Elizabeth developed a standalone watchdog timer feature for the chipsalliance/caliptra-mcu-sw repository, focusing on the emulator’s MCI peripheral. She implemented support for two independent watchdog timers, enabling precise control and timeout behavior through new fields and methods. Her work included scheduling WDT expirations and updating status registers to accurately reflect timer states, all written in Rust and leveraging her expertise in embedded systems and hardware emulation. To ensure reliability and prevent regressions, Elizabeth created a dedicated test case that thoroughly verified watchdog timer behavior. The feature enhanced the emulator’s robustness and testability, addressing future maintenance and system reliability concerns.