Thanks for the correction, you're right A9 is load immediate I was mixing it up with AD xx xx which follows as 8D is the equivalent store. I wasn't saying that

Thanks for the correction, you're right A9 is load immediate I was mixing it up with AD xx xx which follows as 8D is the equivalent store. I wasn't saying that the accumulator was 16 bit though, rather that the load is from an absolute 16 bit address.