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QBasic is an integrated development environment (IDE) and interpreter for a variety of dialects of BASIC which are based on QuickBASIC. Code entered into the IDE is compiled to an intermediate representation (IR), and this IR is immediately executed on demand within the IDE.
A subset of QuickBASIC 4.5, named QBasic, was included with MS-DOS 5 and later versions, replacing the GW-BASIC included with previous versions of MS-DOS. Compared to QuickBASIC, QBasic is limited to an interpreter only, lacks a few functions, can only handle programs of a limited size, and lacks support for separate program modules.
This mode has its own proprietary packet encapsulation format which, whilst being easy to use with QBasic, meant that it could only be used to communicate with other QB64 programs or server backends with custom interfaces created specifically for the application. Later versions add GET# and PUT# to read and write raw bytes from the stream. This ...
QBasic (DOS on the PC) – by Microsoft. Subset of QuickBASIC. Came with versions of MS-DOS from 5.0 to 6.22. Also included with DOS 7 (what Windows 95 runs on,) and available from the install CD of Windows 98. QuickBASIC (DOS on the PC) by Microsoft. An evolution of BASICA/GW-BASIC to block-structured lexical syntax that does not require line ...
GW-BASIC 3.20 (1986) adds EGA graphics support (no version of BASICA or GW-BASIC had VGA support) and is the last major new version released before it was superseded by QBasic. Buyers of Hercules Graphics Cards received a special version of GW-BASIC on the card's utility disk that is called HBASIC, which adds support for its 720×348 monochrome ...
The successor to BASICA for MS-DOS and PC DOS versions, now discontinued, is QBasic, launched in 1991. It is a stripped-down version of the Microsoft QuickBASIC compiler: QBasic is an interpreter and cannot compile source files, while QuickBASIC can compile and save the programs in the .EXE executable file format.
In MS-DOS, it was a stub for QBasic running in editor mode. Starting with Windows 95 , MS-DOS Editor became a standalone program because QBasic didn't ship with Windows. The Editor may be used as a substitute for Windows Notepad on Windows 9x , although both are limited to small files only.
An early example of this market is the QBasic software package Microsoft Game Shop (1990), a hobbyist-inspired release that included six "arcade-style" games that were easily customizable in QBasic. [45] In 2013, a game written in QBasic and compiled with QB64 for modern computers entitled Black Annex was released on Steam.