clk_a clk_a reset_n reset_n zpu_fetch zpu_fetch zpu_32bit_write_enable zpu_32bit_write_enable zpu_16bit_write_enable zpu_16bit_write_enable zpu_8bit_write_enable zpu_8bit_write_enable zpu_read_enable zpu_read_enable zpu_memory_data[31:0] zpu_memory_data[31:0] HEXRADIX zpu_memory_ready zpu_memory_ready zpu_addr_rom[15:0] zpu_addr_rom[15:0] HEXRADIX zpu_rom_data[31:0] zpu_rom_data[31:0] HEXRADIX clk_a_period clk_a_period