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Compute Magazine
''Compute!'' (), often stylized as ''COMPUTE!'', was 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 computer. 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 and Commodore 64 computer users. History ''Compute!''s 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 with the Commodore PET, VIC-20, Atari 400/800, Apple II+, and some 6502-based computers one could build from kits, such as the Rockwell AIM 65, the KIM-1 by MOS Technology, and others from companies such as Ohio Scientific. Coverage of the kit computers and the Commodore PET were eventually dropped. The plat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laser Chess
Laser Chess is a two-player, strategy video game from 1987, modeled as a board game with chess-like pieces, most of which have mirrored surfaces, and one of which is a laser cannon. ''Laser Chess'' first appeared in ''Compute!'s Atari ST Disk & Magazine'' in 1987, written in Modula-2, winning the $5,000 first prize in a programming competition held by the magazine. Ports of the game written in BASIC and machine language were published in the June 1987 issue of ''Compute!'' for the Amiga, Commodore 64, Apple II, and Atari 8-bit family as type-in programs. ''Laser Chess'' has been re-implemented many times over the years, including a variant ''Advanced Laser Chess'' with a larger board and additional pieces, or the new variant "LASER CHESS: Deflection" bringing a level editor, more and more pieces like portals available on Steam. Gameplay Players take alternate turns taking two actions with their pieces. An action consists of moving a piece vertically or laterally, rotating a piec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Texas Instruments TI-99/4A
The TI-99/4 and TI-99/4A are home computers released by Texas Instruments in 1979 and 1981, respectively. Based on the Texas Instruments TMS9900 microprocessor originally used in minicomputers, the TI-99/4 was the first 16-bit home computer. The associated video display controller provides color graphics and sprite support which were only comparable with those of the Atari 400 and 800 released a month after the TI-99/4. The calculator-style keyboard of the TI-99/4 was cited as a weak point, and TI's reliance on ROM cartridges and their practice of limiting developer information to select third parties resulted in a lack of software for the system. The TI-99/4A was released in June 1981 to address some of these issues with a simplified internal design, full-travel keyboard, improved graphics, and a unique expansion system. At half the price of the original model, sales picked up significantly and TI supported the 4A with peripherals, including a speech synthesizer and a "Perip ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SpeedScript
SpeedScript is a word processor originally printed as a type-in MLX machine language listing in 1984-85 issues of ''Compute!'' and ''Compute!'s Gazette'' magazines. Approximately 5 KB in length, it provided many of the same features as commercial word processing packages of the 8-bit era, such as PaperClip and Bank Street Writer. Versions were published for the Apple II, Commodore 64 and 128, Atari 8-bit family, VIC-20, and MS-DOS. Versions In April 1983 ''Compute!'' published Scriptor, a word processor written by staff writer Charles Brannon in BASIC and assembly language, as a type-in program for the Atari 8-bit family. In January 1984 version 1.0 of his new word processor SpeedScript appeared in ''Compute!'s Gazette'' for the Commodore 64 and VIC-20. 1.1 appeared in ''Compute!'s Second Book of Commodore 64'', 2.0 on ''Gazette Disk'' in May 1984, and 3.0 in ''Compute!'' in March and April 1985. Corrections that updated 3.0 to 3.1 appeared in May 1985, and the full 3.1 ve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MLX (software)
MLX is a series of machine language entry utilities published by the magazines ''COMPUTE!'' and ''COMPUTE!'s Gazette'', as well as books from COMPUTE! Publications. These programs were designed to allow relatively easy entry of the type-in machine language listings that were often included in these publications. Versions were available for the Commodore 64, VIC-20, Atari 8-bit family, and Apple II. MLX listings were reserved for relatively long machine language programs such as SpeedScript, some high-performance utilities, and fast-paced games. First version MLX was introduced in the December 1983 issue of ''COMPUTE!'' for the Commodore 64 and Atari 8-bit family (necessary to input the Atari gamChopperoidson Pg 122), and simultaneously in the December 1983 issue of ''COMPUTE!'s Gazette'' to be used for the entry of two C-64 machine language games, the excellenSpike(Pg 74) and the competitivSpace Duel(Pg 80). This was followed by a version in the January 1984 issue of ''COMPU ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BASIC Loader
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 he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Main Memory
Computer data storage is a technology consisting of computer components and recording media that are used to retain digital data. It is a core function and fundamental component of computers. The central processing unit (CPU) of a computer is what manipulates data by performing computations. In practice, almost all computers use a storage hierarchy, which puts fast but expensive and small storage options close to the CPU and slower but less expensive and larger options further away. Generally, the fast volatile technologies (which lose data when off power) are referred to as "memory", while slower persistent technologies are referred to as "storage". Even the first computer designs, Charles Babbage's Analytical Engine and Percy Ludgate's Analytical Machine, clearly distinguished between processing and memory (Babbage stored numbers as rotations of gears, while Ludgate stored numbers as displacements of rods in shuttles). This distinction was extended in the Von Neumann arch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PEEK And POKE
