Hi Ray

A lot of the apps out there have yet to be recompiled for Apple Silicon, and what happens at the moment is that when MacOS encounters apps built using Intel binaries, it uses Rosetta emulation to translate it to M1 binary. Every well-behaved application that doesn't use virtualisation runs on Apple Silicon.

So my first thought is that this is a Garmin issue, which is concerning to me as unless it gets fixed I won't be upgrading to an Apple Silicon Macbook. However there are suggestions this might be a cabling issue.

___________________________________

Over the years I've found a good source of info for everything Garmin is the USGSer site, this is one thread that might be of interest.

To explore further, this is a link to the group of various GPS subforums on UKGSer. From here click on 'search forum' to search just these sub forums and see what you can find with 'M1' or other search arguments.

I am really concerned about this for my own upgrade plans and should be grateful if you would please update the thread if you find a solution.

___________________________________

I dislike Garmin Basecamp with a vengeance, and I've continued to run Garmin Mapsource which of course isn't available for the Mac. So for the last ten years I've been using Parallels Desktop to provide a virtual Windows XP on the Mac to run Mapsource as a window on the Mac. Hoping this continues to be a viable solution for Apple Silicon Macs.

__________________
"For sheer delight there is nothing like altitude; it gives one the thrill of adventure
and enlarges the world in which you live," Irving Mather (1892-1966)