This is a remnant of days long gone when the PC - DOS and early Windows systems used serial-port connected mice. It used the sequence to detect the presence of a mouse. The Mac has never used asynchronous serial-port based mice, instead using a special bus, followed by ADB in early Macs (starting with the Mac Plus), then USB after it was adopted. Thus it does not mess with the serial ports on startup.
I now wonder why Microsoft maintains this arcane procedure since its utility has long passed into history. Jack, W6FB > On Mar 31, 2018, at 4:31 PM, Bill Frantz <[email protected]> wrote: > > I guess I'm not being clear. I don't think the Mac moves the DTR/RTS lines > when it boots. I haven't ever seen the K3 go into transmit mode when I reboot. > > Of course that might be because I have PTT_KEY set to OFF-OFF and use VOX for > sound card modes except wsjt-x and RUMlogNG contest mode. (They use the CAT > interface.) > > 73 Bill AE6JV > > On 3/29/18 at 5:11 PM, [email protected] (Don Wilhelm) wrote: > >> If you have updated the K3 firmware in the last few months, it does not make >> any difference whether the K3 or the computer is turned on first. >> The K3 now has a SAFE mode that disables DTR and RTS until it receives some >> command like polling for frequency, mode, etc. from your software >> application. >> >> You can go into the K3 CONFIG menu for KEY-PTT and turn it to unsafe if you >> have devices that monitor the RS-232 bus and do not issue any commands >> (SteppIR controllers for one instance). >> >> Look at the firmware release notes for the past 3 months. >> BTW, the firmware release notes should be considered an addition to your >> K3/K3S manual. Do not overlook them. >> >> 73, >> Don W3FPR >> >> On 3/29/2018 6:58 PM, Bill Frantz wrote: >>> On my Mac system, it doesn't seem to matter whether the radio or the >>> computer starts first. The USB interface to my upgraded K3 is powered from >>> the computer with enough functionality that the computer recognizes it >>> without the radio being on. >>> >>> In any case, start wsjt-x last because it will try to talk to the radio for >>> rig control and harass you until it can succeed. I've been in this >>> situation enough times to know that starting the radio, waiting until the >>> radio is ready to talk to the computer and then clicking "Retry" works. >>> >>> 73 Bill AE6JV >>> >> > --------------------------------------------------------------------------- > Bill Frantz | "I wish there was a knob on the TV to turn up the > 408-356-8506 | intelligence. There's a knob called "brightness", but > www.pwpconsult.com | it doesn't work. -- Gallagher > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
