Ok, I've spent a number of hours(days?) to build some more SUnits and create a working Alien plugin for PowerPC that at least lets you get/put byte, short, long, and long long data (32 bit based), plus call APIs that use that type of data. At the moment Float/Double does not work because of some decisions about how to handle Float versus Long have not been made yet. Therefore you cannot work with Float or Double objects. Please find a 32bit universal plugin on the ftp site in the experimental folder. http://www.smalltalkconsulting.com/squeak.html look for the IA32ABI.1.0.1.bundle.zip It would be helpful if some folks could poke at things a bit to understand how workable things are at the moment. Tomorrow if time permits I'll look at structures, and I need some more Sunits to handle Alien objects that embed the data in the smalltalk object, versus Alien objects that use malloc and then point to the malloced storage area. Astute readers will know that Alien uses negative/positive size to mediate the type, and the Sunits don't attempt usage of both types yet to ensure there is proper coverage of the plugin support code. -- = = = ======================================================================== John M. McIntosh <johnmci@smalltalkconsulting.com> Corporate Smalltalk Consulting Ltd. http://www.smalltalkconsulting.com = = = ========================================================================