; Disassembly of the machine code "STRANDED.DAT" from ; "stranded_on_rigel_5_(300-baud)_[sean_walsh].prg" ; in "Stranded%20On%20Rigel%205%20(Sean%20Walsh).zip" ; ; CPU Type: Z80 for the Bally Professional Arcade ; ; Created by Richard C. Degler with dZ80 2.0 ; using script "BallyHVG.LUA" from scratch ; ; on Monday, 11 of October 2010 at 05:06 AM ; ; This code assembles with ZMac assembler ; command line: zmac -i -m STRANDED.ASM ; ; [modified BALLY Basic listing - will not txt2prg properly] ; [commented by Richard C. Degler using prototype prg2txt's] ; ; [Both versions are the same, except for the comments on one and different Direct Command loaders :] ; ; {13} ; {13} ; .STRANDED ON RIGEL 5{13} ; .BY SEAN WALSH{13} ; .ARCADIAN VOL.4 PG.72&73{13} ; {13} ; {13} ; [note: first line copies program and fontdata to TeXT area] ; for A=-24576to -22776;%(A)=KP;next A;%(20050)=-22886;:return ;run {13} ; [loads 1800 bytes, sets TXTUNF near bottom, turns off tape] ; ; [or as printed in the Arcadian ...] ; ; {13} ; A = -24576;B= -22784;for N=Ato B;%(N)=KP;next N;%(20050)=B-102;:return ;run {13} ; [Not sure why there are extra spaces in the second version, and {13}'s are c/r's] ; ; [line numbers in the following section were actually words] ; 6 W=20200;Y=W+13;R=W+3;F=-40;BC=0;FC=126;clear ;for A=-80to 80;line A,-40,0;F=F+rnd (3)-2;if F<-40F=-40 ; [W is Alt STRing DISplay, Y is Character, R is X and Y loc] ; 7 line A,F,1;if A>50box rnd (160)-80,rnd (70)-40,1,1,1 ; 10 next A;print " STRANDED ON RIGEL 5";P=0;for A=17to 20;&(A)=7;next A;&(16)=92;&(22)=-1;if KPinput S ; [show Title with noise, enter S for Speed] ; 80 gosub 900;O=0;K=20;gosub 749+(P>0) ; [mute sounds, clear ??, and restore alt font to first shapes] ; 100 clear ;box -50,32,60,1,1;box -42,-5,1,74,1;P=0;box 0,0,3,87,1;box -5,0,10,2,1;%(Y)=128;%(R)=8774 ; 105 CALLW;for A=0to 4 ; [display a character $80 at X=70 and Y=34 ??] ; 110 @(A)=rnd (10)-1;for Q=0to A-1;if A=0next A ; [pick a random digit 0 to 9, bail if first one] ; 111 if @(A)=@(Q)goto 110 ; [matched existing digit - try again] ; 120 next Q;next A;print "input CODE";print ; [code number generated, ask for 5 digits] ; 124 for P=1to 8;for A=5to 9 ; [P is Pass number, A is second group of array numbers] ; 125 @(A)=KP-48;if (@(A)<0)+(@(A)>9)goto 125 ; [input a digit and validate] ; 126 TV=@(A)+48;next A;C=0;D=0;for A=0to 4;if @(A)=@(A+5)C=C+1 ; [display digits, reset counters, increment C for each Correct] ; 140 for Q=5to 9;if @(A)=@(Q)D=D+1 ; [compare against all 5 existing digits, increment D if found] ; 143 next Q;next A;CX=-36;print #0,D,"-",#0,C;if C=5goto 180 ; [display results, to you won routine if all Correct] ; 161 for A=17to 20;&(A)=-1;next A;&(16)=33;&(22)=Pmul 31;next P ; [ramp sound effects on any wrong digit found] ; 170 %(Y)=129;%(R)=67;CALLW;N=9 ; [display a character $81 at X=67 and Y=0 ??] ; 172 for A=32to Nstep -5;&(18)=-A;box -7,A,2,5,3;box -7,A,2,5,3;next A;box -7,N,7,2,2;N=N-2;if N>2goto 172 ; [cycle sound effect, blow up screen ??] ; 175 gosub 700;goto 190 ; [do ??, skip over you won to go again] ; 180 box 0,6,3,10,2;box 16,0,35,1,1;box 40,-30,50,5,1;box 40,-13,30,30,1;box 40,4,20,5,1;box 40,14,5,16,1;box 40,-30,5,5,2 ; [you won phase one! here's your prize] ; 190 gosub 900;CX=12;CY=40;print "CODE WAS:";CX=21;for A=0to 4;print #0,@(A),;next A;if KPif P=9goto 100 ; [either way, mute sound and go again on failure] ; 500 K=0;gosub 750 ; [start of phase two, load font shapes two] ; 510 clear ;E=0;for A=1to 30;box rnd (160)-80,rnd (88)-44,1,1,1;next A;for T=1to 3;gosub 600;next T;V=80;H=V ; [??, fill screen with