... unpredictable what are stored there after it is turned on again In other words, you cannot determine what must be included in the RAM data area In the RAM, you can only reserve an area for writing data ... write as follows to prepare a separate section for storing the addition results in: SECTION ROM_DATA,DATA,LOCATE=H'1100 DATA1: DATA.B 10 DATA2: DATA.B 100 SECTION RAM_DATA,DATA,LOCATE=H'2000 ANSWER: ... reserve an area for writing there: SECTION WORK,DATA,LOCATE=H'2000 DATA1: RES.B DATA2: RES.B ANSWER: RES.B In the above, DATA1, DATA2 and ANSWER represent the H'2000, H'2001 and H'2002 addresses...