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A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

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For questions concerning the history of computers, digital electronics, hardware manufacturers and software developers.
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For questions about the components of retro devices (computers, etc.)
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For questions about the different versions and products of the Commodore 64
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For questions related to the Commodore Amiga family of personal computers.
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For questions about the Apple II series of personal computers, and related software and hardware. For questions about Apple hardware in general, use the tag "apple"; for questions about the IIGS in p…
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For questions regarding MS-DOS, the Microsoft Disk Operating System, and its batch scripting language. Do not use this tag for questions about DOS batch languages in general.
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For questions related to the use, restoration and imaging of floppy disks.
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For questions regarding graphical - as opposed to text - processing and display.
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For questions about programming languages and constructs. For questions about specific languages please check for language-specific tags first, and use those instead.
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For questions regarding the Zilog Z80 microprocessor
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For questions about processes and software for emulating retro computer and console hardware (e.g. MAME, QEMU).
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For questions about the early IBM PC, clones and compatible systems.
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For questions about computer memory in a retrocomputing context
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For questions about the different versions and products of the Sinclair ZX Spectrum computer
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For questions regarding hardware and drivers used for video output.
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For questions about Assembly Language in general. Also use the appropriate processor's tag.
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For questions about the applications and programs that can be run on retro devices (computers, etc.)
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For questions about Apple's Macintosh line of computers.
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For questions about BASIC, a lightweight, high-level programming language favored in retro computer systems.
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For questions about the 6502 series of processors, including hardware and assembly language questions. For questions about the hardware interface also use the "hardware" tag.
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For questions about different versions of, and products for, Atari consoles and home computers.
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For questions about the Unix operating system.
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For questions about the maintenance, usage, or history of retro keyboards.
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For questions about the different versions and products released by Nintendo
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For questions about the different versions and products of the NES (Nintendo Entertainment System)
× 32
For questions about retro games, both software and hardware-based.
× 31
For use when seeking identification of a game played on a retrocomputer.
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For questions regarding Cathode Ray Tube monitors
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For quesitons regarding the products of Commodore Business Machines.
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For questions about the software development process on retrocomputing platforms
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For general questions about computer chips and chipsets in retrocomputing hardware. Do not use for questions regarding a specific chip. Use that chip's tag instead.
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For questions about retrocomputing hardware and software created by Intel
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For questions about products made by Apple
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For questions regarding hard disk drive usage. The hardware, connection, format and drivers.
× 27
For questions about Read Only Memory.
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For questions about the Intel 8080 8-bit microprocessor