|
Z-machine
The Z-machine is a virtual machine that was developed by Joel Berez and Marc Blank in 1979 and used by Infocom for its text adventure games. Infocom compiled game code to files containing Z-machine instructions (called story files or Z-code files) and could therefore port its text adventures to a new platform simply by writing a Z-machine implementation for that platform. With the large number of incompatible home computer systems in use at the time, this was an important advantage over using native code or developing a compiler for each system. History and design Nomenclature and conventions The "Z" of Z-machine stands for ''Zork'', Infocom's first adventure game. Infocom used file extensions of .dat (Data) and .zip (ZIP = Z-machine Interpreter Program), but the latter clashed with the widespread use of .zip for PKZIP-compatible archive files starting in the 1990s, after Activision had closed Infocom. Infocom produced six versions of the Z-machine. Files using versions 1 a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Infocom
Infocom, Inc., was an American software company based in Cambridge, Massachusetts, that produced numerous works of interactive fiction. They also produced a business application, a relational database called ''Cornerstone (software), Cornerstone''. Infocom was founded on June 22, 1979, by staff and students of Massachusetts Institute of Technology, and lasted as an independent company until 1986, when it was bought by Activision. Activision shut down the Infocom division in 1989, although they released some titles in the 1990s under the Infocom ''Zork'' brand. Activision abandoned the Infocom trademark in 2002. Overview Infocom games are interactive fiction, text adventures where users direct the action by entering short strings of words to give commands when prompted. Generally the program will respond by describing the results of the action, often the contents of a room if the player has moved within the virtual world. The user reads this information, decides what to do, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Interactive Fiction
Interactive fiction (IF) is software simulating environments in which players use text Command (computing), commands to control Player character, characters and influence the environment. Works in this form can be understood as literary narratives, either in the form of Interactive narratives or Interactive narrations. These works can also be understood as a form of video game, either in the form of an adventure game or role-playing video game, role-playing game. In common usage, the term refers to text adventures, a type of adventure game where the entire interface can be "Text mode, text-only", however, graphical text adventure games, where the text is accompanied by graphics (still images, animations or video) still fall under the text adventure category if the main way to interact with the game is by typing text. Some users of the term distinguish between interactive fiction, known as "Puzzle-free", that focuses on narrative, and "text adventures" that focus on puzzles. Due ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quetzal File Format
Quetzal is a standardised file format for the saved state of Z-machine games, invented by Martin Frost. Prior to the introduction of Quetzal, each Z-machine interpreter saved games in its own format; Quetzal enabled players to save a game using one interpreter and restore it with another. Use of the format is strongly recommended in Graham Nelson's Z-machine standards document, but not obligatory. Most modern Z-machine interpreters have the ability to save Quetzal files. The files are IFF files with a FORM of "IFZS" (presumably standing for "Interactive Fiction Z-machine Save"), although the saved files are commonly given an extension of ".sav": less commonly sighted are "quz" and "qtz". Despite the reference to the Z-machine in the FORM code, the format has proved flexible enough to be adapted for at least one alternative architecture, Glulx. The magic-number reading of the files are often shown as: 'IFF data, Z-machine or Glulx saved game file (Quetzal)' A backronym A ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inform
Inform is a programming language and design system for interactive fiction originally created in 1993 by Graham Nelson. Inform can generate programs designed for the Z-machine, Z-code or Glulx virtual machines. Versions 1 through 5 were released between 1993 and 1996. Around 1996, Nelson rewrote Inform from first principles to create version 6 (or Inform 6). Over the following decade, version 6 became reasonably stable and a popular language for writing interactive fiction. In 2006, Nelson released Inform 7 (briefly known as Natural Inform), a completely new language Natural language programming, based on principles of natural language and a new set of tools based around a book-publishing metaphor. Z-Machine and Glulx The Inform compilers translate Inform code to story files for Glulx or Z-machine, Z-code, two virtual machines designed specifically for interactive fiction. Glulx, which can support larger games, is the default. The Z-machine was originally developed by Infocom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blorb
Blorb is a package format for interactive fiction games. Many such games incorporate resources such as sound effects, music, or pictures. Blorb's purpose is to bind these together into one file. The format was devised by Andrew Plotkin and is used in both the Z-machine and Glulx virtual machines, as well as by the Glk library. Concept In the days when games were distributed only on disk, there was no problem in associating a game with its resources: the resources were simply shipped on the same disk. Since all Z-machine games were produced by Infocom, there was also no chance that resources would be shipped in a format which a user's interpreter program could not handle. Blorb is needed because neither of these assumptions hold true in modern times: games are typically downloaded as single files, and a user may be using any of a large number of interpreters. A Blorb file may optionally include the executable code of the game itself. This allows authors of modern games to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glulx
Glulx is a 32-bit portable virtual machine intended for writing and playing interactive fiction. It was designed by Andrew Plotkin to relieve some of the restrictions in the venerable Z-machine format. For example, because the Z-machine uses 16-bit integers its RAM is limited to 64KB, while Glulx natively supports 32-bit integers and has a 32-bit address space, allowing gigabytes of memory. Glulx programs typically use the Glk API for input and output. In recent years Glulx has overtaken the Z-machine in terms of published works in each format. Compilers and interpreters The Inform compiler, starting with version 6.30, can produce either Z-machine or Glulx story files. A Spanish interactive fiction development system called Superglús also uses Glulx. The reference interpreter is Andrew Plotkin's Glulxe, but the Git interpreter is often used as it is somewhat faster. There is also a JavaScript interpreter called Quixe. File and MIME types The MIME type for Glulx is "applica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zork
