10-17-2024, 12:57 AM
Like I said, &S0 does absolutely nothing. In my code it simply returns and ignores the command (OK is returned if this command is sent by itself). The command is supported only to prevent an error from being generated should something use it. I think I had to add this for some BBS program to not return an error (maybe GGBS?)
&C1 means that the DCD line will follow the connection state. So, when there is no connection that line is HIGH and when there is a connection that line is LOW. If the BBS looks for the DCD line to know if it is connected then this command would to be enabled. &C0 always sets the DCD line low (like it is always connected).
There is a polarity inversion command you could try, but I doubt anything would ever use that since the Hayes standard is the default polarity.
&C1 means that the DCD line will follow the connection state. So, when there is no connection that line is HIGH and when there is a connection that line is LOW. If the BBS looks for the DCD line to know if it is connected then this command would to be enabled. &C0 always sets the DCD line low (like it is always connected).
There is a polarity inversion command you could try, but I doubt anything would ever use that since the Hayes standard is the default polarity.