CACHECHK will do memory accesses to check out 
the L1 and L2 cache, tell you the speeds and 
sizes of each, and check to see if all of 
your memory is cached, or if some is 
non-cached. POSTCARD-WARE, not shareware or 
freeware CACHECTL allows you to turn the L1 
cache on or off, and tell you if it's enabled 
or disabled.