path: root/taipan-applesoft-annotated.txt

# annotated applesoft source for apple II taipan.
# this code isn't executable, due to having these comments
# interspersed. rather, it's meant to be human-readable.

# I'm no expert on the Apple II, and I'm more interested in the game
# logic than I am the lower level details (e.g.  graphics, sound), so
# the annotation isn't going to be 100% detailed. Also, anywhere you see
# a CALL or USR, that's a call to a machine language subroutine. Means
# that this BASIC code isn't the complete game. And I haven't tried to
# disassemble the ML routines, though I at least know what some of them
# are for.

# variable names are all one or two characters.
# not all of them are listed here (yet?), only "major" ones.

# CA - cash on hand
# BA - amount in bank
# DW - debt
# W - used as input for printing "fancy" numbers
# WW$ - "fancy" number output (e.g. "1.2 Million")
# IV$ - const, character that turns on inverse video
# NV$ - const, character that turns off inverse video
# CH$ - choices (see line 100)
# CH% - index into CH$ (see line 100)
# T - const, 300, used for timed input loops
# T$ - const, the string "Taipan", used in prompts
# LO$ - const, array, the names of the ports (and "At sea")
# LO - current location (port), index into LO$
# D - destination (port). LO is set to this at the end of the turn.
# DM - ship damage. ranges from 0 to SC.
# SC - ship capacity (hold + guns * 10)
# MW - hold (free space, not adjusted for guns)
# GN - guns
# H$ - firm name. probably so named because of the trs-80 version
#      which used the word "Hong" to mean "Firm".
# ED - "extra damage", starts at 0.5, increments by 0.5
       every game-year.
# EC - used to calculate enemy ship hitpoints. increases by 10 every year.
# YE - current game-year, starts at 1860
# MO - current game-month, ranges 1 to 12
# R1% - true if player entered "A" for "All" at a number prompt
# ST$ - const, array, ship status names (Poor, Fair, Prime, etc)
# BP% - base prices at each port. Increased at end-of-year (inflation).
#       2d array, indices are (location, item)

# FN R(X) is a function that returns a random integer
# from 0 to X-1.

10  CLEAR:
    WK$ = "*":
    CH$ = "*":
    CH% = 0:
    WU% = 0:
    R1% = 0:
    I = 0:
    J = 0:
    K = 0:
    II = 0:
    IJ = 0:
    IK = 0:
    T = 300:
    LT =  LOG (10):
    T$ = "Taipan":
    GOTO 10000

# timed keyboard input. the for loops abort when a key
# is pressed. Note that this "function" is actually
# entered at 3 different places (lines 92, 94, 96)
# for 3 different lengths of delay.
# {
92  FOR II = 1 TO T:
      II = II + ( PEEK ( -16384) > 127) * 9999:
    NEXT II

94  FOR II = 1 TO T / 2:
      II = II + ( PEEK ( -16384) > 127) * 9999:
    NEXT II

96  FOR II = 1 TO T / 2:
      II = II + ( PEEK ( -16384) > 127) * 9999:
    NEXT II

# ack the keystroke
98  POKE -16368,0:
    RETURN 
# }

# gets one character of input, restricted to the set defined
# by CH$, and sets CH% to the index into CH$. E.g. CH$="YN":
# GOSUB 100 will set CH% to 1 for Y or 2 for N.
# {
100  CALL 2560:
     RETURN 
# }

# numeric input. R1% set if A for All, otherwise amount
# is in W.
# {
150 WK$ = "" + "         ":
    CALL 2680:
    W = VAL(WK$):
    R1% = LEFT$(WK$,1) = "A":
    RETURN 
# }

# 200 is entry point for printing the static part of
# the port status screen.
# don't yet know what the USR and ampersand vectors are
# being used for here.
# {
200  REM

210  PRINT FS$;HM$;CS$; SPC( 12 - LEN (H$) / 2):
     PRINT "Firm: ";CA$;H$;CS$;", ";:
     X =  USR (1):
     PRINT

220  VTAB 2:
     PRINT CG$;"[";:
     & 45,26:
     PRINT "]":
     FOR II = 1 TO 5:
       PRINT "!"; TAB( 28);"!":
     NEXT II:
     PRINT "(";: & 61,26:
     PRINT ")":
     FOR II = 1 TO 5:
       PRINT "!"; TAB( 28);"!":
     NEXT II:
     PRINT "<";:
     & 58,26:
     PRINT ">";CS$
    
230  VTAB 3:
     HTAB 2:X =  USR (1) +  USR (2):
     VTAB 4:
     HTAB 21:
     PRINT "In use:":
     VTAB 6:
     HTAB 21:
     PRINT "Vacant:":
     VTAB 9:
     HTAB 2:
     PRINT "Hold        Guns";

240  FOR II = 3 TO 9 STEP 6:
       FOR IJ = 1 TO 4:
         VTAB II + IJ:
         HTAB 5:
         PRINT  LEFT$ (CO$(IJ),7);:
     NEXT IJ,II

250  VTAB 3:
     HTAB 33:
     PRINT "Date":
     VTAB 6:
     HTAB 31:
     X =  USR(3):
     VTAB 9:
     HTAB 33:
     PRINT "Debt":
     VTAB 12:
     HTAB 29:
     PRINT " Ship status"

260  VTAB 16:
     HTAB 1:
     PRINT CG$;:
     & 45,40:
     PRINT CS$

270  RETURN 
# }

# 300 is the entry point for printing the dynamic part of
# the status screen
# {
300  REM 
310  VTAB 4:
 HTAB 30:
 PRINT "15 ";YE:
 VTAB 4:
 HTAB 33:
 PRINT IV$; MID$ ("JanFebMarAprMayJunJulAugSepOctNovDec",(MO - 1) * 3 + 1,3);NV$

311  VTAB 7:
     HTAB 31:
     PRINT "   ":
     VTAB 7:
     HTAB 35 -  LEN (LO$(LO)) / 2 + .5:
     PRINT IV $;LO$(LO);NV$

312  VTAB 10:
     HTAB 29:
     PRINT "  ":
     VTAB 10:
     WW = DW:
     GOSUB 600:
     HTAB 35 -  LEN(WW$) / 2:
     PRINT IV$;WW$;NV$
    
