Copyright (c) 1996-2011 Glen Summers and contributors.
Contributions from David Kinder, Alan Staniforth, Simon Baldwin, Dieter Baron, Andreas Scherrer and Stefano Bodrato.
Level9 is released under the terms of the GNU General Public License. See the file COPYING that is included with this program for details.
Level 9 wrote their games using a custom designed system known as
From disassembly of Level 9 games there are thought to be four variants of A-Code, which are detailed below, and all of which are supported by this interpreter. Thanks go to Paul David Doherty for analysing the games and producing the table which follows.
|v1||This was used for the earliest games. Spectrum v1 games had black text on a grey background. Games known to be released in this format:|
|Lords of Time|
|v2||These releases were made between 1984 and 1985 (and usually say so in the initial copyright message). This version introduced the yellow text on a black background which became standard. Games in this format were:|
|Lords of Time|
|Return to Eden|
|Erik the Viking|
|v3||This format, dated 1986, was used by the largest number of releases. These were:|
|Worm in Paradise|
|The Price of Magick|
|The Secret Diary of Adrian Mole|
|The Growing Pains of Adrian Mole|
|The Jewels of Darkness Trilogy (Colossal Adventure, Adventure Quest and Dungeon Adventure released as one package)|
|The Silicon Dreams Trilogy (Snowball, Return to Eden and Worm in Paradise)|
|v4||This was used for the Time and Magick Trilogy (Lords of Time, Red Moon and The Price of Magick), and all Level 9's new games from 1987 onwards:|