Which instruction would NOT be appropriate for copying a set of machine presets?

The BCR (Block Copy Register) instruction is typically used for operations that involve manipulating data in software-defined structures or handling data that has been organized based on specific block formats. This instruction is usually suited for copying a defined portion of data from one location to another in a specific block format, often involving bit patterns or control data. Since machine presets typically involve direct data values rather than the block manipulation or specific format considerations that BCR is designed for, utilizing the BCR instruction would not be appropriate for simply copying machine presets.

In contrast, the COP (Copy) instruction is specifically designed to copy data from one location to another, making it ideal for transferring machine preset configurations. The FLL (Fill) instruction is used to fill a specified range of memory locations with a constant value, which could also be relevant for initializing preset values. The MOV (Move) instruction is another basic data manipulation instruction that allows for straightforward copying of data, making it suitable for transferring machine preset values. Thus, the other instructions—COP, FLL, and MOV—are more appropriate for handling tasks related to copying or transferring sets of data such as machine presets.