# calculate ship status (percentage)
313 WW = 100 -  INT (DM / SC * 100 + .5):
    WW = WW * (WW > 0):
    W =  INT (WW / 20):
    VTAB 13:
    HTAB 30:
    IF W < 2 THEN  PRINT IV$;

314  PRINT ST$(W);":";WW;:
     IF PEEK(36) > 30 THEN
       PRINT  TAB(40);" ";

315  PRINT NV$;

316  VTAB 5:
     HTAB 22:
     PRINT "   ";:
     HTAB 22:
     PRINT WS:
     VTAB 7:
     HTAB 22:
     PRINT "     ";:
     HTAB 22:
     PRINT WC - WS

320  POKE 32,12:
     FOR II = 1 TO 2:
       POKE 33,(II - 1) * 9 + 6:IK = II * 6 - 3:
       POKE 34,IK:
       POKE 35,IK + 4:
       PRINT HM$:
       FOR IJ = 1 TO 4:
         VTAB IK + IJ:
         HTAB 1:
         PRINT ST(II,IJ);:
     NEXT IJ,II

330  PRINT FS$:
     VTAB 15:
     HTAB 1:
     WW = CA:
     GOSUB 600:
     PRINT "Cash: ";WW$; TAB( 21);:
     WW = BA:
     GOSUB 600:
     PRINT "Bank: ";WW$; TAB( 40);" ":
     VTAB 9:
     HTAB 22:
     PRINT GN;:
     HTAB 7:
     PRINT "        ";:
     HTAB 7

340  IF MW < 0 THEN
       PRINT IV$;"Overload";NV$

350  IF MW >  = 0 THEN
       PRINT MW;

360  RETURN 
# }

# 400 prints a prompt of some kind. HM$ is ASCII code 16,
# not sure what that does on the A2.
# {
400  REM 

# {
410  POKE 32,0:
     POKE 33,40:
     POKE 34,18:
     POKE 35,24:
     PRINT HM$;:
     RETURN 
# }

# {
480  VTAB 17:
     HTAB 1:
     X =  USR (4):
     RETURN 
# }

490  VTAB 17:
     HTAB 1:
     X =  USR (5):
     RETURN 
# }

# 500 seems to be for bank deposit
# {
500  REM 

510  GOSUB 400:
     X =  USR (6):
     GOSUB 150:
     IF R1% THEN
       W = CA

530  IF CA >  = W THEN
       CA = CA - W:
       BA = BA + W:
       GOSUB 300:
       GOTO 550

540  PRINT :
     PRINT :
     PRINT T$;:
     X =  USR (8):
     PRINT CA:
     PRINT "in cash.":
     CALL 2518:
     GOSUB 94:
     GOTO 510

# 550 is bank withdrawal (?)
550  GOSUB 400:
     X =  USR (7):
     GOSUB 150:
     IF R1% THEN
       W = BA

570  IF BA >  = W THEN
       BA = BA - W:
       CA = CA + W:
       GOSUB 300:
       GOTO 590

580  PRINT :
     PRINT :
     PRINT T$;:
     X =  USR (8):
     PRINT BA:
     PRINT "in the bank.":
     CALL 2518:
     GOSUB 94:
     GOTO 550

590  RETURN 
# }

# fancy_numbers
# {
600  IF WW < 1E6 THEN
       WW$ =  STR$( INT (WW)):
       RETURN 

610 II =  INT ( LOG (WW) / LT):
    IJ =  INT (II / 3) * 3:
    IK = 10 ^ (II - 2):
    WW$ =  LEFT$ ( STR$( INT (WW / IK + .5) * IK / 10 ^ IJ),4) + " "

620  IF IJ = 3 THEN
       W$ = "Thousand"

630  IF IJ = 6 THEN
       W$ = "Million"

640  IF IJ = 9 THEN
       W$ = "Billion"

650  IF IJ = 12 THEN
       W$ = "Trillion"

680 WW$ = WW$ + W$

690  RETURN 
# }

# This is the main loop of the game.
1000  REM

# bank and debt interest
1010  IF D <> 0 THEN
        GOSUB 490:
        GOSUB 400:
        X =  USR (9):
        PRINT LO$(D):
        GOSUB 96:
        BA =  INT (BA + BA * .005):
        DW =  INT (DW + DW * .1):
        TI = TI + 1:
        MO = MO + 1:
        LO = D

# end-of-year
1020  IF MO > 12 THEN
        YE = YE + 1:
        MO = 1:
        EC = EC + 10:
        ED = ED + .5:
        FOR I = 1 TO 7:
           FOR J = 1 TO 4:
              BP%(I,J) = BP%(I,J) +  FN R(2):
        NEXT J,I

# decide whether to do li's extortion
1030  GOSUB 400:
      GOSUB 480:
      GOSUB 300:
      IF LO <> 1 THEN 1500

# don't do it if the player's broke
1040  IF LI <> 0 OR CA = 0 THEN 1120

1050 WW = 0:
     W = 1.8:
     IF TI > 12 THEN
       WW =  FN R(1000 * TI) + 1000 * TI:
       W = 1

# "will you pay?"
1060 I =  FN R(CA / W) + WW:
     WW = I:
     GOSUB 600:
     GOSUB 400:
     X = USR (10):
     PRINT WW$;" ";:
     X = USR (11):
     CH$ = "NY":
     GOSUB 100:
     IF CH% <> 2 THEN 1120
    
# yes, deduct cash and offer a loan if there's not enough
1065 LI = 1:
     CA = CA - I:
     IF CA > 0 THEN 1100

# want wu to make up the difference?
1070  GOSUB 400:
      PRINT T$;:
      X =  USR (12):
      CALL 2512:
      PRINT :
      PRINT :
      X =  USR (13):
      CH$ = "YN":
      GOSUB 100

# yes
1080  IF CH% = 1 THEN
      DW = DW - CA:
      CA = 0:
      GOSUB 400:
      X =  USR (14):
      CALL 2521:
      GOSUB 94

# no
1090  IF CH% = 2 THEN CA = 0:
      LI = 0:
      GOSUB 400:
      X =  USR (15):
      PRINT T$;".":
      CALL 2518:
      GOSUB 94

1100  GOSUB 300

1120  IF DM = 0 THEN 1210

# mchenry
1130  GOSUB 400:
      PRINT T$;:
      X =  USR (16):
      CH$ = "YN":
      GOSUB 100:
      IF CH% = 2 THEN 1210

