Hiya kur4o,
The max 233 is basically a 232 but has internal caps. To me the key is the 7407 and although it is called an inverter, it basically "cleans" the signal. As mentioned, the design I did...

BTW, if the ftdi to ttl works with 160 baud please chime in, then I don't have to build anything :)

Hiya kur4o,
Thanks for the reply, yes, I built the transistor based 160 baud before too :)
I thought I read somewhere that the ftdi ttl cable doesn't work with 160 baud. I never paid much...

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....