Retro Recovery

Retro Recovery

Difficulty: ❄ ❄ ❄ ❄ ❄
Join Mark in the retro shop. Analyze his disk image for a blast from the retro past and recover some classic treasures.

Hints

Retro Recovery

Wow! A disk from the 1980s! I remember delivering those computer disks to the good boys and girls. Games were their favorite, but they weren’t like they are now.

Retro Recovery

I miss old school games. I wonder if there is anything on this disk? I remember, when kids would accidentlly delete things………. it wasn’t to hard to recover files. I wonder if you can still mount these disks?

Retro Recovery

I know there are still tools available that can help you find deleted files. Maybe that might help. Ya know, one of my favorite games was a Quick Basic game called Star Trek.

Items

floppy.img

You got yourself a floppy disk image from an old IBM PC! Retro!!!!

Solution

The hints strongly suggested that I needed to find deleted files, specifically a game. I decided to use PhotoRec, a classic and powerful data recovery tool perfect for this scenario.

I launched photorec against the disk image:

┌──(kali㉿mac-vikali)-[~/Desktop/floppy]
└─$ photorec floppy.img     

The tool identified the disk image. I selected it and proceeded:

PhotoRec 7.2, Data Recovery Utility, February 2024
Christophe GRENIER <grenier@cgsecurity.org>
https://www.cgsecurity.org

  PhotoRec is free software, and
comes with ABSOLUTELY NO WARRANTY.

Select a media and choose 'Proceed' using arrow keys:
>Disk floppy.img - 1474 KB / 1440 KiB (RO)

>[Proceed ]  [  Sudo  ]  [  Quit  ]

Note: Some disks won't appear unless you're root user.
Disk capacity must be correctly detected for a successful recovery.
If a disk listed above has an incorrect size, check HD jumper settings and BIOS
detection, and install the latest OS patches and disk drivers.

Next, photorec detected a FAT12 partition, which is the standard file system for old floppy disks:

PhotoRec 7.2, Data Recovery Utility, February 2024
Christophe GRENIER <grenier@cgsecurity.org>
https://www.cgsecurity.org

Disk floppy.img - 1474 KB / 1440 KiB (RO)

     Partition                  Start        End    Size in sectors
      Unknown                  0   0  1    79   1 18       2880 [Whole disk]
>   P FAT12                    0   0  1    79   1 18       2880 [NO NAME]

>[ Search ]  [Options ]  [File Opt]  [  Quit  ]
                              Start file recovery

I selected the partition and confirmed the filesystem type as “Other” (FAT/NTFS/HFS+/…):

PhotoRec 7.2, Data Recovery Utility, February 2024
Christophe GRENIER <grenier@cgsecurity.org>
https://www.cgsecurity.org

   P FAT12                    0   0  1    79   1 18       2880 [NO NAME]

To recover lost files, PhotoRec needs to know the filesystem type where the
file were stored:
 [ ext2/ext3 ] ext2/ext3/ext4 filesystem
>[ Other     ] FAT/NTFS/HFS+/ReiserFS/...

When asked about the scan type, I chose to scan the Free space (unallocated space) to look for deleted files, although scanning the “Whole” partition would also work:

PhotoRec 7.2, Data Recovery Utility, February 2024
Christophe GRENIER <grenier@cgsecurity.org>
https://www.cgsecurity.org

   P FAT12                    0   0  1    79   1 18       2880 [NO NAME]


Please choose if all space needs to be analysed:
>[   Free    ] Scan for files from FAT12 unallocated space only
 [   Whole   ] Extract files from whole partition

Finally, I selected a destination directory for the recovered files:

PhotoRec 7.2, Data Recovery Utility, February 2024

Please select a destination to save the recovered files to.
Do not choose to write the files to the same partition they were stored on.
Keys: Arrow keys to select another directory
      C when the destination is correct
      Q to quit
Directory /home/kali/Desktop/floppy/floppy_recovery
>drwxrwxr-x  1000  1000      4096  2-Dec-2025 23:51 .
 drwxrwxr-x  1000  1000      4096  2-Dec-2025 23:51 ..

The recovery process finished quickly, identifying a text file:

PhotoRec 7.2, Data Recovery Utility, February 2024
Christophe GRENIER <grenier@cgsecurity.org>
https://www.cgsecurity.org

Disk floppy.img - 1474 KB / 1440 KiB (RO)
     Partition                  Start        End    Size in sectors
   P FAT12                    0   0  1    79   1 18       2880 [NO NAME]


1 files saved in /home/kali/Desktop/floppy/floppy_recovery/recup_dir directory.
Recovery completed.

You are welcome to donate to support and encourage further development
https://www.cgsecurity.org/wiki/Donation

[ Quit ]

I inspected the output directory and found a file named f0000038.txt:

┌──(kali㉿mac-vikali)-[~/Desktop/floppy]
└─$ ls floppy_recovery/recup_dir.1/
f0000038.txt  report.xml

Opening the file, I recognized it as the source code for a BASIC program, specifically SUPER STARTREK:

