>>>>> On Thu, 15 Jan 2004 17:58:27 -0800, Richard Harke <rharke@earthlink.net> said: Richard> Then if the user goes off the end of the stack, there is a Richard> page fault and the system has the possiblity to extend the Richard> stack. On the ia64, this hardly seems feasible. Just initialize ar.bsp==sp. The stacks will then grow "outwards". You'll need two guard areas, but that's the extent of it. --david