1140 BR =  INT (( FN R(60 * (TI + 3) / 4) + 25 * (TI + 3) / 4) * SC / 50)

1142 WW =  INT (DM / SC * 100 + .5)

1145  GOSUB 400:
      X =  USR (17):
      PRINT WW;"% damaged.":
      PRINT :
      WW = BR * DM + 1:
      GOSUB 600:
      X =  USR (18):
      PRINT WW$;","

1150 X =  USR (19):
     GOSUB 150:
     IF R1% = 1 THEN
       W = BR * DM + 1:
       IF CA < W THEN
         W = CA

1155 IF CA < W THEN
        GOSUB 400:
        PRINT T$;:
        X =  USR (12):
        GOSUB 96:
        GOTO 1142

1160 WW =  INT (W / BR + .5):
     DM = DM - WW:
     CA = CA - W:
     DM =  INT (DM * (DM > 0)):
     GOSUB 300:
     GOSUB 400

1210 IF DW < 10000 OR WN OR D = 0 THEN 1300

# wu's warning
1220  GOSUB 400:
      PRINT "Elder Brother Wu has sent "; FN R(100) + 50;" braves":
      PRINT "to escort you to the Wu mansion, ";T$;".":
      WN = 1:
      GOSUB 94

1230  GOSUB 400:
      X =  USR (20):
      GOSUB 92

1240  GOSUB 400:
      X =  USR (21):
      PRINT T$;".";:
      GOSUB 92

1300  REM 

# do you have business with wu?
1310  GOSUB 400:
      X =  USR (22):
      CH$ = "NY":
      WU% = 1:
      GOSUB 100:
      WU% = 0:
      IF CH% <> 2 THEN 1500

# check for player being out of money/guns/cargo
1320 W = 0:
     FOR I = 1 TO 2:
       FOR J = 1 TO 4:
         W = W + ST(I,J):
     NEXT J,I:
     IF CA OR BA OR W OR GN THEN 1360

1330 BL% = BL% + 1:
     I =  INT ( FN R(1500) + 500):
     J =  FN R(2000) * BL% + 1500:
     GOSUB 400:
     PRINT "Elder Brother is aware of your plight,  ";T$;
       ".  He is willing to loan you an   additional ";I;
       " if you will pay back"

1340  PRINT J;". Are you willing, ";T$;"? ";:
      CH$ = "YN":
      GOSUB 100:
      IF CH% = 2 THEN
        GOSUB 400:
        PRINT :
        PRINT "Very well, Taipan, the game is over!":
        CALL 2512:
        GOTO 2698

1350 CA = CA + I:
     DW = DW + J:
     GOSUB 400:
     PRINT "Very well, ";T$;".  Good joss!!":
     CALL 2521:
     GOSUB 300:
     GOSUB 96:
     GOTO 1500

1360  IF DW = 0 OR CA = 0 THEN 1400

1370  GOSUB 400:
      X =  USR (23):
      GOSUB 150:
      IF R1% THEN
        W = CA:
        IF CA > DW THEN
          W = DW

1380  IF CA >= W THEN
        CA = CA - W:
        DW = DW - W:
        GOSUB 300: GOTO 1400

1390  PRINT :
      PRINT :
      PRINT T$;", you have only ";CA:
      PRINT "in cash.":
      CALL 2518:
      GOSUB 94:
      GOTO 1370

1400  GOSUB 400:
      X =  USR (24):
      GOSUB 150:
      IF R1% THEN
        W = 2 * CA

1420  IF CA * 2 >= W THEN
        CA = CA + W:
        DW = DW + W:
        GOSUB 300:
        GOTO 1450

1430  PRINT :
      PRINT :
      PRINT "He won't loan you so much, ";T$;"!":
      CALL 2518:
      GOSUB 94:
      GOTO 1400

1450  REM 

1460  IF DW > 20000 AND  NOT ( FN R(5)) THEN
        GOSUB 400:
        PRINT "Bad joss!!":
        PRINT  FN R(3) + 1;" of your bodyguards have been killed":
        PRINT "by cutthroats and you have been robbed  of all your cash, ";T$;"!!":
        CALL 2512:
        CA = 0:
        GOSUB 300:
        GOSUB 94

# offer ship upgrade
1500  REM 

1610 I =  INT (1000 +  FN R(1000 * (TI + 5) / 6)) * ( INT (SC / 50) * (DM > 0) + 1):
     IF CA < I OR  FN R(4) THEN 1700
    
1615 W$ =  CHR$ (15) +  CHR$ (15) + "damaged_______" +
       CHR$ (15) + CHR$ (16) + "fine":
     WW = I:
     GOSUB 600

1620  GOSUB 400:
      PRINT "Do you wish to trade in your "; MID$(W$,(DM = 0) * 25 + 1,25):
      PRINT "ship for one with 50 more capacity by   paying an additional ";WW$;
        ", ";T$;"? ";

1630 CH$ = "YN":
     GOSUB 100:
     IF CH% = 1 THEN
       CA = CA - I:
       MW = MW + 50:
       SC = SC + 50:
       DM = 0:
       GOSUB 300

# offer gun
1700  REM 

1710 I =  INT ( FN R(1000 * (TI + 5) / 6) + 500):
     IF CA < I OR FN R(3) THEN 1900

1720 WW = I:
     GOSUB 600:
     GOSUB 400:
     PRINT "Do you wish to buy a ship's gun":
     PRINT "for ";WW$;", ";T$;"? ";:
     CH$ = "NY":
     GOSUB 100:
     IF CH% = 1 THEN 1900

1730  IF MW >= 10 THEN
        CA = CA - I:
        GN = GN + 1:
        MW = MW - 10:
        GOSUB 300:
        GOTO 1900

1740  PRINT :
      PRINT :
      PRINT "Your ship would be overburdened, ";T$;"!":
      CALL 2518:
      GOSUB 94

1900  IF ST(2,1) = 0 OR LO = 1 OR FN R(18) THEN 2000

# I think this is where you get your opium seized.
1910 I =  FN R(CA / 1.8):
     WW = I:
     GOSUB 600:
     GOSUB 400:
     CALL 2512:
     X =  USR (25) +  USR (26):
     PRINT WW$;", ";T$;"!":
     MW = MW + ST(2,1):
     ST(2,1) = 0:
     CA = CA - I:
     GOSUB 300:
     GOSUB 94

