We just released a Feb. 5 '89 prototype of DuckTales for the NES!
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If you'd like to support our preservation efforts (and this wasn't cheap), please consider donating or supporting us on Patreon. Thank you!
Arcade Flight Simulator (ZX Spectrum)
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Games > Games by content > Games with uncompiled source code
Games > Games by developer > Games developed by Amazing Games
Games > Games by platform > ZX Spectrum games
Games > Games by publisher
Games > Games by publisher > Games published by Electronic Arts > Games published by Codemasters
Games > Games by release date > Games released in 1989
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| Arcade Flight Simulator |
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Developer:
Amazing Games
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-title.png)
Source Code Fragment
A large section of the code is left in the game. The code seen below can be seen with a hex editor, starting at A10A in the .tap dump of the game.
LD A,(FLPFLP)
CP 0
RET Z
LD A,252
LD (ENGONF),A
LD A,(IX+0)
CP 0
JR Z,HITGRD
DEC A
LD (IX+0),A
LD A,(DE)
CP 100
CALL Z,FALLIN
RET
HITGRD LD A,252
LD (IX+3),A
LD (ENGONF),A
XOR A
LD (DE),A
LD A,(STAGE)
LD (EXPCNT),A
RET
EXPCNT DEFB 0
EXPLOD CP 255
JR Z,NODEPL
INC A
LD (IX+3),A
RET
NODEPL LD A,(EXPCNT)
CP 0
JR Z,GONDIE
DEC A
LD (EXPCNT),A
LD A,253
LD (ENGONF),A
LD (IX+3),A
LD A,(EXPCNT)
CP 0
JR Z,EXP1
CP 1
JR Z,EXP2
JR EXP3
GONDIE LD (IX+2),0
LD (IX+3),0
LD A,(NOALIS)
DEC A
LD (NOALIS),A
XOR A
LD (DE),A
RET
EXP1 LD A,(IX+1)
ADD A,3
LD (IX+1),A
LD A,(IX+2)
SUB 4
LD (IX+2),A
RET
EXP2 LD A,(IX+1)
ADD A,2
LD (IX+1),A
LD A,(IX+2)
ADD A,6
LD (IX+2),A
RET
EXP3 LD A,(IX+1)
SUB 4
LD (IX+1),A
LD A,(IX+2)
SUB 4
LD (IX+2),A
RET
HEIGHT DEFB 0
BONDWN LD A,(HL)
CP "0"
JR NZ,FNDBOD
DEC HL
DJNZ BONDWN
RET
FNDBOD DEC A
LD (HL),A
LD A,B
CP 3
RET Z
INC HL
LD (HL),"9"
CP 1
RET NZ
INC HL
LD (HL),"9"
RET
GAMESU LD HL,SCORE1
LD DE,SCORE1+1
LD (HL),"0"
LD BC,15
LDIR
LD A,"3"
LD (LIVES1),A
LD (LIVES2),A
LD HL,BONUS1
LD DE,BONUS1+1
LD BC,9
LD (HL),"0"
LDIR
LD A,(STAGE)
ADD A,48
LD (BONUS1+1),A
LD (BONUS2+1),A
RET
LIVES1 DEFB 0
LIVES2 DEFB 0
BETALS DEFB 0
PERBET DEFB 0
WOTPAT DEFB 0
NOALIS DEFB 0
REFILL LD A,(YOUHGT)
CP 0
JR NZ,PLYR2A
LD A,(YOUDIR)
CP 250
JR NC,PLYR2A
LD A,(PERAM1)
LD (AMMO11),A
LD A,(PERAM2)
LD (AMMO12),A
LD HL,#5840
LD A,(AMMO11)
CALL AMOLIN
IPLYR2A LD A,(CONTR2)
CP 4
RET Z
LD A,(TABADI)
CP 0
RET NZ
LD A,(PERAM1)
LD (AMMO21),A
LD A,(PERAM2)
LD (AMMO22),A
LD HL,#5840+28
LD A,(AMMO21)
CALL AMOLIN
RET
WHICHP DEFB 0
UNDER LD IX,YOUHGT
LD B,5
LUNDR PUSH BC
LD A,B
LD (WHICHP),A
LD A,(IX+0)
CP 4
JP NC,PLNNOG
LD A,(IX+2)
CP 193
JP NC,PLNNOG
CP 16
JP C,PLNNOG
LD HL,COLBUF-26
LD A,(IX+2)
ADD A,7
LD DE,26
AND 248
RRCA
RRCA
RRCA
LD B,A
INC B
JLYVAU ADD HL,DE
DJNZ LYVAU
LD A,(IX+1)
ADD A,7
AND 248
RRCA
RRCA
RRCA
LD E,A
LD D,0
ADD HL,DE
LD A,(HL)
CP 255
JR Z,PLNNOG
LD B,A
LD A,(IX+0)
INC B
CP B
JR C,KILPLN
ZKPLNNOG LD DE,13
ADD IX,DE
POP BC
DJNZ LUNDR
RET
KILPLN LD A,(IX+3)
CP 250
JR NC,PLNNOG
