Use disassembly---look at it roughly and you may not understand a lot
The structure of the CUP includes the operator register and the controller [before I learned it, I always thought that the register was in the memory stick, but it turned out to be in the cpu...]
The data in the memory can be placed in the operator or in the register, but the register is faster than the operator, but the storage is small (as for what data is placed, I don't know) general-purpose registers (binary 16-bit) ): AX BX CX DX
AX is divided into AH and BL
BX is divided into BH and BL
CX is divided into CH and CL
DX is divided into DH and DL
is divided into the first eight bits and the last eight bits For example, AH is the high eight-bit small register AL is low eight-bit register