Quick Screen Display 2068

If you are looking for a way to rapidly store and retrieve an entire screen display, then this approach may be useful to you. It moves the 6912 bytes of the normal screen display file (DFILE1) to an address in RAM, from which it may then be retrieved as one block of data and reinserted into the display file when desired. Several such blocks of display data might be stored and retrieved in rapid succession for animated displays, moving backgrounds or overprinting.