1 REM original file superstartrek.bas dated 2/13/2009 from bcg.tar.gz
2 REM QBasic conversion by WTN...
3 REM 2/16/2021 - uncrunched, changed B9=2 to B9=0, added RANDOMIZE and SLEEP
4 REM incorporated instructions from superstartrekins.bas
5 REM 2/19/2021 - changed the code after DO YOU NEED INSTRUCTIONS?
10 REM SUPER STARTREK - MAY 16,1978 - REQUIRES 24K MEMORY
30 REM
40 REM ****        **** STAR TREK ****        ****
50 REM **** SIMULATION OF A MISSION OF THE STARSHIP ENTERPRISE,
60 REM **** AS SEEN ON THE STAR TREK TV SHOW.
70 REM **** ORIGIONAL PROGRAM BY MIKE MAYFIELD, MODIFIED VERSION
80 REM **** PUBLISHED IN DEC'S "101 BASIC GAMES", BY DAVE AHL.
90 REM **** MODIFICATIONS TO THE LATTER (PLUS DEBUGGING) BY BOB
100 REM *** LEEDOM - APRIL & DECEMBER 1974,
110 REM *** WITH A LITTLE HELP FROM HIS FRIENDS . . .
120 REM *** COMMENTS, EPITHETS, AND SUGGESTIONS SOLICITED --
130 REM *** SEND TO:  R. C. LEEDOM
140 REM ***           WESTINGHOUSE DEFENSE & ELECTRONICS SYSTEMS CNTR.
150 REM ***           BOX 746, M.S. 338
160 REM ***           BALTIMORE, MD  21203
170 REM ***
180 REM *** CONVERTED TO MICROSOFT 8 K BASIC 3/16/78 BY JOHN GORDERS
190 REM *** LINE NUMBERS FROM VERSION STREK7 OF 1/12/75 PRESERVED AS
200 REM *** MUCH AS POSSIBLE WHILE USING MULTIPLE STATEMENTS PER LINE
205 REM *** SOME LINES ARE LONGER THAN 72 CHARACTERS; THIS WAS DONE
210 REM *** BY USING "?" INSTEAD OF "PRINT" WHEN ENTERING LINES
211 REM bWVycnkgY2hyaXN0bWFzIHRvIGFsbCBhbmQgdG8gYWxsIGEgZ29vZCBuaWdodAo=
215 REM ***
219 GOSUB 20000:REM instructions
220 PRINT:PRINT:PRINT:PRINT:PRINT:PRINT:PRINT:PRINT:PRINT:PRINT:PRINT
221 PRINT"                                    ,------*------,"
222 PRINT"                    ,-------------   '---  ------'"
223 PRINT"                     '-------- --'      / /"
224 PRINT"                         ,---' '-------/ /--,"
225 PRINT"                          '----------------'":PRINT
226 PRINT"                    THE USS ENTERPRISE --- NCC-1701"
227 PRINT:PRINT:PRINT:PRINT:PRINT
250 RANDOMIZE(TIMER):SLEEP 3
260 REM CLEAR 600
270 Z$="                         "
330 DIM G(8,8),C(9,2),K(3,3),N(3),Z(8,8),D(8)
370 T=INT(RND(1)*20+20)*100:T0=T:T9=25+INT(RND(1)*10):D0=0:E=3000:E0=E
440 P=10:P0=P:S9=200:S=0:B9=0:K9=0:X$="":X0$=" IS "
470 DEF FND(D)=SQR((K(I,1)-S1)^2+(K(I,2)-S2)^2)
475 DEF FNR(R)=INT(RND(R)*7.98+1.01)
480 REM INITIALIZE ENTERPRIZE'S POSITION
490 Q1=FNR(1):Q2=FNR(1):S1=FNR(1):S2=FNR(1)
530 FOR I=1 TO 9:C(I,1)=0:C(I,2)=0:NEXT I
540 C(3,1)=-1:C(2,1)=-1:C(4,1)=-1:C(4,2)=-1:C(5,2)=-1:C(6,2)=-1
600 C(1,2)=1:C(2,2)=1:C(6,1)=1:C(7,1)=1:C(8,1)=1:C(8,2)=1:C(9,2)=1
670 FOR I=1 TO 8:D(I)=0:NEXT I
710 A1$="NAVSRSLRSPHATORSHEDAMCOMXXX"
810 REM SETUP WHAT EXHISTS IN GALAXY . . .
815 REM K3= # KLINGONS  B3= # STARBASES  S3 = # STARS
820 FOR I=1 TO 8:FOR J=1 TO 8:K3=0:Z(I,J)=0:R1=RND(1)
850 IF R1>.98 THEN K3=3:K9=K9+3:GOTO 980
860 IF R1>.95 THEN K3=2:K9=K9+2:GOTO 980
870 IF R1>.80 THEN K3=1:K9=K9+1
980 B3=0:IF RND(1)>.96 THEN B3=1:B9=B9+1
1040 G(I,J)=K3*100+B3*10+FNR(1):NEXT J:NEXT I:IF K9>T9 THEN T9=K9+1
1100 IF B9<>0 THEN 1200
1150 IF G(Q1,Q2)<200 THEN G(Q1,Q2)=G(Q1,Q2)+120:K9=K9+1
1160 B9=1:G(Q1,Q2)=G(Q1,Q2)+10:Q1=FNR(1):Q2=FNR(1)
1200 K7=K9:IF B9<>1 THEN X$="S":X0$=" ARE "
1230 PRINT"YOUR ORDERS ARE AS FOLLOWS:"
1240 PRINT"     DESTROY THE";K9;"KLINGON WARSHIPS WHICH HAVE INVADED"
1252 PRINT"   THE GALAXY BEFORE THEY CAN ATTACK FEDERATION HEADQUARTERS"
1260 PRINT"   ON STARDATE";T0+T9;"  THIS GIVES YOU";T9;"DAYS.  THERE";X0$
1272 PRINT"  ";B9;"STARBASE";X$;" IN THE GALAXY FOR RESUPPLYING YOUR SHIP"
1280 PRINT:REM PRINT"HIT ANY KEY EXCEPT RETURN WHEN READY TO ACCEPT COMMAND"
1300 I=RND(1):REM IF INP(1)=13 THEN 1300
1310 REM HERE ANY TIME NEW QUADRANT ENTERED
1320 Z4=Q1:Z5=Q2:K3=0:B3=0:S3=0:G5=0:D4=.5*RND(1):Z(Q1,Q2)=G(Q1,Q2)
1390 IF Q1<1 OR Q1>8 OR Q2<1 OR Q2>8 THEN 1600
1430 GOSUB 9030:PRINT:IF T0<>T THEN 1490
1460 PRINT"YOUR MISSION BEGINS WITH YOUR STARSHIP LOCATED"
1470 PRINT"IN THE GALACTIC QUADRANT, '";G2$;"'.":GOTO 1500
1490 PRINT"NOW ENTERING ";G2$;" QUADRANT . . ."
1500 PRINT:K3=INT(G(Q1,Q2)*.01):B3=INT(G(Q1,Q2)*.1)-10*K3
1540 S3=G(Q1,Q2)-100*K3-10*B3:IF K3=0 THEN 1590
1560 PRINT"COMBAT AREA      CONDITION RED":IF S>200 THEN 1590
1580 PRINT"   SHIELDS DANGEROUSLY LOW"
1590 FOR I=1 TO 3:K(I,1)=0:K(I,2)=0:NEXT I
1600 FOR I=1 TO 3:K(I,3)=0:NEXT I:Q$=Z$+Z$+Z$+Z$+Z$+Z$+Z$+LEFT$(Z$,17)
1660 REM POSITION ENTERPRISE IN QUADRANT, THEN PLACE "K3" KLINGONS, &
1670 REM "B3" STARBASES, & "S3" STARS ELSEWHERE.
1680 A$="<*>":Z1=S1:Z2=S2:GOSUB 8670:IF K3<1 THEN 1820
1720 FOR I=1 TO K3:GOSUB 8590:A$="+K+":Z1=R1:Z2=R2
1780 GOSUB 8670:K(I,1)=R1:K(I,2)=R2:K(I,3)=S9*(0.5+RND(1)):NEXT I
