[Someone]

A9 xx xx is load accumulator absolute

Make that A9 xx; The 6502 accumulator is 8 bits.

[exception]

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.