I have a problem with ADT Pro. I am using Version 2.0.3 with an Apple //c and a Mac with Catalina. I am using a USB to Serial (CH340) and a custom build cable (pinout taken from the ADT Pro website).
Bootstrapping works fine with my setup, but I cannot get the application to work. When I try to receive a file from my Mac by pressing the "R" key (or selecting the appropriate menu option) it just gets to an error "HOST TIEMOUT/PRESS ANY KEY TO CONTINUE".
I already have tried throu the settings I can do for the serial interface (baud rate, /dev/cu.usbserial-FD4420, /dev/tty.usbserial-FD4220), but no chance to get any dsk file to my //c.
Where to start analysing this problem?