1820 IF B3<1 THEN 1910
1880 GOSUB 8590:A$=">!<":Z1=R1:B4=R1:Z2=R2:B5=R2:GOSUB 8670
1910 FOR I=1 TO S3:GOSUB 8590:A$=" * ":Z1=R1:Z2=R2:GOSUB 8670:NEXT I
1980 GOSUB 6430
1990 IF S+E>10 THEN IF E>10 OR D(7)=0 THEN 2060
2020 PRINT:PRINT"** FATAL ERROR **   YOU'VE JUST STRANDED YOUR SHIP IN "
2030 PRINT"SPACE":PRINT"YOU HAVE INSUFFICIENT MANEUVERING ENERGY,";
2040 PRINT" AND SHIELD CONTROL":PRINT"IS PRESENTLY INCAPABLE OF CROSS";
2050 PRINT"-CIRCUITING TO ENGINE ROOM!!":GOTO 6220
2060 INPUT"COMMAND";A$
2080 FOR I=1 TO 9:IF LEFT$(A$,3)<>MID$(A1$,3*I-2,3) THEN 2160
2140 ON I GOTO 2300,1980,4000,4260,4700,5530,5690,7290,6270
2160 NEXT I:PRINT"ENTER ONE OF THE FOLLOWING:"
2180 PRINT"  NAV  (TO SET COURSE)"
2190 PRINT"  SRS  (FOR SHORT RANGE SENSOR SCAN)"
2200 PRINT"  LRS  (FOR LONG RANGE SENSOR SCAN)"
2210 PRINT"  PHA  (TO FIRE PHASERS)"
2220 PRINT"  TOR  (TO FIRE PHOTON TORPEDOES)"
2230 PRINT"  SHE  (TO RAISE OR LOWER SHIELDS)"
2240 PRINT"  DAM  (FOR DAMAGE CONTROL REPORTS)"
2250 PRINT"  COM  (TO CALL ON LIBRARY-COMPUTER)"
2260 PRINT"  XXX  (TO RESIGN YOUR COMMAND)":PRINT:GOTO 1990
2290 REM COURSE CONTROL BEGINS HERE
2300 INPUT"COURSE (0-9)";C1:IF C1=9 THEN C1=1
2310 IF C1>=1 AND C1<9 THEN 2350
2330 PRINT"   LT. SULU REPORTS, 'INCORRECT COURSE DATA, SIR!'":GOTO 1990
2350 X$="8":IF D(1)<0 THEN X$="0.2"
2360 PRINT"WARP FACTOR (0-";X$;")";:INPUT W1:IF D(1)<0 AND W1>.2 THEN 2470
2380 IF W1>0 AND W1<=8 THEN 2490
2390 IF W1=0 THEN 1990
2420 PRINT"   CHIEF ENGINEER SCOTT REPORTS 'THE ENGINES WON'T TAKE";
2430 PRINT" WARP ";W1;"!'":GOTO 1990
2470 PRINT"WARP ENGINES ARE DAMAGED.  MAXIUM SPEED = WARP 0.2":GOTO 1990
2490 N=INT(W1*8+.5):IF E-N>=0 THEN 2590
2500 PRINT"ENGINEERING REPORTS   'INSUFFICIENT ENERGY AVAILABLE"
2510 PRINT"                       FOR MANEUVERING AT WARP";W1;"!'"
2530 IF S<N-E OR D(7)<0 THEN 1990
2550 PRINT"DEFLECTOR CONTROL ROOM ACKNOWLEDGES";S;"UNITS OF ENERGY"
2560 PRINT"                         PRESENTLY DEPLOYED TO SHIELDS."
2570 GOTO 1990
2580 REM KLINGONS MOVE/FIRE ON MOVING STARSHIP . . .
2590 FOR I=1 TO K3:IF K(I,3)=0 THEN 2700
2610 A$="   ":Z1=K(I,1):Z2=K(I,2):GOSUB 8670:GOSUB 8590
2660 K(I,1)=Z1:K(I,2)=Z2:A$="+K+":GOSUB 8670
2700 NEXT I:GOSUB 6000:D1=0:D6=W1:IF W1>=1 THEN D6=1
2770 FOR I=1 TO 8:IF D(I)>=0 THEN 2880
2790 D(I)=D(I)+D6:IF D(I)>-.1 AND D(I)<0 THEN D(I)=-.1:GOTO 2880
2800 IF D(I)<0 THEN 2880
2810 IF D1<>1 THEN D1=1:PRINT"DAMAGE CONTROL REPORT:  ";
2840 PRINT TAB(8);:R1=I:GOSUB 8790:PRINT G2$;" REPAIR COMPLETED."
2880 NEXT I:IF RND(1)>.2 THEN 3070
2910 R1=FNR(1):IF RND(1)>=.6 THEN 3000
2930 D(R1)=D(R1)-(RND(1)*5+1):PRINT"DAMAGE CONTROL REPORT:  ";
2960 GOSUB 8790:PRINT G2$;" DAMAGED":PRINT:GOTO 3070
3000 D(R1)=D(R1)+RND(1)*3+1:PRINT"DAMAGE CONTROL REPORT:  ";
3030 GOSUB 8790:PRINT G2$;" STATE OF REPAIR IMPROVED":PRINT
3060 REM BEGIN MOVING STARSHIP
3070 A$="   ":Z1=INT(S1):Z2=INT(S2):GOSUB 8670
3110 X1=C(C1,1)+(C(C1+1,1)-C(C1,1))*(C1-INT(C1)):X=S1:Y=S2
3140 X2=C(C1,2)+(C(C1+1,2)-C(C1,2))*(C1-INT(C1)):Q4=Q1:Q5=Q2
3170 FOR I=1 TO N:S1=S1+X1:S2=S2+X2:IF S1<1 OR S1>=9 OR S2<1 OR S2>=9 THEN 3500
3240 S8=INT(S1)*24+INT(S2)*3-26:IF MID$(Q$,S8,2)="  "THEN 3360
3320 S1=INT(S1-X1):S2=INT(S2-X2):PRINT"WARP ENGINES SHUT DOWN AT ";
3350 PRINT"SECTOR";S1;",";S2;"DUE TO BAD NAVAGATION":GOTO 3370
3360 NEXT I:S1=INT(S1):S2=INT(S2)
3370 A$="<*>":Z1=INT(S1):Z2=INT(S2):GOSUB 8670:GOSUB 3910:T8=1
3430 IF W1<1 THEN T8=.1*INT(10*W1)
3450 T=T+T8:IF T>T0+T9 THEN 6220
3470 REM SEE IF DOCKED, THEN GET COMMAND
3480 GOTO 1980
3490 REM EXCEEDED QUADRANT LIMITS
3500 X=8*Q1+X+N*X1:Y=8*Q2+Y+N*X2:Q1=INT(X/8):Q2=INT(Y/8):S1=INT(X-Q1*8)
3550 S2=INT(Y-Q2*8):IF S1=0 THEN Q1=Q1-1:S1=8
3590 IF S2=0 THEN Q2=Q2-1:S2=8
3620 X5=0:IF Q1<1 THEN X5=1:Q1=1:S1=1
3670 IF Q1>8 THEN X5=1:Q1=8:S1=8
3710 IF Q2<1 THEN X5=1:Q2=1:S2=1
3750 IF Q2>8 THEN X5=1:Q2=8:S2=8
3790 IF X5=0 THEN 3860
3800 PRINT"LT. UHURA REPORTS MESSAGE FROM STARFLEET COMMAND:"
3810 PRINT"  'PERMISSION TO ATTEMPT CROSSING OF GALACTIC PERIMETER"
3820 PRINT"  IS HEREBY *DENIED*.  SHUT DOWN YOUR ENGINES.'"
3830 PRINT"CHIEF ENGINEER SCOTT REPORTS  'WARP ENGINES SHUT DOWN"
3840 PRINT"  AT SECTOR";S1;",";S2;"OF QUADRANT";Q1;",";Q2;".'"
3850 IF T>T0+T9 THEN 6220
3860 IF 8*Q1+Q2=8*Q4+Q5 THEN 3370
3870 T=T+1:GOSUB 3910:GOTO 1320
3900 REM MANEUVER ENERGY S/R **
3910 E=E-N-10:IF E>=0 THEN RETURN
3930 PRINT"SHIELD CONTROL SUPPLIES ENERGY TO COMPLETE THE MANEUVER."
3940 S=S+E:E=0:IF S<=0 THEN S=0
3980 RETURN
3990 REM LONG RANGE SENSOR SCAN CODE
4000 IF D(3)<0 THEN PRINT"LONG RANGE SENSORS ARE INOPERABLE":GOTO 1990
4030 PRINT"LONG RANGE SCAN FOR QUADRANT";Q1;",";Q2
4040 O1$="-------------------":PRINT O1$
4060 FOR I=Q1-1 TO Q1+1:N(1)=-1:N(2)=-2:N(3)=-3:FOR J=Q2-1 TO Q2+1
