Hi Myster G! Welcome! > Update Haiku support in SDL 1.3 > > i know very well to program in C but i dont know what is userland > development, > Usually operating systems, separate the system memory in kernel space and user space, in simple words, kernel space access directly the hardware and user space access the hardware via some syscalls provided by the system. So your apps (firefox ..) runs in user space instead your drivers runs in kernel space. http://en.wikipedia.org/wiki/User_space Userland development, is referred to the development of applications like the haiku's MediaPlayer (or application components like libraries for example : SDL) that run in userspace, presumably via the userland API provided by the system (HaikuAPI, c library..) : http://haiku-os.org/legacy-docs/bebook/ http://api.haiku-os.org/ and one more thing:: > for the ideia:::Update Haiku support in SDL 1.3 > SDL is the :::http://en.wikipedia.org/wiki/Simple_Declarative_Language > SDL (Simple Directmedia Layer) is a c library used to develop 3D and 2D games : http://www.libsdl.org/ There was a small mistake in understanding the acronym : ) Regards --Dario