I am planning to use MAX232 as an interface to the PC (thank god for com headers still being on motherboards) however, I don't see the dtr header on the max232, so I assume I would be wiring that pin directly from the rs232 port. However wouldn't the dtr from the rs232 serial port be transmitting 12v, which would kill the board?
I want to use the max232 both for programming, a computer interface (for serial println output and stuff) as well as potentially for the computer sending commands to the device while the code is running.
as for not having the bootloader, I know. I am trying to get my parallel port programmer to work so i can do that but it is being really finicky, not sure if you could help with this