I think there’s a story in the Bill Gates biography “Hard Drive” about when he flies to MITS in New Mexico to show off BASIC (I think), then realizes he forgot

I think there’s a story in the Bill Gates biography “Hard Drive” about when he flies to MITS in New Mexico to show off BASIC (I think), then realizes he forgot to write a bootloader, so does it on the plane on a yellow legal pad. Toggles it into the Altair during the demo and it works on the first try. (Might have a lot of details wrong)