2000 W = 0:
     FOR J = 1 TO 4:
       W = W + ST(1,J):
     NEXT J:
     IF W = 0 OR  FN R(50) THEN 2100

2030 GOSUB 400:
     CALL 2512:
     X =  USR(25) +  USR(27):
     PRINT T$;"!":
     FOR J = 1 TO 4:
       W = ST(1, J):
       WW =  FN R(W / 1.8):
       WS = WS - W + WW:
       ST(1,J) = WW:
     NEXT J:
     GOSUB 300:
     GOSUB 96

# set prices
2100  FOR I = 1 TO 4:
        CP(I) = BP%(LO,I) / 2 * ( FN R(3) + 1) * 10 ^ (4 - I):
      NEXT I

2310 LI = LI AND  FN R(20):
     IF LI = 0 AND LI% > 0 THEN
       LI% = LI% + 1:
       IF LI% > 4 THEN
         LI% = 0

2330  IF LI = 0 AND LO <> 1 AND FN R(4) THEN
        GOSUB 400:X = USR (28):
        CALL 2521:
        GOSUB 94

2410  IF  FN R(9) THEN 2500

2420  GOSUB 400:
      I =  FN R(4) + 1:
      J =  FN R(2):
      K =  FN R(2) * 5:
      PRINT T$;"!!  The price of ";CO$(I)

2430  IF J = 0 THEN
        CP(I) =  INT(CP(I) / 5):
        PRINT "has dropped to ";CP(I);"!!":
        CALL 2518

2440  IF J = 1 THEN
        CP(I) = CP(I) * ( FN R(5) + 5):
        WW = CP(I):
        GOSUB 600:
        PRINT "has risen to ";WW$;"!!":
        CALL 2518

2450  GOSUB 94

2500  REM 

2501  GOSUB 400:
      IF CA > 25000 AND NOT ( FN R(20)) THEN
        I =  FN R(CA / 1.4):
        WW = I:
        GOSUB 60 0:
        X =  USR (25):
        PRINT "You' ve been beaten up and robbed of":
        PRINT WW$;" in cash, " ;T$;"!!":
        CALL 2512:
        CA = CA - I:
        GOSUB 300:
        GOSUB 94:
        VTAB 22:
        HTAB 1:
        PRINT CE$

2510  GOSUB 400:
      PRINT T$;:
      X =  USR (29)

2515  FOR I = 1 TO 3 STEP 2:
        PRINT TAB( 4); LEFT$ (CO$(I),7);" : ";
          CP(I); TAB( 18); LEFT$ ( CO$(I + 1),7);": ";CP(I + 1) :
      NEXT I

2520 I = CA + BA - DW:
     VTAB 22:
     HTAB 1:
     PRINT CE$

2522  IF LO <> 1 THEN
        X =  USR (30):CH$ = "BSQ"

2524  IF LO = 1 AND I < 1E6 THEN
        X =  USR (31) +  USR (32):
        CH$ = "BSQTV"

2526  IF LO = 1 AND I >= 1E6 THEN 
        X =  USR (31) +  USR (33):
        CH$ = "BSQTVR"

2528  GOSUB 100:
      ON CH% GOTO 2530,2570,2700,2620,2680,2695

2530  VTAB 23:
      HTAB 1:
      PRINT CE$;"What do you wish me to buy, ";T$;"? ";:
      CH$ = "OSAG":
      GOSUB 100:
      CO$ = CO$(CH%):
      CP = CP(CH%)

2540  VTAB 22:
      HTAB 1:
      PRINT CE$,IV$;:
      HTAB 31:
      PRINT " You can ";:
      VTAB 23:
      HTAB 31:
      PRINT "  afford ";:
      VTAB 24:
      HTAB 31:
      PRINT "         ";:
      W =  INT(CA / CP):
      IF W > 1E9 THEN
        W = 1E9 - 1

2542  HTAB 36 -  LEN ( STR$ (W)) / 2:
      PRINT W;NV$;:
      VTAB 23:
      HTAB 1:
      PRINT "How much ";CO$;" shall":
      PRINT "I buy, ";T$;"? ";:
      GOSUB 150:
      IF R1% THEN
      W =  INT (CA / CP):
      IF W > 1E9 THEN
        W = 1E9 - 1

2550  IF W < 0 OR CA < W * CP THEN 
        CALL 2524:
        GOTO 2540

2560 MW = MW - W:
     CA = CA - W * CP:
     ST(2,CH%) = ST(2,CH%) + W:
     GOSUB 300:
     VTAB 22:
     HTAB 1:
     CALL -958:
     GOTO 2520

2570 VTAB 23:
     HTAB 1:
     PRINT CE$ ;"What do you wish me to sell, ";T$;"? ";:
     CH$ = "OSAG":
     GOSUB 100:
     CO$ = CO$(CH%):
     CP = CP(CH%)

2580 VTAB 22:
     HTAB 1:
     PRINT CE$:
     PRINT "How much ";CO$;" shall":
     PRINT "I sell, ";T$;"? ";:
     GOSUB 150:
     IF R1% THEN
       W = ST(2,CH%)

2590  IF W < 0 OR ST(2,CH%) < W THEN 
        CALL 2524:
        GOTO 2580

2600 MW = MW + W:
     CA = CA + W * CP:
     ST(2,CH%) = ST(2,CH%) - W:
     GOSUB 300:
     VTAB 22:
     HTAB 1:
     PRINT CE$;:
     GOTO 2520

2620  REM 

2622 W = 0:
     FOR I = 1 TO 2:
       FOR J = 1 TO 4:
         W = W + ST(I,J):
     NEXT J,I:
     IF W = 0 THEN
       VTAB 22:
       HTAB 1:
       PRINT CE$;"You have no cargo, ";T$;".":
       CALL 2518:
       GOSUB 94:
       GOTO 2520

2624  FOR J = 1 TO 4:
        FOR K = 1 TO 2:
          I = 3 - K:
          IF ST(I,J) = 0 THEN 2634

2626  GOSUB 400:
      PRINT "How much ";CO$(J);" shall I move":
      PRINT MID$ ("to the warehouseaboard ship",K * 16 - 15,16);", ";T$;"? ";:
      GOSUB 150:
      IF R1% THEN
        W = ST(I,J):
        IF W > (WC - WS) AND K = 1 THEN
          W = (WC - WS)

