Hi, I did not find any good tutorial SW (not just separate pieces of code) about ia64 HW/SW- interface and had to write one. (I do not think that about 2,0000,000- lines ia64 Linux kernel is good as tutorial, not to me at least.....) The code is about 800 lines of c and about the same amount of ia64- assembly: priority based pre- emptive kernel with 19 system calls (semaphores, shared memory...) and test tasks. Tested with the free "Ski" Itanium HW simulator (HP) (,running at least on Linux platforms). More "http://www.evitech.fi/~tk/wbs/README.html". If you are still interested after reading the README, please, send me an e-mail to get the source, "tuomo.kortesmaa (AT) evitech.fi". Tuomo Kortesmaa -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/