PPT Slide
Fully Associative Cache - A cache which allows main memory addresses to be loaded to any cache line - this is the idealcache since replacement is not constrained at all, but associative memory is complex and expensive - by comparison a direct mapped cache is completely constrained and a set associative is a compromise.
Gather Read List - A list of not necessarily contiguous addresses in memory that are to be read into a contiguous buffer - e.g. a host memory may have multiple blocks in memory scattered through memory space that are to be read by an I/O device which will gather all these blocks into a single contiguous buffer before an I/O operation.
GPIO - General Purpose I/O - digital inputs and outputs at TTL logic levels which can be used as a generic interface to digital devices such as LEDs.