处理能力的应用
IS420ESWBH3A是一款功能齐全的Pentium III兼容计算机，采用单槽、被动冷却的Eurocard外形，采用Intel 815E芯片组的先进技术，前端总线速率为133MHz。IS420ESWBH3A符合VME规范版本C.1，具有透明的PCI到VME桥接器，允许板在多CPU系统中用作系统控制器或外围CPU。IS420ESWBH3A提供了桌面系统上常见的功能，例如：•高达512MB PC133 SDRAM•内置SVGA支持，支持4 MB DRAM显示缓存•内置双10/100 Mbit以太网•IDE驱动器支持•软盘驱动器支持•两个RS232串行端口•双USB端口•实时时钟/日历•前面板重置开关•微型扬声器•键盘/鼠标端口815E芯片组允许IS420ESWBH3A提供增强功能，如133MHz前端总线支持和ATA-100 IDE支持。IS420ESWBH3A能够执行当今许多桌面操作系统，如Microsoft的Windows 95、Windows 98SE、Windows NT 4.0、Windows 2000和各种基于Linux的操作系统。 IS420ESWBH3A的标准桌面功能。IS420ESWBH3A产品手册16 IS420ESUBH3A提供了对嵌入式应用程序有用的功能，例如：•I 2 C总线支持•远程以太网启动•高达512 MB的可启动小型闪存（可选）•四个通用可编程定时器（两个16位和两个32位）•软件可选的带复位的看门狗定时器•32KB非易失性SRAM此外，IS420ESWBH3A为PMC扩展站点提供前面板访问。IS420ESWBH3A能够执行当今许多嵌入式操作系统，如VxWorks、QNX、Solaris、LynxOS和Microsoft的嵌入式Windows NT。本手册第3章介绍了IS420ESWBH3A的嵌入式功能。IS420ESWBH3A适用于各种应用，例如：电信、模拟、仪表、工业控制、过程控制和监控、工厂自动化、自动化测试系统、数据采集系统以及任何需要在单个VME插槽中具有最高性能处理能力的应用。
IS420ESWBH3A的技术
IS420ESWBH3A采用了最新的Intel芯片组技术815E。该芯片组通过使用新的高级集线器架构（AHA）而与上一代设备不同。AHA通过将许多高带宽I/O访问（如IDE或USB设备）与PCI访问分离，从而缓解PCI总线上的瓶颈，从而提高了系统性能。此外，815E芯片组为主板芯片组带来了新的集成水平，并提供了其他芯片组之外的其他功能（如ATA-100支持）。
Application of processing capacity
IS420ESWBH3A is a fully functional Pentium III compatible computer, which adopts a single slot, passively cooled Eurocard shape and the advanced technology of Intel 815E chipset. The front-end bus speed is 133MHz. IS420ESWBH3A conforms to VME specification version C 1. It has a transparent PCI to VME bridge, allowing the board to be used as a system controller or peripheral CPU in a multi CPU system. IS420ESWBH3A provides common functions on the desktop system, such as: • Up to 512MB PC133 SDRAM • Built in SVGA support, supporting 4 MB DRAM display cache • Built in dual 10/100 Mbit Ethernet • IDE drive support • Floppy disk drive support • Two RS232 serial ports • Dual USB ports • Real time clock/calendar • Front panel reset switch • Micro speaker • Keyboard/mouse port 815E chipset allows IS420ESWBH3A to provide enhanced functions, For example, 133MHz front-end bus support and ATA-100 IDE support. IS420ESWBH3A can execute many desktop operating systems today, such as Microsoft's Windows 95, Windows 98SE, Windows NT 4.0, Windows 2000 and various Linux based operating systems. The standard desktop function of IS420ESWBH3A. IS420ESWBH3A Product Manual 16 IS420ESUBH3A provides functions that are useful for embedded applications, such as: • I 2 C bus support • Remote Ethernet startup • Bootable small flash memory up to 512 MB (optional) • Four universal programmable timers (two 16 bit and two 32 bit) • Software optional watchdog timer with reset • 32KB non-volatile SRAM In addition, IS420ESWBH3A provides front panel access for PMC expansion sites. IS420ESWBH3A can execute many embedded operating systems today, such as VxWorks, QNX, Solaris, LynxOS and Microsoft's embedded Windows NT. Chapter 3 of this manual describes the embedded functions of IS420ESWBH3A. IS420ESWBH3A is applicable to various applications, such as telecommunication, analog, instrument, industrial control, process control and monitoring, factory automation, automatic test system, data acquisition system and any application requiring the highest performance processing capability in a single VME slot
IS420ESWBH3A technology
IS420ESWBH3A uses the latest Intel chipset technology 815E. This chipset differs from the previous generation devices by using the new Advanced Hub Architecture (AHA). AHA improves system performance by separating many high bandwidth I/O accesses (such as IDE or USB devices) from PCI access, thereby easing the bottleneck on the PCI bus. In addition, the 815E chipset brings a new level of integration to the motherboard chipset and provides functions other than other chipsets (such as ATA-100 support).
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