User`s guide

XMI Registers
Bus Error Register (XBER)
bit<15>
Name: Command NO ACK
Mnemonic: CNAK
Type: R/W1C, 0
When set, CNAK indicates that a command cycle transmitted by the
node has received a NO ACK confirmation caused by either a reference
to a nonexistent memory location or a command cycle parity error.
Only XMI commander nodes are required to implement this bit. If not
implemented, nodes return zero. For commanders implementing error
recovery, this bit is set only if the reattempts fail.
bit<14>
Name: Reserved
Mnemonic: None
Type: R/W, 0
Reserved; must be zero.
bit<13>
Name: Transaction Timeout
Mnemonic: TTO
Type: R/W1C, 0
When set, TTO indicates that a transaction initiated by the node
failed due to a transaction timeout. Only XMI commander nodes are
required to implement this bit. If not implemented, nodes return zero.
For commanders implementing error recovery, this bit is set only if the
reattempts fail.
bit<12>
Name: Node-Specific Error Summary
Mnemonic: NSES
Type: RO, 0
When set, NSES indicates that a node-specific error condition has been
detected. The exact nature of the error is contained in node-specific
registers.
bit<11>
Name: Extended Test Fail
Mnemonic: ETF
Type: R/W1C, 1 (processors), 0 (all others)
When set, ETF indicates that the node has not yet passed its extended
test. This bit clears when the node passes its extended test. Only
processor nodes implement extended test; all other nodes power up
with ETF cleared.
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