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ZX Spectrim 128 +3 composite video output and drive belt replacement

User
August 31, 2018
Hardware / ZX Spectrum
0 Comments

Did some work on ZX Spectrum 128 +3 I have. One thing was I wanted to make it work with small "TFT Color monitor" (for a car rear view). This monitor has a composite video input. First I tried using CSYNK and GND signals for a composite video input. You get the video but it was terrible quality. It seems that "The 128 ZX Spectrums including the +3 (and +2A, +2B) have audio sound modulated onto the video, which reduces the clarity of the composite signal that is available at…

Making ZX Spectrum edge connector

If You are a little bit into retro computing and would like to experiment with ZX Spectrum computer outputs or make some extension board for it for some prototyping, then you need ZX Spectrum edge connector ( if we talk about original ZX Spectrums ). It is easy to make one by Yourself, just buy some regular 28x2P 56P 2.54mm 0.1" edge connectors on ebay and saw off both ends of it so they could be used for ZX Spectrum, done. https://www.youtube.com/watch?v=ZMIq1yrzVTo

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