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Yarc Systems Corp, the Thousand Oaks, California company whose ridiculous name is said to stand for Yet Another Ruddy Co processor, although those with suspicious minds are convinced that it started life as Cray backwards, has enhanced its McCray co-processor for the Macintosh II. The product is built around the Advanced Micro Devices Am29000 RISC with optional Am29027 floating point co-processor (CI No 927), and Yarc claims that it runs at up to 17 VAX MIPS. It can now access over 32Mb of main memory on the Mac II’s NuBus, and will now operate with all available NuBus high-resolution displays, the company claims. On the software front, it now supports Apple’s Quickdraw software, and windowing is available. But we mustn’t call it the McCray any more: according to Newsbytes, Yarc has submitted to pressure from Cray Research Inc over the McCray name, and has now agreed to change it to the NuSuper. Yarc has also begun shipping a 68020-based co-processor board designed to turn an AT-alike into an engineering workstation. The Yarc-785+ comes in 25MHz, 30MHz, 33MHz and 40MHz versions – that must be pushing it a bit because the fastest rated version of the 68020 is 33MHz although if you get a good one it is always possible to drive the thing faster. It comes with up to 8Mb of memory and the MC68882 floating point unit, and is claimed to work transparently under control of MS-DOS. And the company claims that with the 40MHz clock crystal, you find your little AT is suddenly motoring at 5 VAX MIPS. No prices for the co processors were available.

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