Kontron CP690HS, Руководство пользователя

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CP690HS Hot Swap
ID 20955, Rev. 05 Page 5 - 5
P R E L I M I N A R Y
5.1.1.2 The System Host (System Controller)
The System Controller must have the possibility to utilize the special signals defined by the
CompactPCI hot swap specification. If a high-availability system is used, it must additionally be
able to control the hardware connection with the peripheral boards (Hardware Connection Con-
trol).
5.1.1.3 The Hot Swap Board
To ensure that a board may be removed and replaced in a working bus without disturbing the
system it requires the following additional features:
• Precharge
• Power ramping
• Hot swap control and status register bits
• Automatic interrupt generation whenever a board is about to be removed or replaced.
• An LED to indicate that the board may be safely removed.
5.1.1.4 Software and Operating System
In a hot swap environment the software driver and the operating system have the following ad-
ditional requirements:
• The OS must provide the possibility to initialize PCI devices during normal operation
whenever required (allocate resources).
• The OS must provide the possibility to load or unload software drivers during normal op-
eration whenever required.