Demo of emulation application using a wireless gateway system. Emulated the embedded system with QEMU, SystemC and Virtual I/O. The architecture supports mixed computing architectures ARM CPU, FPGA/ASIC logic/IP cores with Verilog RTL/SystemC, Virtual I/O with wireless network concurrent with Ethernet network. Demo with data intensive Web transfers of images and videos. Applicable usages of gateways are in ground, air and space vehicles.