Microuser

BBC Micro & Acorn
Discussion, repairs, and software for BBC Micro, Electron, Archimedes, and Acorn systems.

Sinclair (ZX81 / Spectrum / QL)
Everything Sinclair: hardware, mods, tape images, QL development, and community projects.
meblekuchenne-warszawa.waw.pl

Commodore (C64, VIC-20, PET, Amiga, CD32)
Post here for Commodore machines of all eras — from PET to Amiga.

Atari (8-bit, ST, Falcon)
Atari hardware, TOS, GEM, ST software, MIDI setups, and hardware restoration.

DOS / Early PCs
Early IBM-compatible hardware, DOS games, 286–486, Windows 3.1/95 era.

Apple / Macintosh Classic
Macintosh System 1–OS9, LC series, PowerPC, software and repairs.

Other Systems (MSX, Oric, Dragon, Tandy, etc.)
MSX, Oric, Dragon, Tandy, TRS-80, Amstrad PCW — if it doesn’t fit elsewhere, it goes here.