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June 21, 1987


By CBR Staff Writer

Modular Computer Systems is pitching for leadership in the real-time computing world with a re-engineered version of its top-end 32-bit mini, the Classic 32/85. The Fort Lauderdale, Florida company now owned by AEG AG of West Germany, has created the new Classic 32/87 by redesigning the input-output controllers and enhancing the central processing units to improve interrupt performance and increase the overall input-output throughput. The central processing complex contains one or more central processors and one or more microprogrammable input-ouput control processors, each connected to the ports of from one to eight separate memory subsystems, each of which can contain from 2Mb to 32Mb for a maximum of 256Mb of main memory. There is also a 64Kb four-way set associative cache memory, multi-level mapped memory addressing, and 16 sets of map-ping register caches. An address word of 30 bits gives 1Gb maximum virtual program size, and the processor executes an eight-stage instruction pipeline. There are 128 sets of 15 32-bit general-purpose registers, and 8K-words of writeable control store for creating special instructions. The CPU also includes an integral fast floating point processor that allows parallel operation on 32-, 48- and 64-bit operands. No pri-ces were given. The 32/87 runs the old MAX IV and new MAX 32 real-time operating systems, and also ModComp’s new Realix real-time implementation of Unix System V.2 under MAX 32, described in detail in CI No 606.

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