With the Beidou-3 global navigation satellites system starting to operate in network, the on-board system requires faster speed of data transmission and data operation for the on-board computer systems. The core components of on-board computers for Beidou-3 satellites developed by CAS are all made or autonomously controlled by China. The on-board computers adopt the Godson 1E high-performance aerospace-class processing chip produced by Godson Corporation as the main hardware environment, and the real-time operating system VxWorks as the software environment, which constitute an on-board computer system with high performance of data computing and data transmission. In order to adapt to the new Godson 1E chips, this paper not only develop Board Support Package (BSP) and serial port drivers, but also configure the VxBus-type driver architecture on device driver management, in order to realize the porting and operation of  VxWorks on the new chips. Meanwhile, the reliability, portability, and independence of the driver are effectively improved.