o RV$1.4:外设（显示器， 触摸屏，网络) 0 RV$6.9:总线，IO系统 -示例：NetFPGA1 0G Ethernet NIC an FPGA-based open platform for network research and classroom experimentation -总线 -Control -Data ·PCl:并行总线 PCle ·PCle总线：串行总线 MAC PHY +Port 0 MAC PHY ++Port 1 -V0系统 DMA MAC PHY +Port 2 ·MMIO MAC PHY+Port 3 Polling,Interrupt-driven I/O,DMA ·设备驱动程序• RV $1.4：外设（显示器，触摸屏，网络） • RV $6.9：总线，I/O系统 – 示例：NetFPGA 10G Ethernet NIC • an FPGA-based open platform for network research and classroom experimentation – 总线 • PCI：并行总线 • PCIe总线：串行总线 – I/O系统 • MMIO • Polling，Interrupt-driven I/O，DMA • 设备驱动程序