On Tue, 27 Jun 2017, Michael Schmitz wrote: > Ondrej, > > could this be a partial write (target did not transfer the last byte)? > We do wait for TCR_LAST_BYTE_SENT, but only when there is no residual. Perhaps we should wait for TCR_LAST_BYTE_SENT whenever the 53c400 asserts /EOP. That is, whenever BASR_END_DMA_TRANSFER is set. -- > One would suppose the chip posts a phase mismatch in that case ... > > Cheers, > > Michael >