Status of the MDT Trigger Processor for the ATLAS Level-0 Muon Trigger at the HL-LHC

The MDT Trigger Processor (MDTTP) is a key ATLAS Level-0 Muon trigger upgrade component designed to meet High-Luminosity LHC requirements. The MDTTP will use MDT hits in the trigger for the first in ATLAS to improve the momentum resolution of muon candidates provided by RPC and TGC detectors and reduce fake muon trigger rate. The MDTTP hardware is based on the Apollo ATCA platform. The pre-production prototype includes a VU13P-FPGA, high-speed FireFly optical transceivers, peripherals, and other improvements learned from using the previous hardware demonstrator. We present the prototype status, firmware implementation, core algorithm, slow-control software, and first integration tests.