ZiLOG’s real-time preemptive multitasking kernel, RZK, is designed for time-critical embedded applications. It is currently available for ZiLO’s eZ80Acclaim!(TM) family of devices that includes the eZ80F91, eZ80F92, and eZ80F93 microcontrollers and the eZ80190 and eZ80L92 microprocessors. RZK is royalty-free, configurable, scalable, and modular in design. The kernel provides a rich set of features via easy-to-use and well-documented APIs. In additional, RZK features are highly optimized to the stringent memory and performance requirements of typical 8-bit embedded applications.