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3BSE042236R2觸摸屏顯示器
IDE設(shè)備和軟盤驅(qū)動(dòng)器
XVME-660主IDE和軟盤驅(qū)動(dòng)器信號(hào)通過P2連接器路由，提供了連接兩個(gè)IDE設(shè)備和一個(gè)外部設(shè)備的簡化方法軟盤驅(qū)動(dòng)器。輔助IDE主信號(hào)支持compact flash站點(diǎn)和不支持輔助IDE從屬信號(hào)。
當(dāng)與XVME-977或XVME/979大容量存儲(chǔ)模塊一起使用時(shí)，IDE設(shè)備和軟盤驅(qū)動(dòng)器不需要位于處理器旁邊。使用提供的六英寸帶狀電纜（連接XVME板的J2 VME背板連接器），XVME-977或XVME-979可安裝在離VME背板上的XVME-660。這允許在配置VMEbus卡籠。
對于需要VMEbus機(jī)箱外部大容量存儲(chǔ)的應(yīng)用程序，XVME-973/1驅(qū)動(dòng)適配器模塊插入VMEbus J2接頭。本模塊提供：IDE和軟盤信號(hào)的行業(yè)標(biāo)準(zhǔn)連接。一個(gè)軟盤驅(qū)動(dòng)器可以是：
連接到XVME-973/1。此驅(qū)動(dòng)器可能為2.88 MB、1.44 MB、1.2 MB或大小為720KB、360KB。有關(guān)XVME-973/1的更多信息，請參閱第5章。注意IDE控制器支持增強(qiáng)的PIO模式，這減少了向硬盤傳輸16位數(shù)據(jù)的周期時(shí)間。與您的驅(qū)動(dòng)器手冊，查看您使用的驅(qū)動(dòng)器是否支持這些模式。這個(gè)PIO模式越高，循環(huán)時(shí)間越短。作為IDE電纜長度循環(huán)時(shí)間的減少會(huì)導(dǎo)致不穩(wěn)定的操作。因此，保持IDE電纜盡可能短符合您的最佳利益?？梢栽贐IOS設(shè)置中選擇PIO模式（參見第36頁）。如果驅(qū)動(dòng)器：支持自動(dòng)ID命令。如果遇到問題，請更改將模式轉(zhuǎn)換為標(biāo)準(zhǔn)模式。
小心電纜總長度不得超過18英寸。此外，如果兩個(gè)驅(qū)動(dòng)器連接時(shí)，它們之間的距離不得超過6英寸。
小型閃存站點(diǎn)
主板上的閃存插座僅支持I型閃存卡。
緊湊型閃存作為主設(shè)備駐留在輔助IDE端口上司機(jī)是必需的。如果在BIOS引導(dǎo)菜單中配置，則可以從小型閃存驅(qū)動(dòng)器引導(dǎo)XVME-660（將可引導(dǎo)插件卡移到列表中較高的位置）。
VMEbus接口
XVME-660使用PCI本地總線與VMEbus接口。VMEbus接口支持與VMEbus之間的全DMA、用于發(fā)布寫入的集成FIFO、塊模式傳輸和讀-修改-寫操作。該接口包含一個(gè)主機(jī)和八個(gè)從映像，可在多種模式下編程，以允許VMEbus：映射到XVME-660本地存儲(chǔ)器。這使得配置VMEbus變得容易保護(hù)模式和實(shí)模式程序中的資源XVME-660還包含板載硬件字節(jié)交換（見表1-2）。
IDE Devices and Floppy Drives
The XVME-660 primary IDE and floppy drive signals are routed through the P2 connector, providing a simplified method of connecting up to two IDE devices and one external
floppy drive. The secondary IDE master signals support the compact flash site and the
secondary IDE slave signals are not supported.
When used with the XVME-977 or the XVME-979 mass storage modules, the IDE devices and floppy drives do not need to be located next to the processor. Using the supplied six-inch ribbon cable (which connects the XVME boards' J2 VME backplane connectors), the XVME-977 or the XVME-979 can be installed up to six slots away from the
XVME-660 on the VME backplane. This allows greater flexibility in configuring the
VMEbus card cage.
For applications that require mass storage outside the VMEbus chassis, the XVME-973/1
drive adapter module plugs onto the VMEbus J2 connector. This module provides
industry standard connections for IDE and floppy signals. One floppy drive can be
connected to the XVME-973/1. This drive may be 2.88 MB, 1.44 MB, 1.2 MB, or
720 KB, 360 KB in size. For more information on the XVME-973/1, refer to Chapter 5. Caution
The IDE controller supports enhanced PIO modes, which reduce the cycle times for 16-bit data transfers to the hard drive. Check with your
drive manual to see if the drive you are using supports these modes. The
higher the PIO mode, the shorter the cycle time. As the IDE cable length
increases, this reduced cycle time can lead to erratic operation. As a result, it is in your best interest to keep the IDE cable as short as possible.
The PIO modes can be selected in the BIOS setup (see p. 36). The Autoconfiguration will attempt to classify the connected drive if the drive
supports the auto ID command. If you experience problems, change the
Transfer Mode to Standard.
Caution
The total cable length must not exceed 18 inches. Also, if two drives are
connected, they must be no more than six inches apart.
Compact Flash Site
The compact flash socket on the mainboard will support type I Compact Flash cards only.
The compact flash resides as a master on the secondary IDE port. There are no unique
drivers required. The XVME-660 can be booted from the compact flash drive if configured in the BIOS Boot menu (move Bootable Add-in Cards higher in the list).
VMEbus Interface
The XVME-660 uses the PCI local bus to interface to the VMEbus. The VMEbus interface supports full DMA to and from the VMEbus, integral FIFOs for posted writes, block
mode transfers, and read-modify-write operations. The interface contains one master and
eight slave images that can be programmed in a variety of modes to allow the VMEbus to
be mapped into the XVME-660 local memory. This makes it easy to configure VMEbus
resources in protected and real mode programs The XVME-660 also incorporates onboard hardware byte-swapping (see Table 1-2).