4120 IF I>0 AND I<9 AND J>0 AND J<9 THEN N(J-Q2+2)=G(I,J):Z(I,J)=G(I,J)
4180 NEXT J:FOR L=1 TO 3:PRINT": ";:IF N(L)<0 THEN PRINT"*** ";:GOTO 4230
4210 PRINT RIGHT$(STR$(N(L)+1000),3);" ";
4230 NEXT L:PRINT":":PRINT O1$:NEXT I:GOTO 1990
4250 REM PHASER CONTROL CODE BEGINS HERE
4260 IF D(4)<0 THEN PRINT"PHASERS INOPERATIVE":GOTO 1990
4265 IF K3>0 THEN 4330
4270 PRINT"SCIENCE OFFICER SPOCK REPORTS  'SENSORS SHOW NO ENEMY SHIPS"
4280 PRINT"                                IN THIS QUADRANT'":GOTO 1990
4330 IF D(8)<0 THEN PRINT"COMPUTER FAILURE HAMPERS ACCURACY"
4350 PRINT"PHASERS LOCKED ON TARGET;  ";
4360 PRINT"ENERGY AVAILABLE =";E;"UNITS"
4370 INPUT"NUMBER OF UNITS TO FIRE";X:IF X<=0 THEN 1990
4400 IF E-X<0 THEN 4360
4410 E=E-X:IF D(7)<0 THEN X=X*RND(1)
4450 H1=INT(X/K3):FOR I=1 TO 3:IF K(I,3)<=0 THEN 4670
4480 H=INT((H1/FND(0))*(RND(1)+2)):IF H>.15*K(I,3) THEN 4530
4500 PRINT"SENSORS SHOW NO DAMAGE TO ENEMY AT ";K(I,1);",";K(I,2):GOTO 4670
4530 K(I,3)=K(I,3)-H:PRINT H;"UNIT HIT ON KLINGON AT SECTOR";K(I,1);",";
4550 PRINT K(I,2):IF K(I,3)<=0 THEN PRINT"*** KLINGON DESTROYED ***":GOTO 4580
4560 PRINT"   (SENSORS SHOW";K(I,3);"UNITS REMAINING)":GOTO 4670
4580 K3=K3-1:K9=K9-1:Z1=K(I,1):Z2=K(I,2):A$="   ":GOSUB 8670
4650 K(I,3)=0:G(Q1,Q2)=G(Q1,Q2)-100:Z(Q1,Q2)=G(Q1,Q2):IF K9<=0 THEN 6370
4670 NEXT I:GOSUB 6000:GOTO 1990
4690 REM PHOTON TORPEDO CODE BEGINS HERE
4700 IF P<=0 THEN PRINT"ALL PHOTON TORPEDOES EXPENDED":GOTO 1990
4730 IF D(5)<0 THEN PRINT"PHOTON TUBES ARE NOT OPERATIONAL":GOTO 1990
4760 INPUT"PHOTON TORPEDO COURSE (1-9)";C1:IF C1=9 THEN C1=1
4780 IF C1>=1 AND C1<9 THEN 4850
4790 PRINT"ENSIGN CHEKOV REPORTS,  'INCORRECT COURSE DATA, SIR!'"
4800 GOTO 1990
4850 X1=C(C1,1)+(C(C1+1,1)-C(C1,1))*(C1-INT(C1)):E=E-2:P=P-1
4860 X2=C(C1,2)+(C(C1+1,2)-C(C1,2))*(C1-INT(C1)):X=S1:Y=S2
4910 PRINT"TORPEDO TRACK:"
4920 X=X+X1:Y=Y+X2:X3=INT(X+.5):Y3=INT(Y+.5)
4960 IF X3<1 OR X3>8 OR Y3<1 OR Y3>8 THEN 5490
5000 PRINT"               ";X3;",";Y3:A$="   ":Z1=X:Z2=Y:GOSUB 8830
5050 IF Z3<>0 THEN 4920
5060 A$="+K+":Z1=X:Z2=Y:GOSUB 8830:IF Z3=0 THEN 5210
5110 PRINT"*** KLINGON DESTROYED ***":K3=K3-1:K9=K9-1:IF K9<=0 THEN 6370
5150 FOR I=1 TO 3:IF X3=K(I,1) AND Y3=K(I,2) THEN 5190
5180 NEXT I:I=3
5190 K(I,3)=0:GOTO 5430
5210 A$=" * ":Z1=X:Z2=Y:GOSUB 8830:IF Z3=0 THEN 5280
5260 PRINT"STAR AT";X3;",";Y3;"ABSORBED TORPEDO ENERGY.":GOSUB 6000:GOTO 1990
5280 A$=">!<":Z1=X:Z2=Y:GOSUB 8830:IF Z3=0 THEN 4760
5330 PRINT"*** STARBASE DESTROYED ***":B3=B3-1:B9=B9-1
5360 IF B9>0 OR K9>T-T0-T9 THEN 5400
5370 PRINT"THAT DOES IT, CAPTAIN!!  YOU ARE HEREBY RELIEVED OF COMMAND"
5380 PRINT"AND SENTENCED TO 99 STARDATES AT HARD LABOR ON CYGNUS 12!!"
5390 GOTO 6270
5400 PRINT"STARFLEET COMMAND REVIEWING YOUR RECORD TO CONSIDER"
5410 PRINT"COURT MARTIAL!":D0=0
5430 Z1=X:Z2=Y:A$="   ":GOSUB 8670
5470 G(Q1,Q2)=K3*100+B3*10+S3:Z(Q1,Q2)=G(Q1,Q2):GOSUB 6000:GOTO 1990
5490 PRINT"TORPEDO MISSED":GOSUB 6000:GOTO 1990
5520 REM SHIELD CONTROL
5530 IF D(7)<0 THEN PRINT"SHIELD CONTROL INOPERABLE":GOTO 1990
5560 PRINT"ENERGY AVAILABLE =";E+S;:INPUT"NUMBER OF UNITS TO SHIELDS";X
5580 IF X<0 OR S=X THEN PRINT"<SHIELDS UNCHANGED>":GOTO 1990
5590 IF X<=E+S THEN 5630
5600 PRINT"SHIELD CONTROL REPORTS  'THIS IS NOT THE FEDERATION TREASURY.'"
5610 PRINT"<SHIELDS UNCHANGED>":GOTO 1990
5630 E=E+S-X:S=X:PRINT"DEFLECTOR CONTROL ROOM REPORT:"
5660 PRINT"  'SHIELDS NOW AT";INT(S);"UNITS PER YOUR COMMAND.'":GOTO 1990
5680 REM DAMAGE CONTROL
5690 IF D(6)>=0 THEN 5910
5700 PRINT"DAMAGE CONTROL REPORT NOT AVAILABLE":IF D0=0 THEN 1990
5720 D3=0:FOR I=1 TO 8:IF D(I)<0 THEN D3=D3+.1
5760 NEXT I:IF D3=0 THEN 1990
5780 PRINT:D3=D3+D4:IF D3>=1 THEN D3=.9
5810 PRINT"TECHNICIANS STANDING BY TO EFFECT REPAIRS TO YOUR SHIP;"
5820 PRINT"ESTIMATED TIME TO REPAIR:";.01*INT(100*D3);"STARDATES"
5840 INPUT "WILL YOU AUTHORIZE THE REPAIR ORDER (Y/N)";A$
5860 IF A$<>"Y"THEN 1990
5870 FOR I=1 TO 8:IF D(I)<0 THEN D(I)=0
5890 NEXT I:T=T+D3+.1
5910 PRINT:PRINT"DEVICE             STATE OF REPAIR":FOR R1=1 TO 8
5920 GOSUB 8790:PRINT G2$;LEFT$(Z$,25-LEN(G2$));INT(D(R1)*100)*.01
5950 NEXT R1:PRINT:IF D0<>0 THEN 5720
5980 GOTO 1990
5990 REM KLINGONS SHOOTING
6000 IF K3<=0 THEN RETURN
6010 IF D0<>0 THEN PRINT"STARBASE SHIELDS PROTECT THE ENTERPRISE":RETURN
6040 FOR I=1 TO 3:IF K(I,3)<=0 THEN 6200
6060 H=INT((K(I,3)/FND(1))*(2+RND(1))):S=S-H:K(I,3)=K(I,3)/(3+RND(0))
6080 PRINT H;"UNIT HIT ON ENTERPRISE FROM SECTOR";K(I,1);",";K(I,2)
6090 IF S<=0 THEN 6240
6100 PRINT"      <SHIELDS DOWN TO";S;"UNITS>":IF H<20 THEN 6200
6120 IF RND(1)>.6 OR H/S<=.02 THEN 6200
6140 R1=FNR(1):D(R1)=D(R1)-H/S-.5*RND(1):GOSUB 8790
