded to Warning: Block "<atom name>" is configured to use registered <port name> which does not support Readback/Writeback for ASIC Emulation flow.

CAUSE: M20K/LUTRAM data out port must be set to none in ASIC_PROTOTYPING emulation mode.

ACTION: Set data out port to none when ASIC_PROTOTYPING is ON.