-- VHDL code position: p241_ex8_19_operator_get_sum1
-- Note : This is code for explaining the use of geting sum operator of VHDL ,
-- The get sum opeator includes add(+),sub(-), and unite(&)
-- Debug : no debug
---------------------------------------------------------------------------------
VARIABLE a, b, c, d, e, f: INTEGER RANGE 0 TO 255;
......
a := b + c;
d := e - f;
......