AMULET Microprocessor
AMULET is a series of microprocessors that implement the ARM processor architecture. Developed by the Advanced Processor Technologies group under the University of Manchester's computer science school (formerly the AMULET and PAL groups based at the same institution), AMULET is unique amongst ARM implementations in being an asynchronous microprocessor, not making use of a square wave clock signal for data synchronization and movement.
Read more about AMULET Microprocessor: List of AMULET Microprocessors