處理能力的應用
IS420ESWBH3A是一款功能齊全的Pentium III兼容計算機，采用單槽、被動冷卻的Eurocard外形，采用Intel 815E芯片組的先進技術，前端總線速率為133MHz。IS420ESWBH3A符合VME規范版本C.1，具有透明的PCI到VME橋接器，允許板在多CPU系統中用作系統控制器或外圍CPU。IS420ESWBH3A提供了桌面系統上常見的功能，例如：?高達512MB PC133 SDRAM?內置SVGA支持，支持4 MB DRAM顯示緩存?內置雙10/100 Mbit以太網?IDE驅動器支持?軟盤驅動器支持?兩個RS232串行端口?雙USB端口?實時時鐘/日歷?前面板重置開關?微型揚聲器?鍵盤/鼠標端口815E芯片組允許IS420ESWBH3A提供增強功能，如133MHz前端總線支持和ATA-100 IDE支持。IS420ESWBH3A能夠執行當今許多桌面操作系統，如Microsoft的Windows 95、Windows 98SE、Windows NT 4.0、Windows 2000和各種基于Linux的操作系統。 IS420ESWBH3A的標準桌面功能。IS420ESWBH3A產品手冊16 IS420ESUBH3A提供了對嵌入式應用程序有用的功能，例如：?I 2 C總線支持?遠程以太網啟動?高達512 MB的可啟動小型閃存（可選）?四個通用可編程定時器（兩個16位和兩個32位）?軟件可選的帶復位的看門狗定時器?32KB非易失性SRAM此外，IS420ESWBH3A為PMC擴展站點提供前面板訪問。IS420ESWBH3A能夠執行當今許多嵌入式操作系統，如VxWorks、QNX、Solaris、LynxOS和Microsoft的嵌入式Windows NT。本手冊第3章介紹了IS420ESWBH3A的嵌入式功能。IS420ESWBH3A適用于各種應用，例如：電信、模擬、儀表、工業控制、過程控制和監控、工廠自動化、自動化測試系統、數據采集系統以及任何需要在單個VME插槽中具有最高性能處理能力的應用。
IS420ESWBH3A的技術
IS420ESWBH3A采用了最新的Intel芯片組技術815E。該芯片組通過使用新的高級集線器架構（AHA）而與上一代設備不同。AHA通過將許多高帶寬I/O訪問（如IDE或USB設備）與PCI訪問分離，從而緩解PCI總線上的瓶頸，從而提高了系統性能。此外，815E芯片組為主板芯片組帶來了新的集成水平，并提供了其他芯片組之外的其他功能（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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