FIFO id
Must be the same as ROCKFIFOT_OTfid
FIFO id
Must be the same as ROCKFIFIT_OTfid
Empty if no error
rid returned by rock open
cache type, default is minimal
Nr of elements to read, default 1
Nr of frames to read, default 1
off: disable read-ahead caching
minimal: read more only if hf
advanced: read until empty
block: force block read
block_advanced: block read all the fifo
Return the contents of the cache
Less elements can be read out
Less framess can be read out
A parity error is not considered an error!