Talk:Atari SIO
Add topicLatest comment: 5 months ago by ~2026-12592-85 in topic There IS an A-to-D converter in the Atari 8-bit computers
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There IS an A-to-D converter in the Atari 8-bit computers
[edit]Dear all, In the cassette section, the current version of the article reads "... as there was no A-to-D converter in the computer". I'm afraid that's not accurate. Paddles plugged into the joystick ports have a variable resistance, and this analog signal is converted by the computer into a numeric 0-228 (or was it 1-228?) value. So there IS an A-to-D converter in the Atari 8-bit computers. Kind regards, Ldelsarte (talk) 15:57, 27 July 2023 (UTC)
- That's a bit of a grey area, as, at its core, (if it works like the Apple II's 555 timer based inputs) it is a resistance/capacitance to delay converter. It doesn't convert a voltage to a value—like an audio input does. —überRegenbogen (talk) 08:00, 4 January 2026 (UTC)
- The inner workings of the cassette recorder are also mostly irrelevant to an article on the SIO system, so I don't know why there needs to be such an in-depth description of its circuitry. ~2026-12592-85 (talk) 18:02, 25 February 2026 (UTC)