In computing, PEEK and POKE are commands used in some high-level programming languages for accessing the contents of a specific memory cell referenced by its memory address. PEEK gets the byte located at the specified memory address. POKE sets the memory byte at the specified address. These commands originated with machine code monitors such as the DECsystem-10 monitor; these commands are particularly associated with the BASIC programming language, though some other languages such as Pascal and COMAL also have these commands. These commands are comparable in their roles to pointers in the C language and some other programming languages. One of the earliest references to these commands in BASIC, if not the earliest, is in Altair BASIC. DIM W% 4 : REM reserve 4 bytes of memory, pointed to by integer variable W% > ?W% = 42 : REM store constant 42; equivalent of 'POKE W%, 42' > PRINT ?W% : REM print the byte pointed to by W%; equivalent of 'PRINT PEEK(W%)' 42 32-bit va ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hexadecimal
In mathematics and computing, the hexadecimal (also base-16 or simply hex) numeral system is a positional numeral system that represents numbers using a radix (base) of 16. Unlike the decimal system representing numbers using 10 symbols, hexadecimal uses 16 distinct symbols, most often the symbols "0"–"9" to represent values 0 to 9, and "A"–"F" (or alternatively "a"–"f") to represent values from 10 to 15. Software developers and system designers widely use hexadecimal numbers because they provide a human-friendly representation of binary-coded values. Each hexadecimal digit represents four bits (binary digits), also known as a nibble (or nybble). For example, an 8-bit byte can have values ranging from 00000000 to 11111111 in binary form, which can be conveniently represented as 00 to FF 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, a number of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Video Game
Video games, also known as computer games, are electronic games that involves interaction with a user interface or input device such as a joystick, controller, keyboard, or motion sensing device to generate visual feedback. This feedback mostly commonly is shown on a video display device, such as a TV set, monitor, touchscreen, or virtual reality headset. Some computer games do not always depend on a graphics display, for example text adventure games and computer chess can be played through teletype printers. Video games are often augmented with audio feedback delivered through speakers or headphones, and sometimes with other types of feedback, including haptic technology. Video games are defined based on their platform, which include arcade video games, console games, and personal computer (PC) games. More recently, the industry has expanded onto mobile gaming through smartphones and tablet computers, virtual and augmented reality systems, and remote c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Machine Code
In computer programming, machine code is any low-level programming language, consisting of machine language instructions, which are used to control a computer's central processing unit (CPU). Each instruction causes the CPU to perform a very specific task, such as a load, a store, a jump, or an arithmetic logic unit (ALU) operation on one or more units of data in the CPU's registers or memory. Early CPUs had specific machine code that might break backwards compatibility with each new CPU released. The notion of an instruction set architecture (ISA) defines and specifies the behavior and encoding in memory of the instruction set of the system, without specifying its exact implementation. This acts as an abstraction layer, enabling compatibility within the same family of CPUs, so that machine code written or generated according to the ISA for the family will run on all CPUs in the family, including future CPUs. In general, each architecture family (e.g. x86, ARM) has its own ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BASIC
BASIC (Beginners' All-purpose Symbolic Instruction Code) is a family of general-purpose, high-level programming languages designed for ease of use. The original version was created by John G. Kemeny and Thomas E. Kurtz at Dartmouth College in 1963. They wanted to enable students in non-scientific fields to use computers. At the time, nearly all computers required writing custom software, which only scientists and mathematicians tended to learn. In addition to the program language, Kemeny and Kurtz developed the Dartmouth Time Sharing System (DTSS), which allowed multiple users to edit and run BASIC programs simultaneously on remote terminals. This general model became very popular on minicomputer systems like the PDP-11 and Data General Nova in the late 1960s and early 1970s. Hewlett-Packard produced an entire computer line for this method of operation, introducing the HP2000 series in the late 1960s and continuing sales into the 1980s. Many early video games trace their ... [...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 o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
