Source code of simple microkernel based operating system. Featuring FDD, HDD, i486 processor (protected mode) and USB support.

OR1200最小系统，包括软核处理器OR1200，内存，总线，GPIO及UART的RTL实现。在SOPC2000硬件平台上实现。软件开发环境为Ubuntu，能实现SOPC2000和PC机的简单串口通信。-OR1200 minimum system, including soft-core processor OR1200, memory, bus, GPIO and UART of the RTL implementation. In SOPC2000 hardware platform. So