For me, it made up software packages to do what I needed to do. I also tried to have it generate some 6502 assembly to multiply two numbers and generated an it

For me, it made up software packages to do what I needed to do. I also tried to have it generate some 6502 assembly to multiply two numbers and generated an iterative add approach that failed to do any adds. So I informed it that it forgot to add and it realized it's mistake and corrected the code. I tried to get it to optimize further and it generated some code using shifts that I really need to double check. It also generated a table-based method that was woefully incomplete. As I continued to get it to correct the table function, it was clear it didn't really understand 6502 assembly that well. But I've pasted large block of C# code and then gave it sample data and it understood the code well enough to generate the correct results of the code.