the result is right.............. you can just use the calculator that comes standard with windows to check your answer.... steve At 07:59 PM 3/22/00 , you wrote: >Ok I decided to try a new 16 bit multiply routine and I put in 255 times 255 >and here's what I got > > >Number 1: 00000000 11111111 >Number 2: 00000000 11111111 > >Result: 11111110 00000001 > >So again, I don't remember how to multiply binary so I can't tell if this >was correct off hand. What are the multiplication rules? > >1 x 1 = ? >1 x 0 = ? >0 x 0 = ? >At least when I put in 2 x 1 I did get 2 output... >