targets, and center ??] ; 520 for N=1to rnd (8-S)mul 14;H=H+JX(1)mul 4;%(R)=20480+H;CALLW;if TR(1)&(22)=-1;gosub 580 ; [draw character 0 at ??, and check for shot] ; 530 CALLW;next N;for A=48-Tmul 10to 40step 10;for B=-74to 80step 16;if PX(B,A)gosub 600;T=T+1;goto 520 ; [display a character 0, check for targets ??] ; 540 next B;T=T-1;next A;CALLW;goto 800 ; [no targets left, if done display a character 0 and end] ; 580 for A=-32to 40step 10;box H-74,A,2,5,3;box H-74,A,2,5,3 ; [shot ?? routine] ; 581 &(18)=A;if PX(H-74,A)box H-75,A+1,11,9,2;&(21)=-1;&(23)=9;gosub 900;return ; [check for collision and ?? beep] ; 590 next A;E=E+1;return ; [else missed, continue] ; 600 %(Y)=129;for A=0to 9;%(R)=2560mul T+Amul 16;CALLW;next A;%(Y)=128;if T#8return ; [seed screen targets ?? routine - draw 10 character 1's, set character 0] ; 610 for A=1to 40;MU=3;next A;gosub 700;goto 510 ; [rarely beep and flash screen] ; 700 for Z=1to 7;&(21)=-1;&(18)=99;&(19)=99;&(16)=1;&(23)=9;BC=7-Z;next Z;gosub 900;O=O+1;if O<5return ; [noise and flash screen ?? routine, mute and decrement lives] ; 710 clear ;print "YOUR 5 LIVES ARE GONE";print "YOU HAVE FAILED!";if KPgoto 80 ; [out of lives, wait for kp then restart] ; 749 for A=0to 10;C=W+Amul 2;%(C)=@(A);next A ; [copy 22 bytes of machine code routine on pass 1 only] ; 750 C=Y+7;for A=31-Kto 50-K;C=C+2;%(C)=@(A);next A;return ; [copy 40 bytes of first or second font info into font] ; 800 for A=16to 19;&(A)=60;next A;&(21)=89;&(22)=-1;&(23)=61;for A=1to 15;print ;next A;gosub 900;print "GREAT! ; [successful end of game ?? routine - make cheer] ; 810 print "EFFICIENCY IS",100-Omul 9-P-E+Smul 3,"%";if KPgoto 80 ; [show score, wait for kp then restart] ; 900 for Z=16to 23;&(Z)=0;next Z;return ; After Line 900 is the "end of program marker" and the "@(array)" which contains the "machine language" section as follows : ; DW $FF00 ; -256 [end of Basic program flag] ORG $4EE8 ; ****** Start from BALLY Basic with CALL20200 *** <-- Variable 'W' is pointed here L4EE8: PUSH DE ; store Basic Program pointer <-- copied starting from @(0) SYSSUK STRDIS ; UPI STRing DISplay DB $4B ; ... X = 75 <-- Variable 'R' is pointed here DB $00 ; ... Y = 0 DB $28 ; ... Options = 40 DW L4EF2 ; ... String Address = 20210 ; POP DE ; restore Basic Program pointer RET ; ****** Formatting Text string *** L4EF2: DB $70,$F8,$4E ; load IX with 20216 for Alternate Font Descriptor DB $81,$00 ; ASCII $80 and/or $81 (Null Terminated) <-- Variable 'Y' ; L4EF7: 1 spare byte for ?? DB $30 ; ****** Alternate Font Descriptor block *** (at 20216) L4EF8: DB $80 ; FonT BASE character = 128 (normally 32) DB $09 ; ... Frame X Size width = 9 DB $0F ; ... Frame Y Size height = 15 DB $02 ; ... X size for char in BYTEs = 2 DB $09 ; ... Y SIZe height in rows = 9 DW $4EFF ; ... Pattern Table address = 20223 ; ****** Special Two-character 9 x 15 Font *** 20 words moved by Basic to 20222 L4EFF: ; *** Char $80 Human, First shape DB $38,$00 ; . . X X X . . . . . . . . . . . <-- @(11 to 30) DB $FE,$00 ; X X X X X X X . . . . . . . . . DB $FE,$00 ; X X X X X X X . . . . . . . . . DB $BA,$00 ; . . . X . . . . . . . . . . . . DB $38,$00 ; . . X X X . . . . . . . . . . . DB $7C,$00 ; . X X X X X . . . . . . . . . . DB $6C,$00 ; . X X . X X . . . . . . . . . . DB $C6,$00 ; X X . . . X X . . . . . . . . . DB $00,$00 ; . . . . . . . . . . . . . . . . ; *** Char $81 Lander, First shape DB $07,$00 ; . . . . . X X X . . . . . . . . DB $3F,$E0 ; . . X X X X X X X X X . . . . . DB $32,$60 ; . . X X . . X . . X X . . . . . DB $3F,$E0 ; . . X X X X X X X X X . . . . . DB $15,$40 ; . . . X . X . X . X . . . . . . DB $17,$40 ; . . . X . X X X . X . . . . . . DB $3A,$E0 ; . . X X . . . . X X X . . . . . DB $02,$00 ; . . . . . . X . . . . . . . . . DB $07,$00 ; . . . . . X X X . . . . . . . . ; 3 filler bytes (not used) DB $00,$00 ; . . . . . . . . . . . . . . . . <-- 3 additional bytes DB $00,$4E ; . . . . . . . . . X . . X X X . <-- high byte of address ; *** Char $80 Human, Second shape DB $04,$00 ; . . . . . X . . . . . . . . . . <-- @(31 to 50) DB $04,$00 ; . . . . . X . . . . . . . . . . DB $04,$00 ; . . . . . X . . . . . . . . . . DB $0E,$00 ; . . . . X X X . . . . . . . . . DB $1F,$00 ; . . . X X X X X . . . . . . . . DB $1F,$00 ; . . . X X X X X . . . . . . . . DB $1F,$00 ; . . . X X X X X . . . . . . . . DB $3B,$80 ; . . X X . . . X X . . . . . . . DB $7B,$C0 ; . X X X . . . X X X . . . . . . ; *** Char $81 Lander, Second shape DB $1F,$00 ; . . . X X X X X . . . . . . . . DB $7F,$C0 ; . X X X X X X X X X . . . . . . DB $AA,$A0 ; X . X . X . X . X . X . . . . . DB $7F,$C0 ; . X X X X X X X X X . . . . . . DB $1F,$00 ; . . . X X X X X . . . . . . . . DB $0E,$00 ; . . . . X X X . . . . . . . . . DB $7F,$C0 ; . X X X X X X X X X . . . . . . DB $64,$C0 ; . X X . . X . . X X . . . . . . DB $F1,$E0 ; X X X X . . . X X X X . . . . . ; 14 filler bytes ?? DB $00,$00 ; . . . . . . . . . . . . . . . . <-- 3 additional bytes DB $00,$00 ; . . . . . . . . . . . . . . . . DB $00,$00 ; . . . . . . . . . . . . . . . . DB $00,$00 ; . . . . . . . . . . . . . . . . DB $00,$00 ; . . . . . . . . . . . . . . . . DB $00,$00 ; . . . . . . . . . . . . . . . . DB $00,$00 ; . . . . . . . . . . . . . . . . ; end of file END As you can see, the machine code portion is moved by the Basic program before being used, and either two-character font can also be copied into position. Hope everyone has "Lucinda Terminal" font - the regular "Terminal" changed   to á in the preview. Used 
code
instead of text as one eats all blank lines. If this listing is too fragged up, and for my comments on the Basic listing, see : http://tech.groups.yahoo.com/group/ballyalley/files/STRANDED.ASM Richard Degler --- In ballyalley@yahoogroups.com, Adam Trionfo wrote: > > > I added the "ML version" of "Stranded on Rigel 5" by Sean Walsh to > BallyAlley.com. The "regular" version of this game was already on the > website. Now the archive contains both versions of this game. Paul, can you > tell me what is different about these two games. From the Arcadian's > description, it seems like the machine language MUST be included with the > game to work properly. Is the non-ML version of the game incomplete? > > "Stranded on Rigel 5" is the May 1982 $100 prize winner in the Arcadian > newsletter. This program is for use with Bally BASIC only; it is NOT > compatible with AstroBASIC. > > This archive would make another great use of the digital-archiving procedure, > as the non-digital archive is 8MB for both versions of the game. > > The program can be downloaded here: > > http://tinyurl.com/2c2p587 > > (or use the full URL:) > > http://www.ballyalley.com/program_downloads/300_baud_programs/misc/misc.html > > The game starts a little strangely (kind of like the game Mastermind). I > have gone ahead and typed-up the instructions out of the Arcadian. They are > included with the above archive, or you can view them here: > > http://tinyurl.com/2c2cfj5 > > (or use the full URL:) > > http://www.ballyalley.com/program_downloads/300_baud_programs/misc/Stranded%20On%20Rigel%205%20%28ML%20version%29%20%281982%29%28Sean%20Walsh%29%28300%20baud%29%28PD%29.txt > > Have fun! > > Adam >