[stella] Fastest(?) paddle reading

[bob.montgomery at thomson.com]

Hi Thomas,

>New code:
>   bit INPT0    ; 3
>   bmi .save+1  ; 2/3
>.save:
>   sty paddle   ; 3/2    paddle has to be at the address of an 1 byte,
2  
>cycles opcode, e.g. $ea (NOP)
>Total: 8 cycles, 1 cycle saved :)

Very cool - thanks for sharing!

-Bob