Day 2: Gift Shop
Megathread guidelines
- Keep top level comments as only solutions, if you want to say something other than a solution put it in a new post. (replies to comments can be whatever)
- You can send code in code blocks by using three backticks, the code, and then three backticks or use something such as https://topaz.github.io/paste/ if you prefer sending it through a URL
FAQ
- What is this?: Here is a post with a large amount of details: https://programming.dev/post/6637268
- Where do I participate?: https://adventofcode.com/
- Is there a leaderboard for the community?: We have a programming.dev leaderboard with the info on how to join in this post: https://programming.dev/post/6631465
DOS + BIOS boot (hybrid binary)
Repo | day02.asm | .COM download
Got the x86-16 assembly implementation working at last! Here, 64-bit integer math, especially lots of divisions by power of 10, wasn’t going to do so the code instead operates on fixed-width, zero-padded numeric strings. Lots of time lost to debugging control flow/logic mistakes this time. I need to make printf() a priority!
Short input so no space issues, sitting comfortably at 45K, well below the 64K COM limit! Sadly no time yet to add animations or anything cool.