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→Buffer descriptor C "ReceiveList"
There's a 4-bit flag in the main header controlling the behavior of C descriptors.
There's a 4-bit flag in the main header controlling the behavior of C descriptors.
If it has value 0, the C descriptor functionality is disabled. If it has value 1, there is no C descriptor. If it has value 2, there is a single C descriptor.
If it has value 0, the C descriptor functionality is disabled.
Otherwise it has (flag-2) C descriptors. Note that flag=2 and flag=3 both encode a single C descriptor.
If it has value 1, there is an "inlined" C buffer after the raw data. Received data is copied to ROUND_UP(cmdbuf+raw_size+index, 16)
If it has value 2, there is a single C descriptor.
Otherwise it has (flag-2) C descriptors. In this case, index picks which C descriptor to copy received data to [instead of picking the offset into the buffer].
Data sent with this method must have MemoryState 0x4000000 mask set.
After reply, X descriptors are written to the sender containing the address, size and index that were copied to.
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