👉 In the context of computer science, a preassembly is a type of assembly language instruction that performs a specific operation before the execution of an instruction. It is often used to perform calculations or operations on data that are not directly part of the machine code.
For example:
```
01h: add $a, $b
02h: sub $c, $d
```
In this example, "add" and "sub" are preassemblies that
preassembles