6170 PRINT"DAMAGE CONTROL REPORTS ";G2$;" DAMAGED BY THE HIT'"
6200 NEXT I:RETURN
6210 REM END OF GAME
6220 PRINT"IT IS STARDATE";T:GOTO 6270
6240 PRINT:PRINT"THE ENTERPRISE HAS BEEN DESTROYED.  THEN FEDERATION ";
6250 PRINT"WILL BE CONQUERED":GOTO 6220
6270 PRINT"THERE WERE";K9;"KLINGON BATTLE CRUISERS LEFT AT"
6280 PRINT"THE END OF YOUR MISSION."
6290 PRINT:PRINT:IF B9=0 THEN 6360
6310 PRINT"THE FEDERATION IS IN NEED OF A NEW STARSHIP COMMANDER"
6320 PRINT"FOR A SIMILAR MISSION -- IF THERE IS A VOLUNTEER,"
6330 INPUT"LET HIM STEP FORWARD AND ENTER 'AYE'";A$:IF A$="AYE" THEN 10
6360 END
6370 PRINT"CONGRULATION, CAPTAIN!  THEN LAST KLINGON BATTLE CRUISER"
6380 PRINT"MENACING THE FDERATION HAS BEEN DESTROYED.":PRINT
6400 PRINT"YOUR EFFICIENCY RATING IS";1000*(K7/(T-T0))^2:GOTO 6290
6420 REM SHORT RANGE SENSOR SCAN & STARTUP SUBROUTINE
6430 FOR I=S1-1 TO S1+1:FOR J=S2-1 TO S2+1
6450 IF INT(I+.5)<1 OR INT(I+.5)>8 OR INT(J+.5)<1 OR INT(J+.5)>8 THEN 6540
6490 A$=">!<":Z1=I:Z2=J:GOSUB 8830:IF Z3=1 THEN 6580
6540 NEXT J:NEXT I:D0=0:GOTO 6650
6580 D0=1:C$="DOCKED":E=E0:P=P0
6620 PRINT"SHIELDS DROPPED FOR DOCKING PURPOSES":S=0:GOTO 6720
6650 IF K3>0 THEN C$="*RED*":GOTO 6720
6660 C$="GREEN":IF E<E0*.1 THEN C$="YELLOW"
6720 IF D(2)>=0 THEN 6770
6730 PRINT:PRINT"*** SHORT RANGE SENSORS ARE OUT ***":PRINT:RETURN
6770 O1$="---------------------------------":PRINT O1$:FOR I=1 TO 8
6820 FOR J=(I-1)*24+1 TO (I-1)*24+22 STEP 3:PRINT" ";MID$(Q$,J,3);:NEXT J
6830 ON I GOTO 6850,6900,6960,7020,7070,7120,7180,7240
6850 PRINT"        STARDATE          ";INT(T*10)*.1:GOTO 7260
6900 PRINT"        CONDITION          ";C$:GOTO 7260
6960 PRINT"        QUADRANT          ";Q1;",";Q2:GOTO 7260
7020 PRINT"        SECTOR            ";S1;",";S2:GOTO 7260
7070 PRINT"        PHOTON TORPEDOES  ";INT(P):GOTO 7260
7120 PRINT"        TOTAL ENERGY      ";INT(E+S):GOTO 7260
7180 PRINT"        SHIELDS           ";INT(S):GOTO 7260
7240 PRINT"        KLINGONS REMAINING";INT(K9)
7260 NEXT I:PRINT O1$:RETURN
7280 REM LIBRARY COMPUTER CODE
7290 IF D(8)<0 THEN PRINT"COMPUTER DISABLED":GOTO 1990
7320 INPUT"COMPUTER ACTIVE AND AWAITING COMMAND";A:IF A<0 THEN 1990
7350 PRINT:H8=1:ON A+1 GOTO 7540,7900,8070,8500,8150,7400
7360 PRINT"FUNCTIONS AVAILABLE FROM LIBRARY-COMPUTER:"
7370 PRINT"   0 = CUMULATIVE GALACTIC RECORD"
7372 PRINT"   1 = STATUS REPORT"
7374 PRINT"   2 = PHOTON TORPEDO DATA"
7376 PRINT"   3 = STARBASE NAV DATA"
7378 PRINT"   4 = DIRECTION/DISTANCE CALCULATOR"
7380 PRINT"   5 = GALAXY 'REGION NAME' MAP":PRINT:GOTO 7320
7390 REM SETUP TO CHANGE CUM GAL RECORD TO GALAXY MAP
7400 H8=0:G5=1:PRINT"                        THE GALAXY":GOTO 7550
7530 REM CUM GALACTIC RECORD
7540 REM INPUT"DO YOU WANT A HARDCOPY? IS THE TTY ON (Y/N)";A$
7542 REM IFA$="Y"THENPOKE1229,2:POKE1237,3:NULL1
7543 PRINT:PRINT"        ";
7544 PRINT"COMPUTER RECORD OF GALAXY FOR QUADRANT";Q1;",";Q2
7546 PRINT
7550 PRINT"       1     2     3     4     5     6     7     8"
7560 O1$="     ----- ----- ----- ----- ----- ----- ----- -----"
7570 PRINT O1$:FOR I=1 TO 8:PRINT I;:IF H8=0 THEN 7740
7630 FOR J=1 TO 8:PRINT"   ";:IF Z(I,J)=0 THEN PRINT"***";:GOTO 7720
7700 PRINT RIGHT$(STR$(Z(I,J)+1000),3);
7720 NEXT J:GOTO 7850
7740 Z4=I:Z5=1:GOSUB 9030:J0=INT(15-.5*LEN(G2$)):PRINT TAB(J0);G2$;
7800 Z5=5:GOSUB 9030:J0=INT(39-.5*LEN(G2$)):PRINT TAB(J0);G2$;
7850 PRINT:PRINT O1$:NEXT I:PRINT:GOTO 1990
7890 REM STATUS REPORT
7900 PRINT "   STATUS REPORT:":X$="":IF K9>1 THEN X$="S"
7940 PRINT"KLINGON";X$;" LEFT: ";K9
7960 PRINT"MISSION MUST BE COMPLETED IN";.1*INT((T0+T9-T)*10);"STARDATES"
7970 X$="S":IF B9<2 THEN X$="":IF B9<1 THEN 8010
7980 PRINT"THE FEDERATION IS MAINTAINING";B9;"STARBASE";X$;" IN THE GALAXY"
7990 GOTO 5690
8010 PRINT"YOUR STUPIDITY HAS LEFT YOU ON YOUR ON IN"
8020 PRINT"  THE GALAXY -- YOU HAVE NO STARBASES LEFT!":GOTO 5690
8060 REM TORPEDO, BASE NAV, D/D CALCULATOR
8070 IF K3<=0 THEN 4270
8080 X$="":IF K3>1 THEN X$="S"
8090 PRINT"FROM ENTERPRISE TO KLINGON BATTLE CRUSER";X$
8100 H8=0:FOR I=1 TO 3:IF K(I,3)<=0 THEN 8480
8110 W1=K(I,1):X=K(I,2)
8120 C1=S1:A=S2:GOTO 8220
8150 PRINT"DIRECTION/DISTANCE CALCULATOR:"
8160 PRINT"YOU ARE AT QUADRANT ";Q1;",";Q2;" SECTOR ";S1;",";S2
8170 PRINT"PLEASE ENTER":INPUT"  INITIAL COORDINATES (X,Y)";C1,A
8200 INPUT"  FINAL COORDINATES (X,Y)";W1,X
8220 X=X-A:A=C1-W1:IF X<0 THEN 8350
8250 IF A<0 THEN 8410
8260 IF X>0 THEN 8280
8270 IF A=0 THEN C1=5:GOTO 8290
8280 C1=1
8290 IF ABS(A)<=ABS(X) THEN 8330
8310 PRINT"DIRECTION =";C1+(((ABS(A)-ABS(X))+ABS(A))/ABS(A)):GOTO 8460
8330 PRINT"DIRECTION =";C1+(ABS(A)/ABS(X)):GOTO 8460
8350 IF A>0 THEN C1=3:GOTO 8420
8360 IF X<>0 THEN C1=5:GOTO 8290
8410 C1=7
8420 IF ABS(A)>=ABS(X) THEN 8450
