In a message dated 2/9/98 6:02:58 PM Pacific Standard Time, dpineo@student.umass.edu writes: << Does anybody know where I can find the number of clock cycles needed for each instruction? I'm pretty broke and would rather not spend money on a book. >> you can order literature on the MC68000 processor, including instruction times from motorola at http://www.mot-sps.com/home/lit_ord.html -James