Peking University Computer composition principle note 2.2x86 Architecture

The x86 architecture first understands that the various x86 chip models are followed by the well-known 8086, it is better to set up "Computer composition principles" than to set up "Computer principles "!! Next, intel introduced the improved product-80286. Either mode, you only need to reset it and switch to the realmodel Register model.

The x86 architecture first understands that the various x86 chip models are followed by the well-known 8086, it is better to set up "Computer composition principles" than to set up "Computer principles "!! Next, intel introduced the improved product-80286. Either mode, you only need to reset it, and you will switch to the real model register model.

X86 architecture

First, we can understand the various x86 chip models.

Next is the well-known 8086. It is better to set up the "Computer composition principle" than to set up the "Computer principles "!!

Then intel launched the improved product-80286

In either mode, the system switches to the real model after a reset.

Register Model

It is worth noting that the CPU of 32bits extends General registers, command registers and sign registers, but the stack registers remain unchanged! Or the original 16 bits

Now we have used the 64 bits Register model. We haven't changed the segment register here, or we have modified the General Register and Mark register as well as the instruction register.

Now, update later.