8430 PRINT"DIRECTION =";C1+(((ABS(X)-ABS(A))+ABS(X))/ABS(X)):GOTO 8460
8450 PRINT"DIRECTION =";C1+(ABS(X)/ABS(A))
8460 PRINT"DISTANCE =";SQR(X^2+A^2):IF H8=1 THEN 1990
8480 NEXT I:GOTO 1990
8500 IF B3<>0 THEN PRINT"FROM ENTERPRISE TO STARBASE:":W1=B4:X=B5:GOTO 8120
8510 PRINT"MR. SPOCK REPORTS,  'SENSORS SHOW NO STARBASES IN THIS";
8520 PRINT" QUADRANT.'":GOTO 1990
8580 REM FIND EMPTY PLACE IN QUADRANT (FOR THINGS)
8590 R1=FNR(1):R2=FNR(1):A$="   ":Z1=R1:Z2=R2:GOSUB 8830:IF Z3=0 THEN 8590
8600 RETURN
8660 REM INSERT IN STRING ARRAY FOR QUADRANT
8670 S8=INT(Z2-.5)*3+INT(Z1-.5)*24+1
8675 IF LEN(A$)<>3 THEN PRINT"ERROR":STOP
8680 IF S8=1 THEN Q$=A$+RIGHT$(Q$,189):RETURN
8690 IF S8=190 THEN Q$=LEFT$(Q$,189)+A$:RETURN
8700 Q$=LEFT$(Q$,S8-1)+A$+RIGHT$(Q$,190-S8):RETURN
8780 REM PRINTS DEVICE NAME
8790 ON R1 GOTO 8792,8794,8796,8798,8800,8802,8804,8806
8792 G2$="WARP ENGINES":RETURN
8794 G2$="SHORT RANGE SENSORS":RETURN
8796 G2$="LONG RANGE SENSORS":RETURN
8798 G2$="PHASER CONTROL":RETURN
8800 G2$="PHOTON TUBES":RETURN
8802 G2$="DAMAGE CONTROL":RETURN
8804 G2$="SHIELD CONTROL":RETURN
8806 G2$="LIBRARY-COMPUTER":RETURN
8820 REM STRING COMPARISON IN QUADRANT ARRAY
8830 Z1=INT(Z1+.5):Z2=INT(Z2+.5):S8=(Z2-1)*3+(Z1-1)*24+1:Z3=0
8890 IF MID$(Q$,S8,3)<>A$ THEN RETURN
8900 Z3=1:RETURN
9010 REM QUADRANT NAME IN G2$ FROM Z4,Z5 (=Q1,Q2)
9020 REM CALL WITH G5=1 TO GET REGION NAME ONLY
9030 IF Z5<=4 THEN ON Z4 GOTO 9040,9050,9060,9070,9080,9090,9100,9110
9035 GOTO 9120
9040 G2$="ANTARES":GOTO 9210
9050 G2$="RIGEL":GOTO 9210
9060 G2$="PROCYON":GOTO 9210
9070 G2$="VEGA":GOTO 9210
9080 G2$="CANOPUS":GOTO 9210
9090 G2$="ALTAIR":GOTO 9210
9100 G2$="SAGITTARIUS":GOTO 9210
9110 G2$="POLLUX":GOTO 9210
9120 ON Z4 GOTO 9130,9140,9150,9160,9170,9180,9190,9200
9130 G2$="SIRIUS":GOTO 9210
9140 G2$="DENEB":GOTO 9210
9150 G2$="CAPELLA":GOTO 9210
9160 G2$="BETELGEUSE":GOTO 9210
9170 G2$="ALDEBARAN":GOTO 9210
9180 G2$="REGULUS":GOTO 9210
9190 G2$="ARCTURUS":GOTO 9210
9200 G2$="SPICA"
9210 IF G5<>1 THEN ON Z5 GOTO 9230,9240,9250,9260,9230,9240,9250,9260
9220 RETURN
9230 G2$=G2$+" I":RETURN
9240 G2$=G2$+" II":RETURN
9250 G2$=G2$+" III":RETURN
9260 G2$=G2$+" IV":RETURN
20000 REM from superstartrekins.bas turned into subroutine
20010 REM INSTRUCTIONS FOR "SUPER STARTREK"  MAR 5, 1978
20020 FOR I=1 TO 12:PRINT:NEXT I
20021 PRINT TAB(10);"*************************************"
20022 PRINT TAB(10);"*                                   *"
20023 PRINT TAB(10);"*                                   *"
20030 PRINT TAB(10);"*      * * SUPER STAR TREK * *      *"
20031 PRINT TAB(10);"*                                   *"
20032 PRINT TAB(10);"*                                   *"
20035 PRINT TAB(10);"*************************************"
20036 FOR I=1 TO 8:PRINT:NEXT I
20040 INPUT " DO YOU NEED INSTRUCTIONS (Y/N)";K$:IF K$<>"Y" THEN 21210
20044 PRINT
20045 REM PRINT "TURN THE TTY ON-LINE AND HIT ANY KEY EXCEPT RETURN"
20046 REM IF INP(1)=13 THEN 46
20050 REM POKE 1229,2:POKE 1237,3:NULL 1
20090 PRINT"      INSTRUCTIONS FOR 'SUPER STAR TREK'"
20100 PRINT
20110 PRINT" 1. WHEN YOU SEE \COMMAND ?\ PRINTED, ENTER ONE OF THE LEGAL"
20120 PRINT"     COMMANDS (NAV,SRS,LRS,PHA,TOR,SHE,DAM,COM, OR XXX)."
20130 PRINT" 2. IF YOU SHOULD TYPE IN AN ILLEGAL COMMAND, YOU'LL GET A SHORT"
20140 PRINT"     LIST OF THE LEGAL COMMANDS PRINTED OUT."
20150 PRINT" 3. SOME COMMANDS REQUIRE YOU TO ENTER DATA (FOR EXAMPLE, THE"
20160 PRINT"     'NAV' COMMAND COMES BACK WITH 'COURSE (1-9) ?'.)  IF YOU"
20170 PRINT"     TYPE IN ILLEGAL DATA (LIKE NEGATIVE NUMBERS), THAN COMMAND"
20180 PRINT"     WILL BE ABORTED"
20190 PRINT
20270 PRINT"     THE GALAXY IS DIVIDED INTO AN 8 X 8 QUADRANT GRID,"
20280 PRINT" AND EACH QUADRANT IS FURTHER DIVIDED INTO AN 8 X 8 SECTOR GRID."
20290 PRINT
20300 PRINT"     YOU WILL BE ASSIGNED A STARTING POINT SOMEWHERE IN THE"
20310 PRINT" GALAXY TO BEGIN A TOUR OF DUTY AS COMANDER OF THE STARSHIP"
20320 PRINT" \ENTERPRISE\; YOUR MISSION: TO SEEK AND DESTROY THE FLEET OF"
20330 PRINT" KLINGON WARWHIPS WHICH ARE MENACING THE UNITED FEDERATION OF"
20340 PRINT" PLANETS."
20345 PRINT:PRINT:GOSUB 21200
20360 PRINT
20370 PRINT"     YOU HAVE THE FOLLOWING COMMANDS AVAILABLE TO YOU AS CAPTAIN"
20380 PRINT" OF THE STARSHIP ENTERPRISE:"
20385 PRINT
20390 PRINT" \NAV\ COMMAND = WARP ENGINE CONTROL --"
20400 PRINT"     COURSE IS IN A CIRCULAR NUMERICAL      4  3  2"
20410 PRINT"     VECTOR ARRANGEMENT AS SHOWN             . . ."
20420 PRINT"     INTEGER AND REAL VALUES MAY BE           ..."
20430 PRINT"     USED.  (THUS COURSE 1.5 IS HALF-     5 ---*--- 1"
20440 PRINT"     WAY BETWEEN 1 AND 2                      ..."