2627  IF K = 2 THEN 2630

2628  IF W > 0 AND WS = WC THEN
        PRINT :
        PRINT :
        PRINT "Your warehouse is full, ";T$;"!":
        CALL 2518:
        GOSUB 94:
        GOTO 2626

2629  IF W > (WC - WS) THEN
        PRINT :
        PRINT :
        PRINT "Your warehouse will only hold an":
        PRINT "additional ";WC - WS;", ";T$;"!";:
        CALL 2518:
        GOSUB 94:
        GOTO 2626

2630  IF W > ST(I,J) THEN
        PRINT :
        PRINT :
        PRINT "You have only ";ST(I,J);", ";T$;".":
        CALL 2518:
        GOSUB 94:
        GOTO 2626

2632 ST(I,J) = ST(I,J) - W:
     ST(K, J) = ST(K,J) + W:
     MW = MW +  SGN (I - K) * W:
     WS = WS +  SGN (I - K) * W:
     GOSUB 300

2634 NEXT K,J:
     GOTO 2500

2680  REM 

2690 GOSUB 500:
     GOTO 2500

2695 OK = 16

2696 GOSUB 400:
     PRINT IV$; TAB(26):
     PRINT :
     PRINT " Y o u ' r e    a"; TAB( 26):
     PRINT :
     PRINT  TAB( 26):
     PRINT :
     PRINT " M I L L I O N A I R E ! ":
     PRINT  TAB( 26):
     PRINT NV$:
     GOSUB 96

2698 : GOSUB 20000

2699  PRINT "Play again? ";:
      CH$ = "NY":
      GOSUB 100:
      ON CH% GOTO 63999:
      RUN 

2700  REM 

2810  IF MW < 0 THEN
      GOSUB 400:
      PRINT "You're ship is overloaded, ";T$;"!!":
      CALL 2518:
      GOSUB 94:
      GOTO 2500

3010  GOSUB 400:
      PRINT T$;", do you wish to go to: ":
      PRINT "1) Hong Kong, 2) Shanghai, 3) Nagasaki, 4) Saigon, 5) Manila, 6) Singapore, or  7) Batavia ? ";

3020  CH$ = "1234567":
      GOSUB 100:
      D = CH%:
      IF D = LO THEN
        PRINT :
        PRINT :
        PRINT "You're already here, ";T$;".";:
        CALL 2518:
        GOSUB 94:
        GOTO 3010

3030 LO = 0:
     GOSUB 300:
     GOSUB 400:
     GOSUB 490

3100  REM 

3110 IF  FN R(BP) THEN 3200

3120 SN =  FN R(SC / 10 + GN) + 1:
     GOSUB 400:
     CALL 2512:
     PRINT SN;" hostile ship"; MID$ ("s",(SN = 1) + 1,1);" approaching, ";T$;"!!":
     GOSUB 96:
     F1 = 1:
     GOTO 5000

3200  REM 

3210 IF  FN R(4 + 8 * LI) THEN 3300

3220 GOSUB 400:
     PRINT "Li Yuen's pirates, ";T$;"!!":
     CALL 2521:
     GOSUB 94:
     IF LI THEN  PRINT :
       PRINT "Good joss!! They let us be!!":
       CALL 2521:
       GOSUB 94:
       GOTO 3300

3230 SN =  FN R(SC / 5 + GN) + 5:
     GOSUB 400:
     PRINT SN;" ships of Li Yuen's pirate":
     PRINT "fleet, ";T$;"!!":
     CALL 2512:
     GOSUB 94:
     F1 = 2:
     GOTO 5000
    
3300  REM 

3310  IF  FN R(10) THEN 3350

3320 GOSUB 400:
     PRINT "Storm, ";T$;"!!":
     CALL 2521:
     GOSUB 94:
     IF  NOT ( FN R(30)) THEN PRINT :
       PRINT "   I think we're going down!!":
       CALL 2521:
       GOSUB 94:
       IF  FN R(DM / SC * 3) THEN  PRINT :
         PRINT "We're going down, Taipan!!":
         CALL 2512:
         OK = 1:
         GOTO 2698
    
3330  PRINT :
      PRINT "    We made it!!":
      CALL 2521:
      GOSUB 94:
      IF  FN R(3) THEN 3350

3340 LO =  FN R(7) + 1:
     ON (LO = D) GOTO 3340:
     GOSUB 400:
     PRINT "We've been blown off course":
     PRINT "to ";LO$(LO):
     D = LO:
     GOSUB 94

3350 LO = D:
     GOTO 1000

5000  REM 

5030 LC = 0:
     CMD = 0:
     PRINT FS$;HM$

5050 VTAB 1:
     HTAB 1:
     PRINT "   ships attacking, ";T$;"!":
     VTAB 1:
     HTAB 32:
     PRINT CG$;"!":
     VTAB 2:
     HTAB 32:
     PRINT "!":
     VTAB 3:
     HTAB 32:
     PRINT "<::::::::";CS$:
     VTAB 2:
     HTAB 37:
     PRINT "guns":
     VTAB 1:
     HTAB 34:
     PRINT "We have";

5060  PRINT "Your orders are to: "

5080 FOR I = 0 TO 9:
       AM%(I,0) = 0:
       AM%(I,1) = 0:
     NEXT I:
     SA = SN:
     S0 = SN:
     BT =  FN R(TI / 4 * 1000 * SN ^ 1.05) +  FN R(1000) + 250:
     SS = 0

5090  REM 

5100 GOSUB 5760:
     GOSUB 5700:
     LC = CMD:
     VTAB 12:
     HTAB 40:
     PRINT MID$ ("+ ", NOT (SA) + 1,1)

5160 DM =  INT (DM):
     WW = 100 -  INT (DM / SC * 100):
     IF WW < 0 THEN
       WW = 0

5162 VTAB 4:
     PRINT "Current seaworthiness:";
       ST$( INT (WW / 20));" (";WW;"%)":
     GOSUB 5600:
     VTAB 4:
     PRINT CL$

5165 IF WW = 0 THEN
       OK = 0:
       GOTO 5900

5175  GOSUB 5600

5180  ON CMD GOTO 5200,5300,5400
 
5190 VTAB 4:
     PRINT T$;", what shall we do??":
     CALL 2512:
     GOSUB 5600:
     ON (CMD = 0) + 1 GOTO 5500,5180

5200  REM 

5205 VTAB 4:
     HTAB 1:
     PRINT CL$:
     VTAB 4:
     PRINT "Aye, we'll run, ";T$;"!":
     GOSUB 96:
     VTAB 4:
     PRINT CL$

