Which instruction would you use to preset an array with a single value?

The FLL instruction is specifically designed for filling an entire array with a single value effectively. When you need to preset or initialize an array with the same value across all its elements, the FLL instruction streamlines this task with a straightforward operation.

Using the FLL instruction involves designating the target array and the value you want to fill it with, and it will replicate that value for each element in the array. This makes it particularly efficient for initializing large arrays compared to other instructions that may not offer the same level of convenience or direct functionality.

In contrast, the COP instruction is typically used for copying data from one location to another, which is not suitable for filling an array with a repeated value. The MOV instruction serves the purpose of moving data but isn't designed expressly for initializing or presetting arrays. The SET instruction, while useful for setting specific bits or states, does not apply to filling entire arrays with a value. Thus, the FLL instruction is the most appropriate choice for this specific use case.