Atari 800XL — the machine that finally gave Atari’s ageing 8-bit line a single, cost-reduced, all-in-one design after four years of the bulkier, more expensive 400 and 800.
Why it matters
Launched into a market Commodore had already reshaped around aggressive pricing, the 800XL undercut its own predecessors while keeping full software compatibility with the existing 8-bit Atari library, and went on to become the best-selling model of the entire XL/XE range. It also arrived just as Jack Tramiel — fresh from building the C64 into a phenomenon at Commodore — took over Atari itself in 1984, making the 800XL a genuine hinge point between two very different chapters of Atari’s history.
What to check before you buy
- A dead keyboard with working sound (or working keyboard/sound but failed disk access) is a textbook POKEY chip symptom, not necessarily a dead board
- The Star Raiders cartridge is a handy diagnostic, since it exercises ANTIC, GTIA and the CPU together
- Keyboard reliability issues are very often just a loose or oxidised ribbon cable connection rather than a failed chip
- Ask whether the original external PSU is included and whether it’s been tested — period Atari power adapters have a mixed reliability reputation

