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A Library and Platform for FPGA Bitstream Manipulation

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1 Author(s)
Adam Megacz ; UC Berkeley, USA

Since 1998, no commercially available FPGA has been accompanied by public documentation of its native machine code (or bitstream) format. Consequently, research in reconfigurable hardware has been confined to areas which are specifically supported by manufacturer-supplied tools. Recently, detailed documentation of the bitstream format for the Atmel FPSLIC series of FPGAs appeared on the usenet group comp.arch.fpga. This information has been used to create abits, a Java library for direct manipulation of FPSLIC bitstreams and partial reconfiguration. The abits library is accompanied by the slipway reference design, a low-cost USB bus-powered board carrying an FPSLIC. This paper describes the abits library and slipway platform, as well as a few applications which they make possible. Both the abits source code and slipway board layout are publicly available under the terms of the BSD license. It is our hope that these tools will enable further research in reconfigurable hardware which would not otherwise be possible.

Published in:

15th Annual IEEE Symposium on Field-Programmable Custom Computing Machines (FCCM 2007)

Date of Conference:

23-25 April 2007