looking at the Nmath caclualtions

can a math action be done directly without copy a pbp var to a Pvar first ?

A var byte

Tmp32bit_1 var byte[PRECISION]
Tmp32bit_2 var byte[PRECISION]
Result var byte[PRECISION]

eg - direct method
@ MATH_ADD A, Tmp32bit_2, Result ; A+B =Res


or do i always need to get the standard PBP var byte into a Pvar before the math calculation

eg

@ MOVE?BP A , Tmp32bit_1 ' copy byte PBP to Pvar
@ MATH_ADD Tmp32bit_1, Tmp32bit_2, Result ; A+B =Res


cheers

sheldon