In 51 MCU assembly language programming, initial assignment can be achieved by using instruction MOV.
The steps are as follows: 1. First, determine the address of the variable or register that needs to be assigned an initial value.
2. Load the required initial value into a register or memory address using the MOV instruction.
3. If the initial value needs to be assigned to a register, you can directly use the MOV instruction to load the initial value into the register.
4. If the initial value needs to be assigned to a memory address, you can use the MOV instruction to load the initial value into a register, and then use the MOV instruction to store the value in the register into the memory address.
In 51 MCU assembly language programming, initial value is a very important step, it can provide initial values for variables or registers, so that the program can calculate and judge correctly when running. The method of
initial assignment is not limited to the MOV instruction, but can also be implemented using other instructions or tricks.
In practical programming, according to the specific needs and situations, it is very important to choose the appropriate initial valuation method.
At the same time, the process of assigning initial values also needs to pay attention to the matching of data types and the rationality of the range to avoid errors or overflows.
Use mov command to operate directly. For example, to write the binary value 10101010 in register R0. Use the following statement. MOV R0, #10101010B