Hi All, Seems that LL & SC instrutions operate on a 'word' data. Can we use the same instructions to do a atomic increment on a 'byte' data. If not, are there any specific instructions to operate on a byte data? (Like, LLD & SCD for doubleword data) or else, any method to achieve this using the LL & SC instr? Thanks much, -karthi ===== The expert at anything was once a beginner ________________________________________________________________________ Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now http://uk.messenger.yahoo.com/download/index.html