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Paper Details

@InProceedings{Jakson05,
  title = "{R}16: a {N}ew {T}ransputer {D}esign for {FPGA}s",
  author= "Jakson, John",
  editor= "Broenink, Jan F. and Roebbers, Herman and Sunter, Johan P. E. and Welch, Peter H. and Wood, David C.",
  pages = "335--362",
  booktitle= "{C}ommunicating {P}rocess {A}rchitectures 2005",
  isbn= "978-1-58603-561-7",
  year= "2005",
  month= "sep",
  abstract= "This paper describes the ongoing development of a new FPGA
     hosted Transputer using a Load Store RISC style Multi
     Threaded Architecture (MTA). The memory system throughput is
     emphasized as much as the processor throughput and uses the
     recently developed Micron 32MByte RLDRAM which can start
     fully random memory cycles every 3.3ns with 20ns latency
     when driven by an FPGA controller. The R16 shares an object
     oriented Memory Manager Unit (MMU) amongst multiple low cost
     Processor Elements (PEs) until the MMU throughput limit is
     reached. The PE has been placed and routed at over 300MHz in
     a Xilinx Virtex-II Pro device and uses around 500 FPGA basic
     cells and 1 Block RAM. The 15 stage pipeline uses 2 clocks
     per instruction to greatly simplify the hardware design
     which allows for twice the clock frequency of other FPGA
     processors. There are instruction and cycle accurate
     simulators as well as a C compiler in development. The
     compiler can now emit optimized small functions needed for
     further hardware development although compiling itself
     requires much work. Some occam and Verilog language
     components will be added to the C base to allow a mixed
     occam and event driven processing model. Eventually it is
     planned to allow occam or Verilog source to run as software
     code or be placed as synthesized co processor hardware
     attached to the MMU."
}

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