Abstract: An integrated circuit may be provided with system-on-chip circuitry including system-on-chip interconnects and a microprocessor unit subsystem. The subsystem may include microprocessor cores that execute instructions stored in memory. Cache may be used to cache data for the microprocessor cores. A memory coherency control unit may be used to maintain memory coherency during operation of the microprocessor unit subsystem. The memory coherency control unit may be coupled to the system-on-chip interconnects by a bus. A command translator may be interposed in the bus. The command translator may have a slave interface that communicates with the interconnects and a master interface that communicates with the memory coherency control unit. The integrated circuit may have programmable circuitry that is programmed to implement a debug master coupled to the interconnects. During debug operations, the command translator may translate commands from the debug master.

Abstract: A field programmable gate array (FPGA) includes a soft processor and a soft processor debug unit implemented by programmable logic on the FPGA. The FPGA includes a system on a chip (SOC) that includes a hard processor and a hard processor debug unit. The FPGA includes a bus bridge, coupled to an input output (IO) of the FPGA, operable to transmit data between the IO and the soft processor debug unit and the hard processor debug unit.

Abstract: An integrated circuit may be provided with system-on-chip circuitry including system-on-chip interconnects and a microprocessor unit subsystem. The subsystem may include microprocessor cores that execute instructions stored in memory. Cache may be used to cache data for the microprocessor cores. A memory coherency control unit may be used to maintain memory coherency during operation of the microprocessor unit subsystem. The memory coherency control unit may be coupled to the system-on-chip interconnects by a bus. A command translator may be interposed in the bus. The command translator may have a slave interface that communicates with the interconnects and a master interface that communicates with the memory coherency control unit. The integrated circuit may have programmable circuitry that is programmed to implement a debug master coupled to the interconnects. During debug operations, the command translator may translate commands from the debug master.

Abstract: A field programmable gate array (FPGA) includes a soft processor and a soft processor debug unit implemented by programmable logic on the FPGA. The FPGA includes a system on a chip (SOC) that includes a hard processor and a hard processor debug unit. The FPGA includes a bus bridge, coupled to an input output (IO) of the FPGA, operable to transmit data between the IO and the soft processor debug unit and the hard processor debug unit.