catskull
catskull.net · Personal blog · on HN since 2015
catskull is a developer who writes about reverse engineering, terminal tools, video encoding, and web development.
What HN saysHN links it for the Game Boy boot logo write-up and the Ghostty shaders post, which came up in discussions of terminals and copy protection.
16HN people shared it
6linked it in comments
30stories submitted
536story points
4 months agolast shared
2015people per year2026
Most-shared posts
- 1Reverse Engineering the Gameboy Boot Screen5 people · 10 points · first shared 2015 · discussion on HN
- 2What's the best AV1 encoder in 2025? I encoded four thousand GIFs to find out4 people · 10 points · first shared 2025 · 1 comments on HN
- 3Fun with Ghostty Shaders4 people · 2 points · first shared 2025 · discussion on HN
- 4A note on iOS 12.2 input types2 people · 3 points · first shared 2019 · 2 comments on HN
- 5Where do you want to go today? (2024)2 people · 1 points · first shared 2025 · 1 comments on HN
- 6What is going on right now?1 people · 378 points · first shared 2025 · 317 comments on HN
- 7I'm Betting on HTML1 people · 42 points · first shared 2023 · 2 comments on HN
- 8Thoughts on Debugging1 people · 41 points · first shared 2024 · 36 comments on HN
- 9Likes – A decentralized social network in a single HTML tag1 people · 11 points · first shared 2024 · 3 comments on HN
- 10Assume people use reader mode1 people · 10 points · first shared 2025 · 2 comments on HN
- 11How to fail a technical interview1 people · 3 points · first shared 2015 · discussion on HN
- 12Public Web Comments with Cloudflare Email Workers1 people · 3 points · first shared 2024 · 2 comments on HN
- 13The Chrome Web Store feels 5 years old1 people · 3 points · first shared 2015 · 1 comments on HN
- 14Stop Using Grey Text1 people · 3 points · first shared 2026 · discussion on HN
- 15Is the Browser Up to Date?1 people · 3 points · first shared 2026 · 1 comments on HN
What HN people wrote when they linked it
catskull · 2026-03-01
Microsoft dumped $100 million on this huge marketing campaign with a simple question:
“Where do you want to go today?”
I love it. It really captures the seemingly endless new digital world that was emerging in the 90’s and in many ways is still evolving 30 years later.
I love the promo video they made too: https://youtu.be/KNLDLVJZx0o
I love it so much I wrote a blog post inspired by it:
https://catskull.net/where-do-you-want-to-go-today.html
Where do you want to go today?
crims0n · 2025-12-03
One fun thing, it supports shaders: https://catskull.net/fun-with-ghostty-shaders.html
mindcrash · 2025-12-03
While foot focuses on minimalism, Ghostty brings along a shit ton of features like support for Kitty's (https://sw.kovidgoyal.net/kitty/) graphics protocol (in terminal images! - https://sw.kovidgoyal.net/kitty/graphics-protocol/), advanced window management (windows, tabs, splits) and OpenGL pixelshaders (https://catskull.net/fun-with-ghostty-shaders.html)
Given features it's more comparable to Kitty than foot IMO.
graypegg · 2024-01-04
I quite like the licensing trick Nintendo used on the gameboy as an example of this. [0]
Essentially, the gameboy expected a bitmap of the Nintendo logo to be present on the cartridge rom, and was shown on screen at boot. It had to match a version stored on the gameboy itself or else the game wouldn’t start.
The thinking (that I’m not sure was ever tested) was that someone producing a game that tried to trick consumers into thinking it was an official Nintendo product, would be liable for damages in a trademark lawsuit. Since the game would never start without an official Nintendo logo, the hope was to make the legal system enforce Nintendo’s licensing scheme.
[0] https://catskull.net/gameboy-boot-screen-logo.html
coldpie · 2019-08-15
The Gameboy did similar. For some odd reason they only verified the top half of the logo, though, so some devs got creative http://fuji.drillspirits.net/?post=87 Technical details here: https://catskull.net/gameboy-boot-screen-logo.html
voltagex_ · 2019-01-10