well if i have loaded the register mm0 with 8, 8 byte values and want to extract just the 5 th byte. how to do that next i want to shift 1 byte to left in a register how to shift 1 complete byte to left thanks ankit ________________________________________________________________________ Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now http://uk.messenger.yahoo.com/download/index.html