site_archiver@lists.apple.com Delivered-To: darwin-kernel@lists.apple.com Importance: Normal Hi, PowerPC architecture generally defines 3 types of modes or programming environment. 1. UIA (User instruction Architecture) corresponds to user application programming instruction definitions. 2. VEA (Virtual Environment Arch.) mid way to user space and OEA, has support for cache modeling instructions, timing read instructions support. 3. OEA (Operating Env. Arch.) Memory management support. timing write, cache modeling instructions etc. This can use all the instructions of above two modes. 1. I think IOKit driver and the xnu kernel work in the OEA environment mode, Am I correct? or I have misunderstood something? 2. Can somebody give more idea/ links on how to bind this concept of various PPC programming mode to the xnu and IOKit driver? Regards, Parav Pandit _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.a... This email sent to site_archiver@lists.apple.com