20450 PRINT"                                             . . ."
20460 PRINT"     VALUES MAY APPROACH 9.0, WHICH         6  7  8"
20470 PRINT"     ITSELF IS EQUIVALENT TO 1.0"         
20480 PRINT"                                            COURSE"
20490 PRINT"     ONE WARP FACTOR IS THE SIZE OF "
20500 PRINT"     ONE QUADTANT.  THEREFORE, TO GET"
20510 PRINT"     FROM QUADRANT 6,5 TO 5,5, YOU WOULD"
20520 PRINT"     USE COURSE 3, WARP FACTOR 1."
20530 PRINT
20535 PRINT:PRINT:PRINT:GOSUB 21200
20540 PRINT" \SRS\ COMMAND = SHORT RANGE SENSOR SCAN"
20550 PRINT"     SHOWS YOU A SCAN OF YOUR PRESENT QUADRANT."
20555 PRINT
20560 PRINT"     SYMBOLOGY ON YOUR SENSOR SCREEN IS AS FOLLOWS:"
20570 PRINT"        <*> = YOUR STARSHIP'S POSITION"
20580 PRINT"        +K+ = KLINGON BATTLE CRUISER"
20590 PRINT"        >!< = FEDERATION STARBASE (REFUEL/REPAIR/RE-ARM HERE!)"
20600 PRINT"         *  = STAR"
20605 PRINT
20610 PRINT"     A CONDENSED 'STATUS REPORT' WILL ALSO BE PRESENTED."
20620 PRINT
20640 PRINT" \LRS\ COMMAND = LONG RANGE SENSOR SCAN"
20650 PRINT"     SHOWS CONDITIONS IN SPACE FOR ONE QUADRANT ON EACH SIDE"
20660 PRINT"     OF THE ENTERPRISE (WHICH IS IN THE MIDDLE OF THE SCAN)"
20670 PRINT"     THE SCAN IS CODED IN THE FORM \###\, WHERE TH UNITS DIGIT"
20680 PRINT"     IS THE NUMBER OF STARS, THE TENS DIGIT IS THE NUMBER OF"
20690 PRINT"     STARBASES, AND THE HUNDRESDS DIGIT IS THE NUMBER OF"
20700 PRINT"     KLINGONS."
20705 PRINT
20706 PRINT"     EXAMPLE - 207 = 2 KLINGONS, NO STARBASES, & 7 STARS."
20710 PRINT
20715 GOSUB 21200
20720 PRINT" \PHA\ COMMAND = PHASER CONTROL."
20730 PRINT"     ALLOWS YOU TO DESTROY THE KLINGON BATTLE CRUISERS BY "
20740 PRINT"     ZAPPING THEM WITH SUITABLY LARGE UNITS OF ENERGY TO"
20750 PRINT"     DEPLETE THEIR SHIELD POWER.  (REMBER, KLINGONS HAVE"
20760 PRINT"     PHASERS TOO!)"
20770 PRINT
20780 PRINT" \TOR\ COMMAND = PHOTON TORPEDO CONTROL"
20790 PRINT"     TORPEDO COURSE IS THE SAME AS USED IN WARP ENGINE CONTROL"
20800 PRINT"     IF YOU HIT THE KLINGON VESSEL, HE IS DESTROYED AND"
20810 PRINT"     CANNOT FIRE BACK AT YOU.  IF YOU MISS, YOU ARE SUBJECT TO"
20820 PRINT"     HIS PHASER FIRE.  IN EITHER CASE, YOU ARE ALSO SUBJECT TO "
20825 PRINT"     THE PHASER FIRE OF ALL OTHER KLINGONS IN THE QUADRANT."
20830 PRINT
20835 PRINT"     THE LIBRARY-COMPUTER (\COM\ COMMAND) HAS AN OPTION TO "
20840 PRINT"     COMPUTE TORPEDO TRAJECTORY FOR YOU (OPTION 2)"
20850 PRINT
20855 PRINT:PRINT:PRINT:PRINT:PRINT:GOSUB 21200
20860 PRINT" \SHE\ COMMAND = SHIELD CONTROL"
20870 PRINT"     DEFINES THE NUMBER OF ENERGY UNITS TO BE ASSIGNED TO THE"
20880 PRINT"     SHIELDS.  ENERGY IS TAKEN FROM TOTAL SHIP'S ENERGY.  NOTE"
20890 PRINT"     THAN THE STATUS DISPLAY TOTAL ENERGY INCLUDES SHIELD ENERGY"
20900 PRINT
20910 PRINT" \DAM\ COMMAND = DAMMAGE CONTROL REPORT"
20920 PRINT"     GIVES THE STATE OF REPAIR OF ALL DEVICES.  WHERE A NEGATIVE"
20930 PRINT"     'STATE OF REPAIR' SHOWS THAT THE DEVICE IS TEMPORARILY"
20940 PRINT"     DAMAGED."
20950 PRINT
20955 FOR I=1 TO 11:PRINT:NEXT I:GOSUB 21200
20960 PRINT" \COM\ COMMAND = LIBRARY-COMPUTER"
20970 PRINT"     THE LIBRARY-COMPUTER CONTAINS SIX OPTIONS:"
20980 PRINT"     OPTION 0 = CUMULATIVE GALACTIC RECORD"
20990 PRINT"        THIS OPTION SHOWES COMPUTER MEMORY OF THE RESULTS OF ALL"
21000 PRINT"        PREVIOUS SHORT AND LONG RANGE SENSOR SCANS"
21010 PRINT"     OPTION 1 = STATUS REPORT"
21020 PRINT"        THIS OPTION SHOWS THE NUMBER OF KLINGONS, STARDATES,"
21030 PRINT"        AND STARBASES REMAINING IN THE GAME."
21040 PRINT"     OPTION 2 = PHOTON TORPEDO DATA"
21050 PRINT"        WHICH GIVES DIRECTIONS AND DISTANCE FROM THE ENTERPRISE"
21060 PRINT"        TO ALL KLINGONS IN YOUR QUADRANT"
21070 PRINT"     OPTION 3 = STARBASE NAV DATA"
21080 PRINT"        THIS OPTION GIVES DIRECTION AND DISTANCE TO ANY "
21090 PRINT"        STARBASE WITHIN YOUR QUADRANT"
21100 PRINT"     OPTION 4 = DIRECTION/DISTANCE CALCULATOR"
21110 PRINT"        THIS OPTION ALLOWS YOU TO ENTER COORDINATES FOR"
21120 PRINT"        DIRECTION/DISTANCE CALCULATIONS"
21130 PRINT"     OPTION 5 = GALACTIC /REGION NAME/ MAP"
21140 PRINT"        THIS OPTION PRINTS THE NAMES OF THE SIXTEEN MAJOR "
21150 PRINT"        GALACTIC REGIONS REFERRED TO IN THE GAME."
21155 PRINT
21200 PRINT:PRINT" PRESS A KEY TO CONTINUE ";:SLEEP 500:A$=INKEY$:PRINT:PRINT
21210 RETURN
21990 REM POKE 1229,0:POKE 1237,1:NULL 0
22000 REM PRINT:PRINT:PRINT
22010 REM PRINT "TURN CASSETTE PLAYER ON AND HIT ANY KEY EXCEPT RETURN"
22020 REM IF INP(1)=13 THEN 2020
22030 REM PRINT
22040 REM PRINT "TURN CASSETTE PLAYER OFF AND "
22050 REM PRINT "TYPE 'RUN' WHEN COMPUTER PRINTS 'OK'"

