| 6502/ - Architectural files for the 6502 CPU. | |
| rtxc/ - Architectural files for the RTXC operating system. | |
| unix/ - Architectural files for testing on unix-like systems | |
| (assuming gcc and pthreads). | |
| Each subdirectory (may) also include: | |
| perf.c - Optional file that should be implemented when running | |
| performance tests of lwIP. | |
| sys.c - Implementation of the operating system emulation layer. | |
| netif/ - Architectural specific network interfaces. |