Title
Fingerprint Verification on the VEX Processor: Making a VLIW Processor and its Toolchain useful for reallife applications,Used
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The speed gap between a processor realized in Semicustom ASIC technology and a processor realized in FPGA technology is narrowing. Common pracatise is to define and design the microarchitecture of the processor for executing an application domain. We investigate the reverse approach to design a customized and parameterized VLIW processor for a fingerprint application. We analyze the applications requirements before porting it to run on the VEX simulator. This required design and integration of an arithmetic module for emulating 64bit arithmetic. From the ported application on the VEX simulator we derive the architectural parameters for the VEX processor. Based on these, we designed a pipelined and parametrized VLIW processor according to the VEX ISA. Moreover, this design was implemented and realized in a Virtex6 FPGA. Furthermore, creating the instruction memory of the VEX processor required the development of a toolchain that was inherited from the ?VEX project. For this purpose, we extended the backend of the VEX compiler, redesigned the assembler and developed a linker with a loader. The toolchain allowed us to process the fingerprint applications kernel on the VEX CPU.
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