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List of AMULET microprocessors
- AMULET1 — Designed in 1990 and first fabricated in 1993. Its estimated performance is approximately 70% of that of a comparably-sized synchronous ARM6 running at 20 MHz.[1][2][3][4]
- AMULET2 — A re-implementation of AMULET1 first fabricated in 1996. Features on-chip memory that can be used either as processor cache or mapped RAM. The APT group estimates AMULET2 to have a similar power dissipation/performance ratio as ARM8. One very notable feature due to the asynchronous design is the drop of power dissipation to 3 μW when not in use (assuming the on-board timer, which handles DRAM refresh, is also inactive).[5]
- AMULET3 — This was a redesigned architecture aiming at higher performance than the previous AMULET processors whilst retaining low power dissipation. Fabricated in 2000, it supported the ARM level 4 instruction set compatibility, alongside support for Thumb mode (i.e. ARM9TM). Performance and power dissipation were approximately the same as an ARM9 fabricated on the same technology. AMULET3 was employed in a commercial prototype DECT device because of its inherent low electromagnetic interference characteristics. This did not go into manufacture for non-technical reasons.[6]
References
- ↑ The Advanced Processor Technologies Group Archived 2013-11-12 at the Wayback Machine. Intranet.cs.man.ac.uk. Retrieved on 2013-06-14.
- ↑ Furber, S.B.; Day, P.; Garside, J.D.; Paver, N.C.; Woods, J.V. (1994). "AMULET1: A micropipelined ARM". Proceedings of COMPCON '94. IEEE. pp. 476–485. doi:10.1109/cmpcon.1994.282880. ISBN 978-0818653803. S2CID 14245464.
- ↑ Woods, J.V.; Day, P.; Furber, S.B.; Garside, J.D.; Paver, N.C.; Temple, S. (April 1997). "AMULET1: an asynchronous ARM microprocessor". IEEE Transactions on Computers. 46 (4): 385–398. doi:10.1109/12.588033. ISSN 0018-9340.
- ↑ Furber, S.B.; Day, P.; Garside, J.D.; Paver, N.C.; Temple, S.; Woods, J.V. (1994). "The design and evaluation of an asynchronous microprocessor". Proceedings 1994 IEEE International Conference on Computer Design: VLSI in Computers and Processors. IEEE Comput. Soc. Press. pp. 217–220. doi:10.1109/iccd.1994.331891. ISBN 978-0818665653. S2CID 14055669.
- ↑ The Advanced Processor Technologies Group Archived 2013-11-12 at the Wayback Machine. Intranet.cs.man.ac.uk (2 October 1996). Retrieved on 2013-06-14.
- ↑ The Advanced Processor Technologies Group Archived 2013-11-12 at the Wayback Machine. Intranet.cs.man.ac.uk. Retrieved on 2013-06-14.
