The system must then qualify the new resource and incorporate it into system operation. On the other hand, imagine a multiprocessing system that is to be upgraded with new enhanced processor boards. The VITA 1.4 proposed American National Standard for VME64x live insertion provides a basic framework for supporting live insertion. For example, the sequences that a board must go through when it is removed is shown in the list below. Typical Board De-allocation Process System administration software disables new connections to board's device driver.
System waits for all connections to terminate or forces existing connections to terminate.
Daisy-chain switch on backplane is enabled. VMEbus interface ASICs and ETL transceivers are disabled. Craft Person unseats the ejector handles and the ejector handle switches open. Board's logic power is removed. VMEbus and primary power pins break contact with the backplane.