As we saw in the previous post, ten out of the top 20 sector types start with 00 11 0X 00 and continue with all zeros. I suspected why this might be the case and I’ve now confirmed the reason.

A regular Apple II floppy disk has 560 sectors of 256 bytes. Across the 12,450 disks in the current corpus, that’s 6,972,000 sectors. How many unique sector types are there and what are the most common?

Having ranked all the byte values across 12,450 Apple II disk images, how might a specific disk differ?

Which are the most common byte values across the 12,450 Apple II disk images?

I want to get a lot of 6502 machine code, BASIC source, etc. so I’ve gathered a few thousand Apple II disk images.

Okay, I’ve started a repo (and even came up with a Tolkien-inspired acronym)! If you’re interested, star / watch the repo. I’ll start some discussions there too.