Octo
hacn
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Octo
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Ask HN: Show me your half baked project
1. Octo, a CHIP-8 assembler: https://github.com/JohnEarnest/Octo
P.S. Octojam 10 runs until 12:00 AM PST on November 1st! See the following if you're interested! https://itch.io/jam/octojam-10
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Is there a pointer equivalent of declaring an array?
In addition to what other posters suggested, it could be a good idea to try assembly languages as a way to manually work with locations in memory. Something like Octo could be fun if you want to try memory manipulation without worrying about real-world complexities like syscalls and memory alignment. If you want something extra challenging, you could always try x86 / amd64 assembly. Some C compilers even support inline assembly if you want to mix C and assembly.
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How do I make a "game" for Chip8?
Yes, Octo is the most used tool to create CHIP-8 programs today. John has a little introduction text for writing in its dialect here: https://github.com/JohnEarnest/Octo/blob/gh-pages/docs/BeginnersGuide.md
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Feedback on my very own C++ CHIP8 Interpreter/Emulator
I also want to thank you all for all the advice you gave to me and others about CHIP8. It was very helpful to read some posts here ! I also used John Earnest's OCTO a lot for debugging.
- Octo
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Is chip 8 emulator flicker normal?
The octo FAQ touches on this "pre-xoring" technique, and theres a worked example of doing this data preparation in macros. I've also written varioustools that can handle the xoring for you.
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Executable PNGs
In my own system, Octo[0], I encode programs and their metadata in a similar steganographic fashion in GIF files. As others have noted here, both GIF and PNG offer extension mechanisms and ways to embed "comments", but popular image-sharing sites universally re-encode images and discard this data. The advantage of GIF over PNG (for my purposes) is that I store an arbitrary payload in a fixed-looking image by creating additional frames of animation.
In the past, I've also used a different technique- if you simply concatenate a PNG onto a JAR (which is really just a ZIP archive) you end up with a file that acts like a PNG unless you change the extension to JAR, in which case it acts like a Java executable. This works because the PNG header is at the beginning of the file, while the ZIP header is at the end. Nowadays, though, desktop Java is pretty much dead, so it's a less exciting party trick.
[0] https://github.com/JohnEarnest/Octo
hacn
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Ask HN: Show me your half baked project
https://github.com/pj/hacn - kind of like a react monad written in F# using computation expressions. I'm slowly doing a rewrite of parts of it because it isn't very good.
- Show HN: Hacn – a React “monad” implemented using F#/Fable
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Ask HN: Show me your Half Baked project
Hacn: https://github.com/pj/hacn. It’s kind of like a React “monad” in F#/Fable using computation expressions. Control flow is a bit different, basically operations/effects can trigger re-execution of subsequent steps. Right now its alpha quality and any feedback is welcome.
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What Are You Working On 202012
Currently working on Hacn, which is kind of like a React ‘monad’ or DSL using computation expressions in Fable/Feliz.
What are some alternatives?
vis-chip-8 - Visual Chip-8 Emulator
FSharpPlus - Extensions for F#
chip8-test-rom - ROM for testing chip8 emulator
PipeScore - A web-based bagpipe notation app.
chip8-test-suite - A collection of ROM images with tests that will aid you in developing your own CHIP-8, SUPER-CHIP or XO-CHIP interpreter (or "emulator")
jarvis - An AI sidekick that helps you control your computer.
wasm4 - Build retro games using WebAssembly for a fantasy console.
wcp - Experimental file copy tool using io_uring
pixload - Image Payload Creating/Injecting tools
NoSQL - A NoSQL implementation DBMS using LSM Trees
chip8Archive - A repository of community-submitted Chip8 programs and their metadata
logsuck - Easy log aggregation, indexing and searching