V86 mode is entered through IRETD when the VM bit is set in the stacked EFLAGS. The microcode detects this with a conditional jump:
on—the same way that early token-based ATMs introduced deposit boxes.
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Still, I've been sleeping well enough that I've been waking up alright most days even without being bathed in artificial sunlight. Don't get me wrong, I'm still hitting snooze a few times before dragging myself out of bed, but there's been a noticeable improvement in both the quality of my sleep and how miserable I feel come morning. I'm even down to using just two alarms: the Dreamie as my primary alarm, which is getting me up on its own for the most part, and my watch as a backup. At this point, I'm kind of attached to this thing.