Scanning through the REM (comment) lines, line 211 stood out as it contained a base64 encoded string instead of readable text:

┌──(kali㉿mac-vikali)-[~/Desktop/floppy]
└─$ cat floppy_recovery/recup_dir.1/f0000038.txt | head -n 27 | tail -n1   
211 REM bWVycnkgY2hyaXN0bWFzIHRvIGFsbCBhbmQgdG8gYWxsIGEgZ29vZCBuaWdodAo=

I then decoded the string:

┌──(kali㉿mac-vikali)-[~/Desktop/floppy]
└─$ echo "bWVycnkgY2hyaXN0bWFzIHRvIGFsbCBhbmQgdG8gYWxsIGEgZ29vZCBuaWdodAo=" | base64 -d    
merry christmas to all and to all a good night

The decoded text revealed the flag: merry christmas to all and to all a good night.

Dissecting the attack

graph TD
    subgraph Forensics [1. Digital Forensics]
        A["Disk Image Analysis
        (TestDisk / PhotoRec)"]
        B["Data Recovery
        (Carve Deleted Files)"]
    end

    subgraph Analysis [2. Code Analysis]
        C["Source Code Review
        (Inspect BASIC REM Comments)"]
        D["Encoding Identification
        (Base64 String Detected)"]
    end

    subgraph Extraction [3. Data Exfiltration]
        E["Decoding
        (Base64 to Plaintext)"]
        F["Flag Recovery
        (Reveal Hidden Message)"]
    end

    %% Flow Connections
    A -->|Mount floppy.img| B
    B -->|Recover f0000038.txt| C
    C -->|Find Line 211| D
    D -->|Decode String| E
    E -->|Output| F

    %% Styling
    style A fill:#7f1d1d,stroke:#ef4444,stroke-width:2px,color:#fff
    style B fill:#7f1d1d,stroke:#ef4444,stroke-width:2px,color:#fff
    style C fill:#9a3412,stroke:#f97316,stroke-width:2px,color:#fff
    style D fill:#9a3412,stroke:#f97316,stroke-width:2px,color:#fff
    style E fill:#7f1d1d,stroke:#ef4444,stroke-width:2px,color:#fff
    style F fill:#7f1d1d,stroke:#ef4444,stroke-width:2px,color:#fff

Phase	Vulnerability (CWE)	Mitigation
1. Recovery	CWE-226 Sensitive Information in Resource Not Removed Before Reuse (Data Remanence)	Secure Deletion (Disk Wiping / Overwriting)
2. Analysis	CWE-312 Cleartext Storage of Sensitive Information (Base64 Encoded Secret)	Obfuscation/Encryption (Remove Secrets / Encrypt)

Fixing the Data Remanence (CWE-226)

Vulnerability: The sensitive file (f0000038.txt) was “deleted” from the filesystem, but the actual data blocks remained on the disk (floppy.img). Standard deletion only removes the pointer to the file, making it trivial to recover using forensic tools like testdisk.
Fix: Use Secure Deletion methods that overwrite the data blocks with zeros or random patterns, rather than just unlinking the file.
Vulnerable Operation:

# FLAW: Standard delete only removes the directory entry
rm secret_source.bas

Secure Operation:

# FIX: Overwrite the file content before unlinking
shred -u -z secret_source.bas

Impact: Prevents forensic recovery of the file content. If the file had been securely wiped, testdisk would have recovered only an empty file or random noise.

Fixing the Weak Obfuscation (CWE-312)

Vulnerability: The secret flag was hidden inside a comment line (211 REM) using Base64 encoding. Base64 is an encoding scheme, not encryption, and provides no confidentiality. Anyone who can read the source code can trivially decode the secret.
Fix: Do not store secrets in source code comments. If a secret must be included (e.g., for a game mechanic), use a one-way hash if it’s for verification, or proper encryption if retrieval is necessary.
Vulnerable Code (BASIC):

211 REM bWVycnkgY2hyaXN0bWFzIHRvIGF... (Base64 Encoded Flag)

Secure Code:

211 REM (No secrets in comments)
300 IF INPUT_HASH$ <> "5e884898da28047151d0e56f8dc6292773603d0d6aabbdd62a11ef721d1542d8" THEN PRINT "WRONG"

Impact: Eliminates the exposure of the plaintext flag within the codebase. An attacker analyzing the code would see no sensitive data in the comments.

Funsies

Wanna play it?

It’s available on ClassicReload at the link https://classicreload.com/play/super-star-trek.html