# Applied Engineering DClock — ProDOS Clock Driver This is based on a disassembly of the Applied Engineering driver for the DClock real time clock add on for the Apple IIc. > NOTE: Currently untested! Like other drivers here, this one will: * Conditionally install, only if a DClock is detected. * Only attempts detection if there is not already a clock driver. * Only attempts detection if the system is a an Apple IIc * If detected, installs into ProDOS directly, following Technical Reference Manual requirements. * Chains to the next `.SYSTEM` file in the directory.