Selecting math coprocessors

Article Abstract:

Spreadsheet packages and other computation-intensive PC-based applications can benefit from the use of math coprocessors, which extend the architecture of the CPU by supplying hardware support for floating-point arithmetic. Math coprocessors are usually optional peripherals installed inside the PC, but users must determine whether the device is compatible with the CPU, whether there is an appropriate socket for the coprocessor in the computer, and whether the device is approved for use with the application by the software vendor. Math coprocessors for the Intel 80386 CPUs in IBM-compatible PCs and the Motorola 68030 CPUs in Apple Macintosh IIs are described; the Intel 80486 and Motorola 68040 integrate the CPU and the math coprocessor on the same chip. Also described are many of the scientific and engineering applications that require a math coprocessor, including AutoCAD from Autodesk Inc and the Prime Factor FFT digital signal analysis package from Alligator Technologies Inc.

Computer aided engineering, Scientific software, Compatibility (Computers), Compatible Hardware, Comparison, buyers guide, Data Analysis, Floating-Point Arithmetic, Floating point arithmetic, Expansion Processor Units, Computer-Aided Engineering, Math Coprocessor

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How ICs impact workstations

Article Abstract:

The design of a high-performance, low-cost Hewlett-Packard workstation provides a case study in how performance, design and delivery goals impact the selection of ICs for the system. The company wanted to implement its Precision-Architecture, Reduced-Instruction-Set Computer (PA-RISC) system in a single-user workstation that would provide a high level of performance for graphics and other applications while maintaining backwards compatibility with existing PA-RISC systems. The workstation design team had the 'flexibility, resources and expertise' to select what they needed from full-custom, application-specific, commodity and standard logic ICs to implement the system. Criteria for and selection of the processor architecture, floating-point coprocessor, SRAMs and custom memory-input/output interface controller are discussed.

Semiconductors and related devices, Computer integrated systems design, Product development, Integrated circuits, Processor architectures, Systems analysis, Hewlett-Packard Co., HWP, Workstations, System Design, Criteria, Processor Architecture, Case Study, RISC, RISC processors

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