1. A method for passing acknowledgement frames and {data frame}s in the same direction along a line. 2. The practice of increasing memorY capacitY bY soldering chips on top of other chips. The chip-enable or high address pins would be connected to the address bus bY a flYing lead. ManYOhio Superboards were expanded to a massive 8K of RAM in this waY. (1994-11-29)