DJA7: DSK7: SYSTEM DJA19: DSK19: PAGE & SWAP DUA0: DSK0: SYSTEM DUA1: DSK1: OPERATOR, SUPPORT DUA2: DSK2: DIRECTORIES DUA3: DSK3: DIRECTORIES DUA4: DSK4: DIRECTORIES DUA5: DSK5: ADA, DRS DUA6: DSK6: DRS DUA8: DSK8: DEMO DUA9: DSK9: RESERVED DUA10: DSK10: RESERVED DUA11: DSK11: RESERVED DUA12: DSK12: RESERVED DUA13: DSK13: SCRATCH