Rapid prototyping with programmable control paths

Raminder S. Bajwa, Chetana Nagendra, Paul Keltcher, Mary Jane Irwin

Research output: Contribution to journalConference articlepeer-review


The provision of a programmable control path allows a designer to experimentally build and evaluate many different instruction sets and data paths in a short period of time. For this approach to be practical, the designer needs a way to quickly modify the control path hardware to reflect the changes in the instruction set. To this end, we describe a flexible and efficient method for generating control logic information given an instruction set. All the information regarding the instruction set, namely, the mnemonics, the opcodes and the values of the control lines for the data path, are stored in a single file. This information is used by the assembler to assemble programs as well as generate control path programming information, which in turn is used to set up the new control path. We also show a way of searching the design space to iteratively modify an instruction set to satisfy the hardware constraints. Using this method we have successfully built a prototype of the Micro Grain Array Processor. In fact we were able to submit the board for fabrication before finalizing an instruction set.

Original languageEnglish (US)
Pages (from-to)69-74
Number of pages6
JournalProceedings of the International Conference on Application Specific Array Processors
StatePublished - 1994
EventProceedings of the 1994 International Conference on Application Specific Array Processors - San Francisco, CA, USA
Duration: Aug 22 1994Aug 24 1994

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Computer Networks and Communications


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