EMERSON KJ4001X1-CE1端子塊
在單個(gè)MVME7100上遠(yuǎn)程啟動(dòng)所使用的郵箱的選擇由全局環(huán)境變量（GEV）的設(shè)置確定。默認(rèn)郵箱為零。另一個(gè)GEV控制遠(yuǎn)程啟動(dòng)是啟用（默認(rèn)）還是禁用。有關(guān)遠(yuǎn)程啟動(dòng)GEV的定義，請(qǐng)參閱MOTLoad固件包用戶手冊(cè)中的遠(yuǎn)程啟動(dòng)附錄。MVME7100的IBCA需要通過(guò)主機(jī)的VMEbus網(wǎng)橋進(jìn)行適當(dāng)映射。例如，要使用安裝在插槽5中的MVME7100上的郵箱0遠(yuǎn)程啟動(dòng)，主機(jī)需要一個(gè)映射來(lái)支持VME CR/CSR空間（0x28000+0x7f610）中地址0x002ff610的讀寫。引導(dǎo)映像有效的引導(dǎo)映像，無(wú)論是POST、USER還是Alternate MOTLoad，都位于閃存上8MB的1MB邊界上。圖像大小可能超過(guò)1MB。通過(guò)存在兩個(gè)有效的圖像密鑰和其他健全性檢查，確定圖像有效。有效的啟動(dòng)映像以下表中定義的結(jié)構(gòu)開頭：UserDefined unsigned integer 8 User defined ImageKey 1 unsigned integer 1 0x414c5420 ImageKey 2 unsigned整型1 0x424f4f54 ImageChecksum unsigned整數(shù)1 image checksum ImageSize unsigned整數(shù)1必須是4的倍數(shù)
The selection of the mailbox used by remote start on an individual MVME7100 is
determined by the setting of a global environment variable (GEV). The default mailbox is
zero. Another GEV controls whether remote start is enabled (default) or disabled. Refer to
the Remote Start appendix in the MOTLoad Firmware Package User's Manual for remote
start GEV definitions.
The MVME7100’s IBCA needs to be mapped appropriately through the master’s VMEbus
bridge. For example, to use remote start using mailbox 0 on an MVME7100 installed in slot
5, the master would need a mapping to support reads and writes of address 0x002ff610 in
VME CR/CSR space (0x280000 + 0x7f610).Boot Images
Valid boot images whether POST, USER, or Alternate MOTLoad, are located on 1MB
boundaries within the upper 8MB of flash. The image may exceed 1MB in size. An image
is determined valid through the presence of two valid image keys and other sanity checks.
A valid boot image begins with a structure as defined in the following table:UserDefined unsigned integer 8 User defined
ImageKey 1 unsigned integer 1 0x414c5420
ImageKey 2 unsigned integer 1 0x424f4f54
ImageChecksum unsigned integer 1 Image checksum
ImageSize unsigned integer 1 Must be a multiple of 4
