Beatle Quest at Spectrum Computing - Sinclair ZX Spectrum games, software and hardware

General info for: Beatle Quest [#ID: 5994]

Title:

Beatle Quest

Release Date:

1985

Original Publisher:

Number 9 Software (UK)

Creators:

Garry Marsh (UK)

Authored with:

The Quill Adventure System

Availability:

Available

Message Language:

English

Machine Type:

ZX-Spectrum 48K

Genre:

Adventure Game: Text/Illustrated

Maximum Players:

Features:

Multi-machine Medium
Split-screen pics/text

Original Price:

£9.95

Other platforms:

Commodore 64

Average mag. score:

47.50% (4 reviews)

Known Errors:

Bugfix provided by Einar Saukas and Bandit:

The game cannot be completed because of a bug which prevents the gun being discovered in the circus. The problem is that it was originally written for a "Quill A" database but converted to a "Quill C" database (presumably so that it could include Illustrator graphics). The gun discovery sequence is controlled by flag 28, which is reset every turn since it became a reserved flag in "Quill C". This problem can be solved reusing flag 21 (that controls finding the jar) for the gun also, since the jar is a requirement for accessing the gun location. Both cases are originally implemented as follows:

7a18: GET JAR:
7482:          AT      112         ;at location 112?
7484:          EQ       21    1    ;flag 21=1?
7488:          MESSAGE  99         ;"Sorry, but you've had your quota of miracles."
748a:          DONE

7a1c: GET JAR:
748c:          AT      112         ;at location 112?
748e:          ZERO     21         ;flag 21=0?
7491:          CREATE   12         ;create jar
7493:          GET      12         ;get jar
7495:          PLUS     21    1    ;set flag 21=1
7498:          PLUS     30    3    ;increase score
749b:          MESSAGE  98         ;"Miraculously, your wish is granted."
749d:          DONE

7830: EXAM DROP:
6f8a:          AT      127         ;at location 127?
6f8c:          EQ       28   31    ;flag 28=31?
6f90:          MESSAGE  31         ;"You find nothing of interest."

7834: EXAM DROP:
6f93:          AT      127         ;at location 127?
6f95:          EQ       28   30    ;flag 28=30?
6f99:          PLUS     28    1    ;set flag 28=31
6f9c:          CREATE   30         ;create gun
6f9e:          PLUS     30    3    ;increase score
6fa1:          DESC                ;describe

7838: EXAM DROP:
6fa3:          AT      127         ;at location 127?
6fa5:          ZERO     28         ;flag 28=0?
6fa8:          PLUS     28   30    ;set flag 28=30
6fab:          PLUS     30    3    ;increase score
6fae:          MESSAGE 195         ;"Very smelly and full of lumps."

The following patch fixes this problem:

7a18: GET JAR:
7482:          AT      112
7484:          GT       21    0    ;POKE 29828,14:POKE 29830,0
7488:          MESSAGE  99
748a:          DONE

7a1c: GET JAR:
748c:          AT      112
748e:          ZERO     21
7491:          CREATE   12
7493:          GET      12
7495:          PLUS     21    1
7498:          PLUS     30    3
749b:          MESSAGE  98
749d:          DONE

7830: EXAM DROP:
6f8a:          AT      127
6f8c:          EQ       21  254    ;POKE 28557,21:POKE 28558,254
6f90:          MESSAGE  31

7834: EXAM DROP:
6f93:          AT      127
6f95:          EQ       21  255    ;POKE 28566,21:POKE 28567,255
6f99:          MINUS    21    1    ;POKE 28569,34:POKE 28570,21
6f9c:          CREATE   30
6f9e:          PLUS     30    3
6fa1:          DESC

7838: EXAM DROP:
6fa3:          AT      127
6fa5:          LT       21    2    ;POKE 28581,15:POKE 28582,21:POKE 28583,2
6fa9:          SET      21         ;POKE 28584,255:POKE 28585,31:POKE 28586,21
6fab:          PLUS     30    3
6fae:          MESSAGE 195

Modified "BUGFIX" file provided by Einar Saukas.

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