How can you enter equ?

Question

assembler

Hello!
Can I somehow
override the constant in the data segment in .code?
Or is a constant a constant?

Answer 1

Depends on the type of the actual constant. If this is a number, then it will fall into the registers and opcode would have to be changed. If it is data, then it depends on the compiler. Some can pack constants into the data section and they can be changed. But there are those who create a section with read-only access.

Answer 2

Constants defined through equ are symbolic constants, their values ​​are substituted at the preprocessing stage, they can be defined and redefined anywhere, their place of action is from the point of definition to the end of the program.