Stan Sieler ([log in to unmask]) wrote: : > Does the following mean anything to anyone on this list: : > NM SYS a.00168b1c aligned_page_not_present+$14 [snip] : It's part of the assembly language code used by some of the very low-level : MPE/iX semaphore procedures. On 5.0, cb_lock can go to int_sem_lock, : which in turn goes to aligned_int_lock, which in turn goes to : your aligned_page_not_present. : Why? page not in memory, aligned_page_not_present goes to touch the page (tries loading to bit bucket, i.e. gr0) to force memory mgmt to fetch that page from virtual memory. :-) Eero - HP CSY networking lab.