BlueJEP

From JopWiki

BlueJEP (BlueJ Embedded Processor) is a Bluespec System Verilog (BSV) written Java native processor, similar to JOP. Here is a brief list of features:

• six stages pipeline, micro-programmed, stack machine

1. Fetch bytecode
2. Fetch micro-instruction
3. Decode and fetch registers
4. Fetch stack
5. Execute
6. Write-back

• limited operand forwarding and stage bypass
• developed and tested for Xilinx FPGAs
• On-chip Peripheral Bus (OPB) as system bus
• memory management with garbage collection:
  • software
  • hardware (stop-the-world mark-compact for now only)
• micro-instruction folding (preliminary)

A more detailed description will come later.

Developers:

• Flavius Gruian, Lund University, Sweden
  • basic processor design
  • memory management unit design
  • executable image generator bluejim
  • micro-assembler bluejasm
• Mark Westmijze, University of Twente, The Netherlands
  • folding unit
  • debug and formatting tools