The Cassette Tapes used with the TI99/4a (and similar models) could store approximately 200 KB of data (100 KB per side on a standard 30-minute cassette), using the brand's proprietary pulse format. Due to the slow transfer rate, storage was slow, but cost-effective.
Here are the key technical details:
Capacity: Typically 100 KB per side, increasing to approximately 200 KB for a full 30+30-minute cassette.
Speed: Very slow, operating at 300 baud (effectively 150 baud due to double recording for error control).
Media: Commonly available standard audio cassettes.
Method: Used pulse-width modulation and square waves.
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