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DOS Wedge
The DOS Wedge is a piece of Commodore 64 system software that was popular in its time. It was written by Bob Fairbairn, and was included by Commodore (CBM) on the 1541 disk drive Test/Demo Disk (filename: "DOS 5.1") and also packaged with the C64 Macro Assembler (filename: "DOS WEDGE64"). The DOS Wedge was referred to in the 1541 drive manual as DOS Support and on the software startup screen as DOS MANAGER. The original design was developed by Bill Seiler. The Wedge made disk operations in BASIC 2.0 significantly easier by introducing several keyword shortcuts. The DOS Wedge became somewhat of a de facto standard, with third-party vendors such as Epyx often incorporating identical commands into fastloader cartridges and other Commodore 64 expansion devices. '' COMPUTE!'s Gazette'' published several type-in variations on the DOS Wedge, including a C128 version in its February 1987 issue (see External links, below). The original Commodore DOS Wedge was a 1- KB program written ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commodore International
Commodore International Corporation was a home computer and electronics manufacturer with its head office in The Bahamas and its executive office in the United States founded in 1976 by Jack Tramiel and Irving Gould. It was the successor company to Commodore Business Machines (Canada) Ltd., established in 1958 by Tramiel and Manfred Kapp. Commodore International (CI), along with its U.S. subsidiary Commodore Business Machines, Inc. (CBM), was a significant participant in the development of the home computer industry, and at one point in the 1980s was the world's largest in the industry. The company released its first home computer, the Commodore PET, in 1977; it was followed by the VIC-20, the first ever computer to reach one million units of sales. In 1982, the company developed and marketed the world's best selling computer, the Commodore 64; its success made Commodore one of the world's largest personal computer manufacturers, with sales peaking in the last quarter of 1983 at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epyx
Epyx, Inc. was a video game developer and video game publisher active in the late 1970s and 1980s. The company was founded in 1978 as Automated Simulations by Jim Connelley and Jon Freeman, publishing a series of tactical combat games. The Epyx brand was introduced when the company branched out to a series of more action-oriented titles. In 1983, as these types of games now represented the majority of their product line, the company was renamed to match. Epyx published a long series of games through the 1980s. The company's assets are currently owned by Bridgestone Multimedia Group Global. History Formation In 1977, Susan Lee-Merrow invited Jon Freeman to join a ''Dungeons & Dragons'' game hosted by Jim Connelley and Jeff Johnson. Connelley later purchased a Commodore PET computer to help with the bookkeeping involved in being a dungeon master, and he came up with the idea of writing a computer game for the machine before the end of the year so he could write it off on his tax ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commodore 64 Software
The Commodore 64 amassed a large software library of nearly 10,000 commercial titles, covering genres from games to business applications. Applications, utility, and business software The Commodore 64’s slow 1541 disk drive limited its suitability as a business computer, yet it was used for tasks like graphics creation, desktop publishing, and word processing. '' Info 64'', the first magazine produced using desktop publishing tools, was created on and dedicated to the Commodore platform. Popular graphics software included KoalaPainter, known for its graphics tablet interface, and Doodle!, a widely used drawing program. Desktop publishing tools like The Print Shop and "The Newsroom" enabled users to create signs, banners, and newsletters. Light pens and CAD software were also available. Word processors such as PaperClip and Vizawrite were popular, alongside the type-in program SpeedScript, published in '' Compute!'s Gazette''. Spreadsheet programs included Multiplan by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
COMPUTE!
''Compute!'' (), often stylized as ''COMPUTE!'', is an American home computer magazine that was published from 1979 to 1994. Its origins can be traced to 1978 in Len Lindsay's ''PET Gazette'', one of the first magazines for the Commodore PET. In its 1980s heyday, ''Compute!'' covered all major platforms, and several single-platform spinoffs of the magazine were launched. The most successful of these was '' Compute!'s Gazette'', which catered to VIC-20, Commodore 64, and later the Commodore 128 computer users. Compute! printed type-in programs for games, utilties, and applications, usually in BASIC. Often there were multiple versions for different computers. Sometimes programs were provided as lists of numbers representing a machine language program, to be typed in a utility called MLX. History ''Compute!'' original goal was to write about and publish programs for all of the computers that used some version of the MOS Technology 6502 CPU. It started out in 1979. ABC Publi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jim Butterfield
Frank James Butterfield (14 February 1936 – 29 June 2007), was a Canadian computer programmer, author, and television personality known for his work with early microcomputers. He is particularly noted for associations with Commodore Business Machines and the Toronto PET Users Group, for many books and articles on machine language programming, and for educational videos and TV programs. Early life and career Jim Butterfield was born on 14 February 1936 in Ponoka, Alberta, Ponoka, Alberta, which is south of Edmonton. He was the third of four children to James and Nancy Butterfield, who had emigrated from England to farm. In 1953 he won a French scholarship to the Banff School of Fine Arts. He later attended the University of Alberta and the University of British Columbia but dropped out due to lack of interest. One of his first jobs was radio continuity writing in Alberta. In 1957, Butterfield began working for Canadian National/Canadian Pacific Telecommunications, at first a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comparison Of Command Shells