''Zork'' is a text adventure game first released in 1977 by developers Tim Anderson (programmer), Tim Anderson, Marc Blank, Bruce Daniels, and Dave Lebling for the PDP-10 mainframe computer. The original developers and others, as the company Infocom, expanded and split the game into three titles''ZorkI: The Great Underground Empire'', ''ZorkII: The Wizard of Frobozz'', and ''ZorkIII: The Dungeon Master''which were released commercially for a range of personal computers beginning in 1980. In ''Zork'', the player explores the abandoned Great Underground Empire in search of treasure. The player moves between the game's hundreds of locations and interacts with objects by typing commands in natural language processing, natural language that the game interprets. The program acts as a narrator, describing the player's location and the results of the player's commands. It has been described as the most famous piece of interactive fiction. The original game, developed between 1977 and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MDL (programming Language)
MDL (Model Development Language, or colloquially also referred to as More Datatypes than Lisp or MIT Design Language) is a programming language, a descendant of the language Lisp. Its initial purpose was to provide high-level programming language support for the Dynamic Modeling Group at Massachusetts Institute of Technology's (MIT) Project MAC. It was developed in 1971 on a PDP-10 running ITS and later ran on TENEX, TOPS-20, Markdown/HTML transcription BSD, and AEGIS. The initial development team consisted of Gerald Sussman and Carl Hewitt of the Artificial Intelligence Lab, and Chris Reeve, Bruce Daniels, and David Cressey of the Dynamic Modeling Group. Later, Stu Galley, also of the Dynamic Modeling Group, wrote the MDL documentation. MDL was initially called ''Muddle''. This style of self-deprecating humor was not widely understood or appreciated outside of Project MAC. So the name was sanitized to MDL. MDL provides several enhancements to classic Lisp. It support ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Graham Nelson
Graham A. Nelson (born 1968) is a British mathematician, poet, and the creator of the Inform, Inform design system for creating interactive fiction (IF) games. He has authored several IF games, including ''Curses (computer game), Curses'' (1993) and ''Jigsaw (computer game), Jigsaw'' (1995). Education In 1994, Nelson received a Ph.D. in mathematics from the University of Oxford under the supervision of Simon Donaldson. Writing Nelson co-edited ''Oxford Poetry'' and in 1997 received an Eric Gregory Award from the Society of Authors for his poetry. he was managing editor of Legenda, the imprint of the Modern Humanities Research Association (Modern Humanities Research Association, MHRA). Interactive fiction Nelson is the creator of the Inform, Inform design system for creating interactive fiction (IF) games. He has also authored several IF games, including ''Curses (computer game), Curses'' (1993) and ''Jigsaw (computer game), Jigsaw'' (1995), using the experience of writing ''Cur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ZIP File Format
ZIP is an archive file format that supports lossless data compression. A ZIP file may contain one or more files or directories that may have been compressed. The ZIP file format permits a number of compression algorithms, though DEFLATE is the most common. This format was originally created in 1989 and was first implemented in PKWARE, Inc.'s PKZIP utility, as a replacement for the previous ARC compression format by Thom Henderson. The ZIP format was then quickly supported by many software utilities other than PKZIP. Microsoft has included built-in ZIP support (under the name "compressed folders") in versions of Microsoft Windows since 1998 via the "Plus! 98" addon for Windows 98. Native support was added as of the year 2000 in Windows ME. Apple has included built-in ZIP support in Mac OS X 10.3 (via BOMArchiveHelper, now Archive Utility) and later. Most free operating systems have built in support for ZIP in similar manners to Windows and macOS. ZIP files gene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Word (computer Architecture)
In computing, a word is any processor design's natural unit of data. A word is a fixed-sized datum handled as a unit by the instruction set or the hardware of the processor. The number of bits or digits in a word (the ''word size'', ''word width'', or ''word length'') is an important characteristic of any specific processor design or computer architecture. The size of a word is reflected in many aspects of a computer's structure and operation; the majority of the registers in a processor are usually word-sized and the largest datum that can be transferred to and from the working memory in a single operation is a word in many (not all) architectures. The largest possible address size, used to designate a location in memory, is typically a hardware word (here, "hardware word" means the full-sized natural word of the processor, as opposed to any other definition used). Documentation for older computers with fixed word size commonly states memory sizes in words rather than bytes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virtual Machine
In computing, a virtual machine (VM) is the virtualization or emulator, emulation of a computer system. Virtual machines are based on computer architectures and provide the functionality of a physical computer. Their implementations may involve specialized hardware, software, or a combination of the two. Virtual machines differ and are organized by their function, shown here: * ''System virtual machines'' (also called full virtualization VMs, or SysVMs) provide a substitute for a real machine. They provide the functionality needed to execute entire operating systems. A hypervisor uses native code, native execution to share and manage hardware, allowing for multiple environments that are isolated from one another yet exist on the same physical machine. Modern hypervisors use hardware-assisted virtualization, with virtualization-specific hardware features on the host CPUs providing assistance to hypervisors. * ''Process virtual machines'' are designed to execute computer programs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
