Sinclair ZX81 / ZX80 / Timex 1000 - Composite Video with Backporch - Kit

This PCB provides composite video for the Sinclair ZX81 / ZX80 / Timex 1000, it replaces the internal PCB from the modulator.

For ZX81's with earlier type ULA's it generates a back porch signal.

It will work with the later 2C210 ULA. However, this ULA does provide a backporch signal, so the 555 timer chip is not needed and can be removed.

This item is based on the projectZX81 Composite Video with Backporch by YOU HAVE ANY QUESTIONS, PLEASE DON'T HESITATE TO CONTACT ME!
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