| .. _Xtensa-System-emulator: | 
 |  | 
 | Xtensa System emulator | 
 | ---------------------- | 
 |  | 
 | Two executables cover simulation of both Xtensa endian options, | 
 | ``qemu-system-xtensa`` and ``qemu-system-xtensaeb``. Two different | 
 | machine types are emulated: | 
 |  | 
 | -  Xtensa emulator pseudo board \"sim\" | 
 |  | 
 | -  Avnet LX60/LX110/LX200 board | 
 |  | 
 | The sim pseudo board emulation provides an environment similar to one | 
 | provided by the proprietary Tensilica ISS. It supports: | 
 |  | 
 | -  A range of Xtensa CPUs, default is the DC232B | 
 |  | 
 | -  Console and filesystem access via semihosting calls | 
 |  | 
 | The Avnet LX60/LX110/LX200 emulation supports: | 
 |  | 
 | -  A range of Xtensa CPUs, default is the DC232B | 
 |  | 
 | -  16550 UART | 
 |  | 
 | -  OpenCores 10/100 Mbps Ethernet MAC |