The VAX 6000 Model 600 Processor

The Model 600 is the newest member of the VAX 6000 series of XMI2-based, multiprocessing computers. The Model 600 processor integrates easily into existing platforms. Each processor module provides 40.5 SPECmarks of performance made possible by the NVAX CPU chip. The major VLSI interface chip, called NEXMI, was created using Digital's internal CMOS-3 design and layout process. The ability to design and fabricate the interface chip internally was critical to delivering a working CPU prototype module on schedule. The aggressive module timing goals were met by employing previous module experience in combination with extensive SPICE simulation.