近午来,随着单片机在我国的广泛应用,要求有更多更好的开发工具。我们利用 CROMEMCO Z-80微型机组成了 MCS-48系列单片机的开发系统。本文所介绍的仿真器是其中一部分。本文重点论述了该仿真器的设计思想,描述了它的软、硬件结构及工作原理。该仿真器能够以单步、断点、连续三种方式仿真单片机运行,并具有实时跟踪、逻辑分析、存贮器检查与修改等功能。 In the afternoon, with the widespread use of single chip microcomputer in our country, more and better development tools are required. We use the CROMEMCO Z-80 microcomputer MCS-48 series MCU development system. The emulator introduced in this article is a part of it. This article focuses on the design of the simulator, describes its software and hardware structure and working principle. The simulator can single-step, breakpoint, continuous three ways to simulate the operation of the microcontroller, and with real-time tracking, logic analysis, memory check and modify functions.