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.
History of computers, digital electronics, hardware manufacturers and software developers.
Retro hardware generally: boards, extension cards, power supplies, peripherals. Use more specific tags as appropriate; use [case] instead for enclosures.
For questions about the different versions and products of the Commodore 64
The Apple II series of personal computers and related software and hardware. Use [apple-iigs] for the Apple IIgs in particular, or [apple] for Apple hardware in general.
For questions related to the Commodore Amiga family of personal computers.
For questions about the early IBM PC, clones and compatible systems.
MS-DOS, the Microsoft Disk Operating System, and its OEM-branded versions. Use [dos] instead for the x86 DOS family in general.
For questions regarding graphical - as opposed to text - processing and display.
For questions related to the use, restoration and imaging of floppy disks.
Assembly languages in general, of any architecture. Use with the particular processor’s tag as appropriate.
Programming languages and constructs. Please check for language-specific tags first and use those instead, if applicable.
For questions regarding the Zilog Z80 microprocessor
Processes and software for emulating retro hardware (e.g. MAME, QEMU). NOT EVERY EMULATION QUESTION IS ON-TOPIC; SEE TAG WIKI.
For questions about computer memory in a retrocomputing context
For 6502 series of processors, including hardware and assembly language questions. Use with [hardware] for the hardware interface in particular.
BASIC: a high-level programming language favored in retro systems. For dialect-specific questions, use a tag such as [microsoft-basic], [applesoft-basic], etc.
For questions about the different versions and products of the Sinclair ZX Spectrum computer
For questions regarding hardware and drivers used for video output.
For questions about Apple's Macintosh line of computers.
For questions about the maintenance, usage, or history of retro keyboards.
For questions about the applications and programs that can be run on retro devices (computers, etc.)
For questions regarding the products of IBM, International Business Machines.
For quesitons regarding Commodore Business Machines itself or its products that do not have a more specific tag such as commodore-64 or amiga.
Retro games, both hardware and software-based. NOT EVERY GAMING QUESTION IS ON-TOPIC. See tag wiki for guidance.
For questions about the different versions and products of the NES (Nintendo Entertainment System)
For general questions regarding operating systems on retrocomputers.
For questions about the Unix operating system.
For use when seeking identification of a game played on a retrocomputer.
For questions about the different versions and products released by Nintendo
For questions regarding Cathode Ray Tube monitors
For questions about Read Only Memory.
for questions about retrocomputing mainframes or clusters
General questions about computer chips and chipsets in retro hardware. Use a specific chip’s tag instead if available.
The C programming language: its historical aspects and use on/targetting retro platforms.
Retrocomputing hardware and software created by Intel.