General info for: Crusoe
Also known as:
The Life and Adventures of Crusoe
Original Release Year:
Original Publisher:
Jon Smith
Message Language:
Machine Type:
ZX-Spectrum 48K
Maximum Players:
Original Price:
Known Errors:
Bugfix provided by Battle Bunny:
  • The game crashes frequently. Most of the errors are due to JPs being one or two bytes off their correct destination. The most significant error was the machine stack overflow, caused by indirect recursive sub-routine calls, which would cause the program to crash if Crusoe did a lot of moving back & forth between map sections and had to use his "Elyxr" frequently. There were some minor errors in the keyboard checking, command handler search and message display. Also the LLL option to load a saved game messed up the stack and the QQQ/TIUQ option to restart didn't work properly (although that was due to the stack being messed up by other things). Fixed using the following patch:
            org  $6A9C               ; patch indicator: stone head as prompt terminator
    DEFB $A2 ; 6A9C A2

    org $6BEC ; jump correction
    JP $6A2D ; 6BEC C3 2D 6A

    org $71DE ; typo correction
    DEFM "A ladder " ; 71DE 41 20 6C 61 64 64 65 72 20 20 20 20

    org $7AE8 ; jump correction
    DJNZ $7AE7 ; 7AE8 10 FD

    org $80E5 ; jump correction
    JR $8149 ; 80E5 18 62
    org $82BB ; jump correction
    JP NZ, $82E2 ; 82BB C2 E2 82
    org $8401 ; jump correction
    JP NZ, $82CD ; 8401 C2 CD 82
    org $8736 ; jump correction
    JR $8706 ; 8736 18 CE

    org $8F86 ; jump correction
    JP $87CC ; 8F86 C3 CC 87
    org $970C ; jump correction
    JP NZ, $87CC ; 970C C2 CC 87

    org $B6F8 ; jump correction
    JR Z, $B71D ; B6F8 28 23
    org $B705 ; jump correction
    JR Z, $B71D ; B705 28 16
    org $B70B ; jump correction
    JR Z, $B71D ; B70B 28 10

    org $A84D ; message address correction
    LD A, $5D ; A84D 3E 5D

    org $84F2 ; check RET address before JP back
    JP PATCH ; 84F2 C3 F6 B8
    org $B498
    JP PATCH ; B498 C3 F6 B8
    org $CA86
    JP PATCH ; CA86 C3 F6 B8

    org $B8F6 ; drop all except RET to BASIC
    PATCH: POP BC ; B8F6 C1
    LD HL, $2D2B ; B8F7 21 2B 2D
    AND A ; B8FA A7
    SBC HL, BC ; B8FB ED 42
    JR NZ, PATCH ; B8FD 20 F7
    PUSH BC ; B8FF C5
    JP $61AE ; B900 C3 AE 61

Modified "BUGFIX" file provided by Einar Saukas.
Original WoS Score:
5.57 (7 votes)

Crusoe screenshot screenshot

RZX Archive / Youtube
Speccy Screenshot Maps
License Information
Name: Daniel Defoe
Type: Book
Original Name: Robinson Crusoe

no team
Compilations featuring this title
Release Year: 1985
Release Year: 2015

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