I'm curious if anyone has heard when/if z/OS will support the "trap facility" via a supported API. In order to allow the various "... AND TRAP" instructions. Or is use of the TRAP facility one of those "nice ideas but not really useful" things? E.g. why would I use a "LOAD AND TRAP" to, as the book says, to load a register and trap if it is zero (to stop use of a NULL pointer) instead of a "LOAD AND TEST" followed by a BRANCH? I can see where use of the LOAD AND TRAP would be a nice way for, say, the C run-time to set itself up to trap use of NULL pointers.
But I wonder if this was where the hardware people and the software people didn't really talk. Or maybe I'm just a "neutronium head" (dense). -- There is nothing more pleasant than traveling and meeting new people! Genghis Khan Maranatha! <>< John McKown ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
