Richard E. Calcagni

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A VLSI VAX microcomputer, which implements the native VAX computer architecture and instruction set, uses 16K by 40 bits of ROM control store. To decrease the cost of making changes to released microcode, the hardware supports a patching mechanism whereby control flow can be switched between the read-only control memory and a smaller writable control(More)
Design verification as part of development provides an opportunity to correct design errors, improve performance characteristics, and optimize hardware. This paper presents the strategy and an overview of the verification performed in the development of a VLSI VAX microcomputer. Using a hierarchical methodology for simulation and verification, the logic(More)
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