This article catalogs comparable aspects of notable operating system shell (computing), shells. General characteristics {, class="wikitable sortable sticky-header sort-under" style="width: auto; text-align: center; font-size: smaller;" , - !Shell ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! , - !Thompson shell , Unix, UNIX , sh , 1971 , , Unix, UNIX , Unix, UNIX , , , Text-based Command-line interface, CLI , , , , , , , , , , , - !Bourne shell 1977 version , Version 7 Unix, 7th Ed. UNIX , sh , 1977 , , Version 7 Unix, 7th Ed. UNIX , Version 7 Unix, 7th Ed. UNIX, , , , Text-based Command-line interface, CLI , , , , , , , , , , , - !Bourne shell current version , Various Unix, UNIX , sh , 1977 , , SunOS-5.x, FreeBSD , SunOS-5.x , , , Text-based Command-line interface, CLI , , Since mid 1990s. , , , , , , , if compiled with -DACCT. , , - !POSIX shell , POSIX , sh , 1992 , , , POSIX , , , Text-based CLI , , , , , , , {{small, Unspecifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subroutine
In computer programming, a function (also procedure, method, subroutine, routine, or subprogram) is a callable unit of software logic that has a well-defined interface and behavior and can be invoked multiple times. Callable units provide a powerful programming tool. The primary purpose is to allow for the decomposition of a large and/or complicated problem into chunks that have relatively low cognitive load and to assign the chunks meaningful names (unless they are anonymous). Judicious application can reduce the cost of developing and maintaining software, while increasing its quality and reliability. Callable units are present at multiple levels of abstraction in the programming environment. For example, a programmer may write a function in source code that is compiled to machine code that implements similar semantics. There is a callable unit in the source code and an associated one in the machine code, but they are different kinds of callable units with different impl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hexadecimal
Hexadecimal (also known as base-16 or simply hex) is a Numeral system#Positional systems in detail, positional numeral system that represents numbers using a radix (base) of sixteen. Unlike the decimal system representing numbers using ten symbols, hexadecimal uses sixteen distinct symbols, most often the symbols "0"–"9" to represent values 0 to 9 and "A"–"F" to represent values from ten to fifteen. Software developers and system designers widely use hexadecimal numbers because they provide a convenient representation of binary code, binary-coded values. Each hexadecimal digit represents four bits (binary digits), also known as a nibble (or nybble). For example, an 8-bit byte is two hexadecimal digits and its value can be written as to in hexadecimal. In mathematics, a subscript is typically used to specify the base. For example, the decimal value would be expressed in hexadecimal as . In programming, several notations denote hexadecimal numbers, usually involving a prefi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kilobyte
The kilobyte is a multiple of the unit byte for Computer data storage, digital information. The International System of Units (SI) defines the prefix ''kilo-, kilo'' as a multiplication factor of 1000 (103); therefore, one kilobyte is 1000 bytes.International Standard IEC 80000-13 Quantities and Units – Part 13: Information science and technology, International Electrotechnical Commission (2008). The internationally recommended unit symbol for the kilobyte is kB. In some areas of information technology, particularly in reference to random-access memory capacity, ''kilobyte'' instead often refers to 1024 (210) bytes. This arises from the prevalence of sizes that are powers of two in modern digital memory architectures, coupled with the coincidence that 210 differs from 103 by less than 2.5%. The kibibyte is defined as 1024 bytes, avoiding the ambiguity issues of the ''kilobyte''.International Standard IEC 80000-13 Quantities and Units – Part 13: Information scien ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commodore 128
The Commodore 128, also known as the C128, is the last 8-bit home computer that was commercially released by Commodore Business Machines (CBM). Introduced in January 1985 at the CES in Las Vegas, it appeared three years after its predecessor, the Commodore 64, the bestselling computer of the 1980s. Approximately 2.5 million C128s were sold during its four-year production run. The C128 is a significantly expanded successor to the C64, with nearly full compatibility. It is housed in a redesigned case with an improved keyboard including a numeric keypad and function keys. Memory was enlarged to 128 KB of RAM in two 64 KB banks. A separate graphics chip provided 80-column color video output in addition to the original C64 modes. It also included a Zilog Z80 CPU which allows the C128 to run CP/M, as an alternative to the usual Commodore BASIC environment. The huge CP/M software library, coupled with the C64's software library, gave the C128 one of the broadest ranges ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type-in Program
A type-in program or type-in listing was computer source code printed in a home computer magazine or book. It was meant to be entered via the keyboard by the reader and then saved to cassette tape or floppy disk. The result was a usable game, utility, or application program. Type-in programs were common in the home computer era from the late 1970s through the early 1990s, when the RAM of 8-bit systems was measured in kilobytes and most computer owners did not have access to networks such as bulletin board systems. Magazines such as ''Softalk'', ''Compute!'', '' ANALOG Computing'', and ''Ahoy!'' dedicated much of each issue to type-in programs. The magazines could contain multiple games or other programs for a fraction of the cost of purchasing commercial software on removable media, but the user had to spend up to several hours typing each one in. Most listings were either in a system-specific BASIC dialect or machine code. Machine code programs were long lists of decimal or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
