run0 for you my guy

It was originally a BIOS interrupt, but eventually got captured by the OS. Here’s Dave Bradley talking about inventing it https://m.youtube.com/watch?v=K_lg7w8gAXQ

In the US, appliance bulbs are exempt from the new law. Which by the way mandates a lumens per watt threshold, it doesn’t explicitly ban incandescent bulbs. If someone could come up with an incandescent that meets the requirement they are free to sell as many as they can make.