Hi, I wanted to prepare QEMU models of new hardware for my students, to let them to write and debug device drivers before the real hardware is available (or even to optimize the design of this hardware before it is really made). I was able to establish the basic communication with memory mapped registers of my device, but when it comes to more advanced topics like DMA and interrupts, things start to be difficult. Is there any reference or manual for people trying to write device models for QEMU? I know that the "hw" subdirectory is full of examples, but I'd prefere something more "formal", with info which solutions are optimal, which are deprecated... Thank you very much in advance, Wojciech Zabolotny
