Emu8086-A good helper for learning assembly language

Recently, I was debugging an assembly program and looking for debugging software on the Internet. I found a tool called Emu8086 that is particularly useful. It is an 8086 virtual machine that can simulate and run some 8086 assembly programs. It is a 2M program that can simulate a CPU with a debugger, a screen, and many I/O devices, plus a useful program editor and a large amount of classic source code. Of course, this is all done under Windows. So, what are the benefits of learning assembly under emu8086? First of all, it saves the trouble of configuring the development environment. If you learn DOS assembly, you need to find an assembler such as masm link, and you need to remember the troublesome command line. The most annoying thing is to use debug to debug. That trouble... Under Emu8086, there is no such trouble. The debugging program is as simple and intuitive as VC, Ollydbg, etc. You can check the intermediate running results and register values ​​at any time. Another very prominent advantage is that this is a simulation of a real CPU, which is the so-called "bare metal"! You are no longer dealing with an operating system, but a real CPU, memory, screen, IO interface, etc. More "advanced" things like how to control screen output under the operating system can be easily experienced under Emu8086. If you have the ability, you can even implement a simple operating system on it.