AMOSi:Serial X
an example can be found on AMOSPro_Examples:Examples/H-4/Help_47.AMOS
Activates/deactivates the XON/XOFF handshaking system.
Serial X channel,xmode
A value of TRUE for Xmode disables handshaking. Any other value turns it on. Xmode should be loaded with the correct control characters. These must be specified in the following format:
Xmode=XON*$10000000+XOFF*$10000
Check Commodore's documentation for more information.