This paper mainly describes the programming of the NHGCB graphics controller system, which involves the operation mode,the communication between the Hosier and the MCS-51 microcontroller subsystem and the GDC programming.

• 本文重点介绍该系统的软件结构及绘图程序设计方法,包括NHGCB的工作方式、主机与单片机子系统的通讯与控制程序,以及GDC的编程方法等。