16
FIT100
ALU
The Arithmetic/Logic Unit does the actual
computation
Most computers have only about a 100-150 instructions hard
wired
Each type
of data has its own separate instructions
ADDB : add bytes ADDBU :
add bytes unsigned
ADDH : add half words ADDHU : add halves unsigned
ADD : add words ADDU : add words unsigned
ADDS : add short decimal numbers
ADDD : add long decimal numbers