17 DRIVE=2:REM INITIALIZE FOR A TWO DRIVE SYSTEM - DRIVE 1 WILL BE FIRST›18 DISK$="D1:":REM INITIALIZE›50 DRIVE=3-DRIVE:REM SWITCH DRIVES, WILL DO DRIVE 1 FIRST›55 DISK$(2,2)=STR$(DRIVE):REM PUT CORRECT DRIVE NUMBER›59 TRAP 50:REM TRAP DISK ERROR›105 ARRAY$=" ":REM INITIALIZE›115 PRINT "}":REM CLEAR SCREEN›520 POKE 82,2:REM LEFT MARGIN TO DEFAULT›525 POSITION 2,22:PRINT "œ0=NEXT DRIVE WHICH "›535 IF CHOICE=0 THEN 50:REM SWITCH DRIVES ON CHOICE OF 0›