Operating system project from scratch to design and implement all components from boot strapping,hardware interrupts , memory manger ,file system , etc .
Help port the tulip driver from free/net/openbsd to Darwin OS. So far the driver is written to the ADMtek 985 clone chipset and the PNIC 82c169 chipset. Due to IOKit's object-oriented design, the code can be easily subclassed to support new chipsets.