5207 IF LC = 1 OR LC = 3 THEN
       OK = OK + IK:
       IK = IK + 1

5208 IF LC = 0 OR LC = 2 THEN
       OK = 3:
       IK = 1

5210 IF  FN R(OK) >  FN R(SN) THEN 
       VTAB 4:
       PRINT "We got away from 'em, ";T$;"!!":
       CALL 2518:
       GOSUB 96:
       VTAB 4:
       PRINT CL$:
       OK = 3:
       GOTO 5900

5220 VTAB 4:
     PRINT "Can't lose 'em!!":
     GOSUB 5600:
     VTAB 4:
     PRINT CL$

5230 IF SN > 2 AND  FN R(5) = 0 THEN
       W =  FN R(SN / 2) + 1:
       SN = SN - W:
       SA = SA - W:
       GOSUB 5680:
       GOSUB 5750:
       VTAB 4:
       PRINT "But we escaped from ";W;" of 'em, ";T$;"!":
       GOSUB 5600:
       VTAB 4:
       PRINT CL$

5240  GOTO 5500

5300  REM 

5302 IF GN = 0 THEN
       VTAB 4:
       HTAB 1:
       PRINT "We have no guns, " ;T$;"!!":
       GOSUB 5600:
       VTAB 4 :
       PRINT CL$:
       GOTO 5500

5305 VTAB 4:
     HTAB 1:
     PRINT CL$:
     VTAB 4:
     PRINT "Aye, we'll fight 'em, ";T$;"!":
     GOSUB 5600:
     VTAB 4:
     PRINT CL$

5310 SK = 0:
     VTAB 4:
     PRINT "We're firing on 'em, ";T$;"!":
     FOR K = 1 TO GN:
     IF SN = 0 THEN 5340

5320 I =  FN R(10):
     IF AM%(I,0) = 0 THEN 5320

5330 GOSUB 5840:
     AM%(I,1) = AM%(I,1) +  FN R(30) + 10:
     IF AM%(I,1) > AM%(I,0) THEN
       AM%(I ,0) = 0:
       AM%(I,1) = 0:
       GOSUB 5860:
       GOSUB 5820:
       SK = SK + 1 :
       SN = SN - 1:
       SS = SS - 1:
       GOSUB 5750:
       IF SS = 0 THEN
         GOSUB 5700

5340 NEXT K:
     IF SK > 0 THEN
       VTAB 4:
       HTAB 1:
       PRINT "Sunk ";SK;" of the buggers, ";T$;"!":
       CALL 2521:
       GOSUB 5600:
       VTAB 4:
       PRINT CL$

5350 IF SK = 0 THEN
       VTAB 4:
       HTAB 1:
       PRINT "Hit 'em, but didn't sink 'em, ";T$;"!":
       GOSUB 5600:
       VTAB 4:
       PRINT CL$

5360 IF FN R(S0) < SN * .6 / F 1
       OR SN = 0
       OR SN = S0
       OR SN < 3
       THEN 5500

5362 W =  FN R(SN / 3 / F1) + 1:
     SN = SN - W:
     SA = SA - W:
     GOSUB 5680

5390 VTAB 4:
     PRINT W;" ran away, ";T$;"!":
     GOSUB 5750:
     CALL 2521:
     GOSUB 5600:
     VTAB 4:
     PRINT CL$:
     GOTO 5500

# throw cargo
5400  REM 

5410 GOSUB 400:
     PRINT "You have the following on board, ";T$;": ";:
     FOR J = 1 TO 4:
       VTAB 20 + (J = 3 OR J = 4):
       HTAB 1 + 19 * (J = 2 OR J = 4):
       PRINT RIGHT$ ("         " +  LEFT$(CO$(J),7),9);": ";ST(2,J):
     NEXT J

5420 VTAB 4:
     PRINT "What shall I throw overboard, ";T$;"? ";:
     CH$ = "OSAG*":
     GOSUB 100:
     VTAB 4:
     HTAB 1:
     PRINT CL$

5430 IF CH% = 5 THEN
       II = 1:
       IJ = 4:
       IK = 1E9:
       GOTO 5450

5440 VTAB 4:
     PRINT "How much, ";T$;"? ";:
     GOSUB 150:
     II = CH%:
     IJ = CH%:
     IF R1% THEN
       W = ST(2,II)

5450 WW = 0:
     FOR J = II TO IJ:
       IK = ST(2,J):
       IF W > IK THEN
         W = IK

5460    ST(2,J) = ST(2,J) - W:
        WW = WW + W:
        MW = MW + W:
     NEXT J:
     VTAB 4:
     HTAB 1:
     PRINT CL$

5470 IF WW = 0 THEN
     VTAB 4:
     PRINT "There's nothing there, ";T$ ;"!":
     CALL 2518:
     GOSUB 5600:
     VTAB 4:
     PRINT CL$

5480 GOSUB 400:
     IF WW > 0 THEN
       RF = RF + WW / 3:
       OK = OK + W W / 10:
       VTAB 4:
       PRINT "Let's hope we lose 'em, ";T$;"!":
       CALL 2521:
       GOSUB 5600:
       VTAB 4:
       PRINT CL$:
       GOTO 5210

5500  REM 

5505 IF SN = 0 THEN
       VTAB 4:
       PRINT "We got 'em all, ";T$;"!!":
       CALL 2521:
       GOSUB 5600:
       OK = 1:
       GOTO 5900

5510 VTAB 4:
     PRINT "They're firing on us, ";T$;"!":
     GOSUB 5600:
     VTAB 4:
     PRINT CL$

5540 FOR I = 1 TO 10:
       POKE -16298,0:
       POKE -16299,0:
       POKE -16297,0:
       POKE -16300,0:
       FOR J = 1 TO 10:
     NEXT J,I

5542 VTAB 4:
     PRINT "We've been hit, ";T$;"!!":
     CALL 2512

5545 I = SN:
     IF I > 15 THEN
       I = 15

5550 IF GN THEN
       IF FN R(100) < (DM / SC) * 100
         OR (DM / SC) * 100 > 80 THEN
           I = 1:
           GOSUB 5600:
           VTAB 4:
           PRINT CL$:
           VTAB 4:
           PRINT "The buggers hit a gun, ";T$;"!!":
           CALL 2512:
           GN = GN - 1:
           MW = MW + 10:
           GOSUB 5600:
           VTAB 4:
           PRINT CL$

