When the master bridge receives a read request with the Length = 0x1, FirstBE = 0x00, and LastBE = 0x00, it responds by sending a completion with Status = Successful Completion. When the master bridge receives a write request with the Length = 0x1, FirstBE = 0x00, and LastBE = 0x00 there is no effect.
Table 3-7:
Master Bridge Response to Abnormal Conditions
|
Transfer Type
|
Abnormal Condition
|
Bridge Response
|
|
Read
|
DECERR response
|
MDE interrupt strobe asserted.
Completion returned with Unsupported Request status.
|
|
Write
|
DECERR response
|
MDE interrupt strobe asserted.
|
|
Read
|
SLVERR response
|
MSE interrupt strobe asserted.
Completion returned with Completer Abort status.
|
|
Write
|
SLVERR response
|
MSE interrupt strobe asserted.
|
|
Write
|
Poison bit set in request
|
MEP interrupt strobe asserted.
Data is discarded.
|
|
Read
|
DECERR response
|
MDE interrupt strobe asserted.
Completion returned with Unsupported Request status.
|
|
Write
|
DECERR response
|
MDE interrupt strobe asserted.
|