10 GRAPHICS 0›20 DLIST=PEEK(560)+256*PEEK(561)›30 LMSLOW=DLIST+4›40 LMSHIGH=DLIST+5›50 SCREENLOW=0›60 SCREENHIGH=0›70 SCREENLOW=SCREENLOW+40:REM Next line›80 IF SCREENLOW<256 THEN GOTO 120:REM Overflow?›90 SCREENLOW=SCREENLOW-256:REM Yes, adjust pointer›100 SCREENHIGH=SCREENHIGH+1›110 IF SCREENHIGH=256 THEN END ›120 POKE LMSLOW,SCREENLOW›130 POKE LMSHIGH,SCREENHIGH›140 GOTO 70›