User`s guide

DWMBB Adapter
3.10.1 ECC Errors Detected During I/O PMR Read Accesses
If a correctable ECC error occurs during an I/O read of a PMR, the I/O
read data is corrected and returned to the requesting XMI node with a
CRD function code. The correctable error is logged in AESR and an INTR
is issued, if enabled.
If an uncorrectable ECC error occurs during an I/O read of a PMR, the
uncorrectable I/O read data is sent with good parity and an RER function
code to the XMI node that issued the I/O transaction. The uncorrectable
error is logged in the Error Summary Register (AESR), and an INTR is
issued, if enabled.
3.10.2 ECC Errors Detected During PMR Accesses for DMA Address
Translation
If a correctable ECC error occurs during a DMA address translation, the
PMR data is corrected and used to form the extended XMI address. The
correctable error is logged and an INTR is generated, if enabled.
If an uncorrectable ECC error occurs during a DMA read address
translation, the DMA transaction is aborted, the VAXBI node that is
waiting for the DMA read data is NO ACKed, the uncorrectable error is
logged, and an INTR is generated, if enabled.
If an uncorrectable ECC error occurs during a DMA write address
translation, the DMA transaction is aborted, the uncorrectable error is
logged, and an IVINTR and an INTR are generated, if enabled.
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