BENTLY 3500/16通道繼電器模塊
?前面板“生命體征”指示燈（電源、Ultra IDE硬盤(pán)驅動(dòng)器活動(dòng)、VMEbus SYSFAIL和以太網(wǎng)狀態(tài)）?三個(gè)通用可編程16位定時(shí)器?軟件控制看門(mén)狗定時(shí)器?輔助IDE上多達192 Mbyte的可啟動(dòng)閃存?32 Kbyte的非易失性SRAM?PMC VMIVME-7740支持標準PC/AT I/O功能，如表1-1所列。第25頁(yè)上的圖1-1顯示了VMIVME-7740的框圖，強調了包括PCI到VMEbus橋接器在內的I/O功能。兩個(gè)串行端口（16550兼容RS-232C）COM1 COM2前面板，雙Micro-D 9針AT型鍵盤(pán)/鼠標控制器，帶有PS/2型適配器M/K前面板PS/2型連接器，迷你DIN圓形（母）適配器“Y”電纜提供的超級VGA視頻控制器，帶有4 Mbyte SGRAM SVGA前面板DB15HD高密度（母）雙以太網(wǎng)、10BaseT、100BaseTx、Novell NE-2000兼容LAN1 LAN2前面板RJ45
? Front panel “vital sign” indicators (power, Ultra-IDE hard drive activity, VMEbus SYSFAIL, and Ethernet status) ? Three general-purpose programmable 16-bit timers ? Software-controlled Watchdog Timer ? Up to 192 Mbyte of bootable flash on secondary IDE ? 32 Kbyte of non-volatile SRAM ? PMC The VMIVME-7740 supports standard PC/AT I/O features such as those listed in Table 1-1. Figure 1-1 on page 25 shows a block diagram of the VMIVME-7740 emphasizing the I/O features including the PCI-to-VMEbus bridge.Two Serial Ports (16550-Compatible RS-232C) COM1 COM2 Front Panel, Dual Micro-D 9-Pin AT-Style Keyboard/Mouse Controller with a PS/2-Style Adapter M/K Front Panel PS/2-Style Connector, Mini-DIN Circular (female) Adapter “Y” Cable Supplied Super VGA Video Controller with 4 Mbyte SGRAM SVGA Front Panel DB15HD High Density (female) Dual Ethernet, 10BaseT, 100BaseTx, Novell NE-2000 Compatible LAN1 LAN2 Front Panel RJ45
