Agree. On my first dives in Coz this year, my computer was giving me deco obligations that my superior computer (brain) said was hog wash. I did the 10 extra mins. at 10' to make the gadget happy, but I knew it wasn't really necessary (good thing, too, since at the last min I saw a shark!).cornfed:I'm not sure I follow you? No algorithim is going to tell you that you can't dive. What it will do is tell you how much time it thinks you have a certain depth. What you do with that information is up to you.
Turned out I somehow had set the altitude to 2500'-5000'.
My M1 is true RGBM, and I've never been locked out.