Hello Everyone,
I'm having a brain fart since it's been about 25 years since I built my ALDL cables.
My original design used max233 and 7407 inverter chips. Now I want to build a FTDI usb version. I can't remember if the ECM/PCM wants to talk at TTL or Serial and I am hoping some of you can just blurt it out as I don't want to have to read the entire interweb again From memory it seems to me the ECM/PCM talks at TTL and I needed my max chip to convert it so the lappy could listen/talk. FACK, it sucks getting old

My original files are gone 50 laptops ago is why I gotta rethink