The amount of niche knowledge in AI models (GPT4.1 at least) is kinda insane. Asking it to write a parser in JavaScript for the bootsector of an #MSX diskette.

So yeah, I know have a small JavaScript library that can actual MSX-formatted disk images with file contents. And I didn't write a single line of code for that. (But a lot prompting, /undo'ing, prompting again, …)

Ok, teaser, soon to be released:

To clarify: it did not have the bootsector for MSX (although I didn't ask) but it did for MS-DOS. There are slight differences - MS-DOS disks are not bootable on MSX because of that - but it does have the knowledge on how to write a parser for a FAT12 disk, so that it uses correct information when adding files.