Chapter 1 - Introduction; Module Features; Architecture; Cpu Chip - Xycom XVME-655 Manual

Chapter 1 – Introduction
The XVME-655 Pentium
to combine the high performance and ruggedized packaging of the VMEbus with the
broad application software base of the IBM PC/AT standard. The module integrates the
latest processor and chipset technology. At the core of the module is an Intel
CPU, the highest performance PC-compatible processor available today. This new
generation of Pentium processors uses power-reducing technology, allowing them to run
at higher speeds and temperatures than their predecessors.

Module Features

The XVME-655 offers the following features:
·
75, 100, 133, 166, and 200 MHz Pentium CPUs, and 200 and 233 MHz MMX™
Pentium CPUs
·
8 Mbyte to 64 Mbyte fast-page EDO DRAM
·
512 Kbyte synchronous pipeline Level 2 cache (COAST) on 133, 166, 200, or 233
MHz CPU configurations
·
PCI local bus
·
PCI local bus SVGA controller, 1024 x 768
·
PCI enhanced IDE controller with DMA
·
PCI to VMEbus interface
·
Two 16550-compatible serial ports
·
EPP/ECP-compatible parallel port
·
Optional PCI and PC/AT expansion
·
Optional PCI Ethernet controller with 10BaseT and 10Base2 interfaces
·
One floppy drive with a SA-450 interface

Architecture

This section describes the architecture of the XVME-655 processor module.

CPU Chip

The XVME-655 supports 75 MHz, 100 MHz, 133 MHz, 166 MHz, and 200 MHz
Pentium processors, in addition to 200 MHz and 233 MHz MMX Pentium processors.
The Pentium processor features a supescalar architecture with two pipelined integer units
and a pipelined floating point unit which allows two instructions to be executed per
clock cycle. A dynamic branch prediction unit and separate 8 Kbyte data and instruction
caches further enhance Pentium performance.
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®
PC/AT™-compatible VMEbus processor module is designed
®
Pentium
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