On 10/12/2019 13:17, Jeffrey Birt wrote: > I don't understand the question. There is only one signal from the cassette read head. It gets amplified and 'squared up' to make a digital signal out of it. That is it. One explanation I've see is that it basically converts + to 1 and - to 0 (or vice versa). The c64 then has an active low trigger which detects zero crossing. The other is that the tape drive itself is look for zero crossing and creates a low high pulse when it occurs.Received on 2020-05-29 23:50:52
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