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Electronic Engineering, Nov. 1989

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TECHNOLOGY for the chip, that same day we will ship to our customers, fre of charge, the software to download their existing networks directly to the chip," Lawrence stated. California Scientific Software's BrainMaker Professional aI 0 ha a built-in proprietary semilinear algebra algorithm. called the HyperSonic Trainer, as well as the standard back-propagation-of-errors learning method. BrainMaker Professional comes with NetMaker Professional, which can directly read other data in preadsheet fonnats. BrainMaker Professional will have data manipulation features, such as time-shifting operators, as well as data-smoothing operators for digital filters, Fourier transforms and other standard operations. When it is not emulating the Intel chip, BrainMaker Professional can handle extremely large networks. "The professional version can handle networks as large as 32,000 neurons per layer but will still run at 95 percent of the speed of regular BrainMaker networks," Lawrence said. NetMaker, a front-end program for rapidly prototyping networks, is included free of charge with shipments of the BrainMaker 2.0. "You can build your very first network in less than five minutes with NetMaker," Lawrence said. BrainMaker 2.0 also gives direct access to the weight matrix, unlike BrainMaker 1.0. Existing users of BrainMaker 1.0 can upgrade to 2.0 for 95. Lawrence claims that BrainMaker is now the most popular neuralnetwork simulator, clocking in at 7,000 copies. "We have sold more copies of BrainMaker than everything else put together; NeuralWare has sold 2,500, NeuralShell from Ward Systems Group is at about 1,200 and Hecht-Nielsen has sold just over 200," claimed Lawrence. "That gives us over 50 percent market share." its IBM plans X-ray litho ring by '91 East Fishkill, N. Y. - mM's 10year effort in X-ray lithography research will culminate in 1991, when the company will use the nation's only privately owned synchrotron storage ring for X-ray lithography. In synchrotron technology, Xrays are generated by using a storage ring to move speeding electrons along an oval track by an applied magnetic field. The Xrays are then conveyed via beam lines from ports on the storage ring to an imaging tool that exposes silicon wafers coated with a chemical photoresist. That process will pennit the manufacture of 256-Mbit DRAMs in high volume (see Oct. 30, page 4). Research in synchrotron radiation already has shown its practical value as a lithographic tool with single exposures of below 0.25-micron line widths. However, making useful chips requires multiple exposures with numerous innovative steps at each level: X-ray mask fabrication, repeated alignment of masks and silicon wafer, and exposure and processing of the wafer on which the chips reside. Work so far Introducing System 90: The first 386 chip set that's more than a tricked-up 286 chip set. 386SX chip sets have been barking up the wrong tree. To save money, every last one used the tried-and-true, but aging mM PC architecture. A serious data bottleneck for the386SX. We designed System 90 differently; from scratch. The unique architecture interfaces directly with the 80386 microprocessor family. There's no compromise of system speed or mM PC/AT compatibility. The complement of standard peripherals runs up to ten times faster on the local bus. The ZyMOS look-ahead memory coprocessor gives you cachelike memory performance (0.1 wait state) with low-cost DRAMs (lOOns). In short, you get applications performance other chip sets claim but seldom deliver System 90 cuts production costs to the bone, as well. Just a ZJ!MOS s,..90 t _ t l Z , earp. PC_AT ... . . - ••l _ _ _ earp. 3-chip System 90/SX set, 386SX microprocessot; keyboard controllet; BIOS ROM and DRAMs do it No extra VLSI or TTL glue required. Now, you can offer true 386 performance at entry-level 386SX prices. And you're ready to profit from our soon-to-bereleased products for the full 32-bit 80386 family members. Unleash your 386SX products today with System 9O/SX chip sets. Call 800-227-2299 toll-free. Or write: ZyMOS Corp., System 90 Marketing, 477 N. Mathilda Ave., Sunnyvale, CA 94086. And let sleeping dogs lay. mM has designed and built an Xray lithography exposure station that has been used to make actual devices. The system, now installed at the National Synchrotron Light Source at Brookhaven National Laboratory (Upton, N.Y.), includes a set offour X-ray masks, each measuring 1 square inch, and a stepper that holds the four masks in place and intricately repositions the silicon wafer to allow multiple exposures. Work in X-ray lithography will shift from the National Laboratory to mM's Advanced Semiconductor Technology Center in East Fishkill, with the delivery of a compact electron storage ring in 1991. Now under construction in England by the Oxford instruments Group, that synchrotron ring uses conventional superconductive magnets that can bend speeding electrons more sharply than with the larger Oxford ring operating at Brookhaven. The compact source will yield soft Xrays suited to create the necessary ultra-thin circuit liIl.es. Full-scale semiconductor manufacturing with X-ray lithography is at least another five to six years away, but implementing a new technology of that magnitude requires a great deal of preliminary research and development. mM's work in X-ray lithography began more than 10 years ago and will continue at Brookhaven and at the Advanced Semiconductor Technology Center, where the plan is to exit with production-worthy tools and proce ses. -N. Moklwff Circle Reader Service No. 30 November 20, 1989 Ekctronic Engineering Times 31

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