Architecture of the simplified Chinese embedded system STARTH

There is a trend for the information products that are integrated by computer, communication, and consumer electronics. The OS is required more compact and practical. An embedded system STARTH is developed based on the core of the Motorola PPSM that is a real time 32-bit kernel with prioritized interrupt scheduling. All tasks are interrupt-driven. The PPSM kernel does not access hardware device directly. The kernel controls all peripherals indirectly, through software device drivers. The PPSM tools consist of pen input, graphics, database, text, character input, system and communication. The PPSM toolsets, together with its device drivers, provides the basic contro of the LCD, the drawing functions, the real time clock and the UART. The architecture of the embedded system STARTH on the Dragon Ball EZ platform is discussed in parts in details. The development environments of both software and hardware are described. The system is analyzed from its initialization, registration to system management, even the applications programming. The STARTH is tested and run on the hardware system of Dragon Ball platform. It is found that STARTH is practical and reliable for personal information devices.