Energy Field 279
1580 FOR X=1 TO 250:NEXT
1590 RETURN
1600 PRINT TAB(14WENERGY FIELD"
1610 PEN 2:PRINT:PRINT"Guard the tube with your craft by setting up energy shields at the 4 open ends of the syste m.
1620 PRINT"Setting one up at a tube NOT containing an enemy will result in your	destruction."
1630 PEN 3:PRINT:PRINT"Move UP and DOWN using the cursor keys.
1640 PEN 2:PRINT:PRINT
1650 PRINT"Use SPACEBAR to place an en ergy field at a tube mouth. Letting an enemy past or self destructing results i n power loss and if this is too great then the game is over."
1660 PEN 3:PRINT: PRINT: PRINT"	PRESS
ANY KEY TO START THE GAME
1670 IF INKEYS<>"" THEN 1670
1680 IF INKEYS="" THEN 1680 ELSE CLS 1690 RETURN
1700 FOR DX=1 TO 2:FOR PX=1 TO 4:READ P( DX,PX),Q(DX,PX):NEXT PX,DX:RETURN
1710 DATA 1,21,8,1,24,1,22,21
1720 DATA 6,1,22,1,24,21,8,21 .