5555 DM = DM +  FN R(ED * I * F1) + I / 2

5560 IF  NOT ( FN R(20)) AND F1 = 1 THEN
       OK = 2:
       GOTO 5900

5590 GOTO 5090

5600 VTAB 2:
     HTAB 21:
     FOR II = 1 TO T / 3

5610   W = PEEK (-16384):
       IF W < 128 THEN
         NEXT II:
         PRINT:
         RETURN 
 
5620 IF W = 210 THEN
       CMD = 1:
       PRINT "Run        "

5630 IF W = 198 THEN
       CMD = 2:
       PRINT "Fight      "

5640 IF W = 212 THEN
       CMD = 3:
       PRINT "Throw cargo"

5650 POKE  -16368,0:
     PRINT 

5670 RETURN 

5680 IF SA >  = 0 THEN
       RETURN 
 
5681 I = 9:
     FOR IJ = SA TO  - 1

5682   IF AM%(I,0) = 0 THEN
         I = I - 1:
         GOTO 5682

5683   AM%(I,0) = 0:
       AM%(I,1) = 0:
       GOSUB 5880:
       GOSUB 5820:
       I = I - 1:SS = SS - 1:
     NEXT IJ:
     RETURN 
 
5700  REM 

5710 FOR I = 0 TO 9:
       IF AM%(I,0) THEN 5740

5720   SA = SA - 1:
       IF SA < 0 THEN 
         SA = 0:
         RETURN 

5730   AM%(I,0) =  FN R(EC) + 20:
       AM%(I,1) = 0:
       GOSUB 5800:SS = SS + 1

5740 NEXT I:
     RETURN 

5750  REM 

5760 VTAB 1:
     HTAB 1:
     PRINT  RIGHT$("    " +  STR$ (SN),4)

5770 VTAB 2:
     HTAB 33:
     PRINT  RIGHT$("   " +  STR$ (GN),3):
     RETURN 

5800 GOSUB 5880:
     HTAB X:
     VTAB Y :
     PRINT SH$:
     RETURN 

5820 GOSUB 5880:
     HTAB X:
     VTAB Y :
     PRINT SB$:
     RETURN 

5840 GOSUB 5880:
     POKE 2493,(Y + 4) * 8 - 1:
     POKE 2494,X - 1:
     FOR J = 0 TO 1:
       IJ =  FN R(6):
       II = DL%(IJ,J):
       HTAB X +  INT(II / 10):
       VTAB Y + II -  INT(II / 10) * 10:
       PRINT DM$(IJ,J):
     NEXT J:
     CALL 2368:
     RETURN 

5860 GOSUB 5880:
     POKE 2361,(Y + 4) * 8 - 1:
     POKE 2362,X - 1:
     POKE 2300, FN R( FN R(192)) :
     CALL 2224:
     RETURN 

5880 X = (I -  INT (I / 5) * 5) * 8 + 1:
     Y =  INT (I / 5) * 6 + 7:
     RETURN 

5900 GOSUB 200:
     GOSUB 300:
     GOSUB 400

5910 IF OK = 0 THEN
     PRINT "The buggers got us, ";T$;"!!!":
     PRINT "It's all over, now!!!":
     OK = 1:
     GOTO 2698

5920 IF OK = 1 THEN
     GOSUB 400:
     PRINT "We've captured some booty":
     WW = BT:
     GOSUB 600:
     PRINT "It's worth ";WW$;"!":
     CALL 2518:
     CA = CA + BT:
     GOSUB 96:
     GOTO 3300

5930 IF OK = 2 THEN
     PRINT "Li Yuen's fleet drove them off!":
     GOSUB 96:
     GOTO 3220

5940 IF OK = 3 THEN
     PRINT "We made it, ";T$;"!":
     CALL 2518 :
     GOSUB 96:
     GOTO 3300

# initialization stuff
10000  REM  

10010 CALL 6147:
      POKE 1013,76:
      POKE 1014,224:
      POKE 1015,9:
      POKE 10,76:
      POKE 11,16:
      POKE 12,11:
      POKE 1010,102:
      POKE 1011,213:
      POKE 1012,112:
      DIM LO$(7),CO$(4),CP(4),BP%(7,4),ST(2,4),AM%(9,1),DM$(5,1),DL%(5,1),ST$(5)

10020 DEF  FN R(X) =  INT (USR (0) * X)

10040 HM$ =  CHR$(16):
      CS$ =  CHR$(1) + "0":
      CA$ =  CHR$(1) + "1":
      CG$ =  CHR$(1) + "2":
      BD$ =  CHR$(2):
      CD$ =  CHR$(3):
      DD$ =  CHR$(4):
      IV$ =  CHR$(9):
      NV$ =  CHR$(14):
      FS$ =  CHR$(25):
      CE$ =  CHR$(6):
      CL$ =  CHR$(5)

10045 IF PEEK (2367) = 236 THEN 10070

10050 POKE -16368,0

# USR(0) is used for random numbers. I suspect this loop is
# intended to randomize things by iterating the PRNG until
# the user presses a key.
10060 FOR I = 1 TO 400:
      CH% = PEEK(-16384):
      X = USR(0):
      IF CH% < 128 THEN
      NEXT 

# pretty obviously flashes the 'ESC' on the title screen.
10062 VTAB 20:
      HTAB 31:
      PRINT IV$;CA$;"'ESC'";:
        FOR I = 1 TO 20:
        X =  USR (0):
        IF PEEK (-16384) <> 155 THEN
          NEXT :
          VTAB 20:
          HTAB 31:
          PRINT NV$;CA$ + "'ESC'";:
          FOR I = 1 TO 20:
            X =  USR (0):
            IF PEEK (-16384) <> 155 THEN
              NEXT :
              GOTO 10062

10070 POKE 2367,236:
      POKE -16368,0:
      PRINT NV$;FS$;HM$

10110 VTAB 8:
      HTAB 1:
      PRINT CG$;"[";:
      & 45,38:
      PRINT "]";:
      FOR I = 1 TO 8:
        PRINT "!"; TAB(40);"!";:
      NEXT I:
      PRINT "<";:
      & 58,38:
      PRINT ">";CS$