LD (IX+3),252
LD A,(WHICHP)
CP 5
JR Z,PLNNOG
LD HL,NOALIS
INC (HL)
JR PLNNOG
KRUDEAD LD A,(YOURY)
CP 0
JP NZ,NOTDE1
LD A,(LIVES1)
CP "1"
JR NZ,YURDE1
LD A,(TABADI+3)
CP 250
JR C,YURDE1
LD HL,LIVES2
DEC (HL)
JP YURDE1
RUDED2 LD A,(CONTR2)
CP 4
JP Z,GAMEL1
LD A,(TABADI+2)
CP 0
JP NZ,GAMEL1
LD A,(LIVES2)
CP "1"
JR NZ,YURDE2
LD A,(YOUDIR)
CP 250
JR C,YURDE2
LD HL,LIVES1
DEC (HL)
YURDE2 LD A,(LIVES2)
DEC A
LD (LIVES2),A
CP "0"
JP Z,GAMOVE
LD HL,(P1INIT+3)
LD (TABADI+1),HL
XOR A
LD (TABADI),A
LD (TABADI+3),A
LD A,(P1INIT+3+2)
LD (TABADI+4),A
LD HL,BONUS2
LD DE,BONUS2+1
LD BC,4
LD (HL),"0"
LDIR
LD A,(STAGE)
ADD A,48
LD (BONUS2+1),A
JP GAMEL1
YURDE1 LD A,(LIVES1)
DEC A
LD (LIVES1),A
CP "0"
JP Z,GAMOVE
LD IX,TABADI
LD B,4
LD C,0
LNOON LD A,(IX+2)
CP 0
JR Z,NOTACC
INC C
NOTACC LD DE,13
ADD IX,DE
DJNZ LNOON
LD A,(NOALIS)
ADD A,C
LD (NOALIS),A
LD HL,BONUS1
LD DE,BONUS1+1
LD BC,4
LD (HL),"0"
LDIR
LD A,(STAGE)
ADD A,48
LD (BONUS1+1),A
LD A,(CONTR2)
CP 4
JP Z,REBEGI
LD HL,(P1INIT)
LD (YOURX),HL
XOR A
LD (YOUHGT),A
LD (YOUDIR),A
LD A,(P1INIT+2)
LD (YOUDI2),A
JP NOTDE1
GAMOVE XOR A
LD (ENGONF),A
LD A,(TABADI+2)
CP 0
JR NZ,P1ONLY
LD HL,LIVES2
DEC (HL)
P1ONLY LD A,(CONTR2)
CP 4
JR NZ,JSR1
JSR2 CALL THEEND
JP GO
JSR1 LD A,(AWAR)
CP 1
JR NZ,JSR2
LD A,(STAGE)
CP 3
JR Z,JSR3
CALL ALLWGM
JP REBEG2
JSR3 CALL THEEND
CALL ALLWGM
JP GO
THEEND LD HL,#4800+10
LD DE,GAMOS1
LD A,79
LD (ATTRVL),A
LD B,12
CALL STRING
LD HL,#4820+10
LD B,12
CALL STRING
LD HL,#4840+10
LD DE,GAMOS1
LD B,12
CALL STRING
LD B,150
GOWAIT HALT
DJNZ GOWAIT
RET
SHADGE LD A,(FLICKR)
XOR 1
LD (FLICKR),A
LD HL,YOUHGT
LD DE,SHADOH
LD BC,4
LDIR
LD IX,YOUHGT
CALL CALCSH
LD A,(CONTR2)
CP 4
RET Z
LD A,(FLICKR)
CP 0
RET Z
LD HL,TABADI
LD DE,SHADOH
LD BC,4
LDIR
LD IX,TABADI
CALCSH LD A,(IX+0)
CP 0
RET Z
CP 1
RET Z
LD B,A
LD A,(IX+1)
LD C,2
CALCSL ADD A,C
DJNZ CALCSL
LD (SHADOX),A
RET
ALLWGM LD A,(LIVES1)
LD HL,LIVES2
CP (HL)
JR Z,SAME
JR C,P2PLUS
LD HL,P1WARS
INC (HL)
JR SAME
P2PLUS LD HL,P2WARS
INC (HL)
SAME CALL FADE
LD HL,60000
LD DE,60001
LD (HL),"#"
LD BC,23
LDIR
LD (HL),32
LD BC,24
LDIR
LD A,"&"
LD (60024),A
LD (60024+23),A
LD A,66
LD (ATTRVL),A
LD A,";"
LD (60000),A
LD A,"%"
LD (60023),A
LD HL,#4820+4
LD DE,60000
LD B,24
CALL STRING
LD A,"'"
LD (60000),A
LD A,")"
LD (60023),A
LD HL,#48E0+4
LD DE,60000
LD B,24
CALL STRING
LD B,5
LD HL,#4840+4
LPEDGE PUSH BC
PUSH HL
LD DE,60024
LD B,24
CALL STRING
POP HL
LD DE,32
ADD HL,DE
POP BC
DJNZ LPEDGE
LD A,70
LD (ATTRVL),A
LD DE,P1WINM
CALL PUTAMN
LD A,71
LD (ATTRVL),A
LD HL,#48A0+9
LD A,(P1WARS)
ADD A,48
CALL DISASC
LD HL,#48A0+21
LD A,(P2WARS)
ADD A,48
CALL DISASC
LD A,87
LD (ATTRVL),A
LD HL,#40E0+10
LD DE,P1WINM-24
LD B,12
CALL STRING
LD HL,#4800+10
LD B,12
CALL STRING
LD HL,STAGE
INC (HL)
LD A,"3"
LD (LIVES1),A
Games > Games by content > Games with uncompiled source code
Games > Games by developer > Games developed by Amazing Games
Games > Games by platform > ZX Spectrum games
Games > Games by publisher
Games > Games by publisher > Games published by Electronic Arts > Games published by Codemasters
Games > Games by release date > Games released in 1989
