Overlapping I/O with computation. The driver inputs a sequence of data items, each of which must be processed before the next item is copied. (The status check has been omitted in the pseudo code for clarity): repeat    write parameters for input operation    write opcode    repeat       read busy until FALSE    copy data item from input buffer    process data item The device does not have to be idle during the processing phase. Modify the code such that the processing is overlapped with the I/O device operation.

Overlapping I/O with computation.

The driver inputs a sequence of data items, each of which must be processed before the next item is copied.
(The status check has been omitted in the pseudo code for clarity):

repeat

   write parameters for input operation

   write opcode

   repeat

      read busy until FALSE

   copy data item from input buffer

   process data item

The device does not have to be idle during the processing phase. Modify the code such that the processing is overlapped with the I/O device operation.