10120 VTAB 10:
      HTAB 7:
      PRINT CS$;T$;",":
      VTAB 12:
      HTAB 3:
      PRINT "What will you name your":
      VTAB 15:
      HTAB 13:
      & 45,22:
      VTAB 14:
      HTAB 7:
      PRINT "Firm:
      ";CA$;:
      & 32,27:
      VTAB 14:
      HTAB 13:
      POKE 33,39:
      CALL 2200:
      POKE 33,40:
      WK$ =  MID$ (WK$,1):
      IF WK$ = "" THEN
        CALL 2521:
        GOTO 10120

10130 IF LEN (WK$) > 22 THEN
        PRINT :
        VTAB 18:
        PRINT IV$;:
        & 32,42:
        PRINT "Please limit your Firm's name to 22     characters or less.";:
        & 32,59:
        PRINT NV$:
        CALL 2518:
        GOSUB 92:
        VTAB 18:
        PRINT CE$:
        GOTO 10120

10140 H$ = WK$:
      PRINT HM$;CS$:
      VTAB 6:
      PRINT "Do you want to start . . .":
      PRINT :
      PRINT :
      PRINT "  1) With cash (and a debt)":
      PRINT :
      PRINT :
      PRINT ,">> or <<":
      PRINT :
      PRINT :
      PRINT "  2) With five guns and no cash":
      PRINT ,"(But no debt!)"

10150 PRINT :
      PRINT :
      PRINT  TAB(10);" ?";:
      CH$ = "12":
      GOSUB 100:
      MO = 1:
      YE = 1860:
      SC = 60 :
      BA = 0:
      LO = 1:
      TI = 1:
      WC = 10000:
      WS = 0

10160 IF CH% = 1 THEN
        DW = 5000 :
        CA = 400:
        MW = 60:
        GN = 0:
        BP = 10

10170 IF CH% = 2 THEN
        DW = 0:
        CA = 0:
        MW = 10:
        GN = 5:
        BP = 7

10180 FOR I = 0 TO 7:
        READ LO$(I):
      NEXT I:
      DATA At sea,Hong Kong,Shanghai,Nagasaki,Saigon,Manila,Singapore,Batavia

10190 FOR I = 1 TO 4:
        READ CO$(I):
          FOR J = 1 TO 7:
            READ BP%(J,I):
      NEXT J,I

10200 DATA Opium,11,16,15,14,12,10,13,
           Silk,11,14,15,16,10,13,12,
           Arms,12,16,10,11,13,14,15,
           General Cargo,10,11,12,13,14,15,16

10210 FOR I = 0 TO 5:
        READ ST$(I):
      NEXT I:
      DATA "Critical", "  Poor","  Fair","  Good"," Prime","Perfect" 

10250 SH$ = BD$ + CG$ + "ABCDEFG" +
            CD$ + "HIJKLMN" +
            CD$ + "OIJKLPQ" +
            CD$ + "RSTUVWX" +
            CD$ + "YJJJJJZ" + DD$

10260 SB$ = BD$:
      FOR II = 1 TO 5:
        SB$ = SB$ + "       " + CD$:
      NEXT II:
      SB$ = SB$ + DD$

10270 FOR I = 0 TO 5:
        FOR J = 0 TO 1:
          CH$ = BD$ + CG$

10280      READ WK$:
           CH$ = CH$ + WK$:
           IF RIGHT$ (CH$,1) = "*" THEN
             CH$=MID$(CH$,1,LEN(CH$) - 1) + CD$:
             GOTO 10280

10290        DM$(I,J) = CH$ + DD$: READ DL%(I,J):
        NEXT J,I

10300 DATA cde,20,r,3,fg*,mn,50,tu,23,ij,11,vw,43,0,22,x*,z,63,kl,32,12,14,pq,52,345,34
 
10310 EC = 20:
      ED = .5

10990 GOSUB 200: GOTO 1000

# final stats
20000 REM 

20010 WW = CA + BA - DW:
      GOSUB 600:
      WW =  INT ((CA + BA - DW) / 100 / TI ^ 1.1)

20020 PRINT FS$;HM$;CS$;:
      PRINT "Your final status: ":
      PRINT :
      PRINT "Net Cash: ";WW$:
      PRINT :
      PRINT "Ship size: ";SC;" units with ";GN;" guns":
      PRINT 
 
20030 PRINT "You traded for ";
            INT(TI / 12);" year";
            MID$ ("s",(TI > 11 AND TI < 24) + 1,1);
            " and ";TI -  INT (TI / 12) * 12;" month";
            MID$ ("s",((TI -  INT (TI / 12) * 12) = 1) + 1,1):
      PRINT :
      PRINT IV$;"Your score is ";WW;".";NV$
 
20040 VTAB 14:
      PRINT "Your Rating: ":
      PRINT CG$;"[";:
      & 45,31:
      PRINT "]":
      FOR I = 1 TO 5 :
        PRINT "!";:
        HTAB 33:
        PRINT "!":
      NEXT I:
      PRINT "<";:
      & 5 8,31:
      PRINT ">";CS$:
      VTAB 16

20050 HTAB 2:
      IF WW > 49999 THEN 
        PRINT IV$;

20060 PRINT "Ma Tsu";NV$;"     50,000 and over "

20070 HTAB 2:
      IF WW < 50000 AND WW > 7999 THEN
        PRINT IV$;

20080 PRINT "Master ";T$;NV$;" 
	8,000 to 49,999"

20090 HTAB 2:
      IF WW < 8000 AND WW > 999 THEN
        PRINT IV$;

20100 PRINT T$;NV$;"          1,000 to  7,999"

20110 HTAB 2:
      IF WW < 1000 AND WW > 499 THEN
        PRINT IV$;

20120 PRINT "Compradore";NV$;" 500 to    999"

20130 HTAB 2:
      IF WW < 500 THEN
        PRINT IV$;

20140 PRINT "Galley Hand";NV$;" less than 500"

20170  VTAB 11

20180 IF WW < 99 AND WW >= 0 THEN 
        PRINT "Have you considered a land based job?":
        PRINT 

20190 IF WW < 0 THEN
        PRINT "The crew has requested that you stay on shore for their safety!!":
        PRINT 

20900 VTAB 23:
      RETURN 

63999 PRINT FS$;HM$:
      TEXT :
      HOME :
      POKE 103,1:
      POKE 104,8:
      END