sevenon.github.io

sevenon’s project archive

https://github.com/sevenon



memorabilia

Apple IIe - I wrote my first program on an Apple IIe. It was year ten at a Melbourne high school. I was immediately hooked.


             

Shortly after my parents bought me a Commodore 128. I had an amber monochrome monitor, disk drive and a dot matrix printer too.

My first IT purchase was a book titled: Commodore 64 Programmer’s Reference Guide. It’s one of the few memorabilia I kept from my teens. A family friend gave me another book titled: A Commodore 64 mikrogep kezelese es programozasa. It came from Hungary.


I played Frogger a lot, unfortunately it was terribly slow to load from a casette tape. I figured out a way to save the entire game to a floppy disk. I was staring at assembly code for days.



toyrouter - a linux router stripped to bare essentials

https://github.com/sevenon/toyrouter


September 2020

Bare bones Linux WAN to LAN router.

Only uses busybox and iptables in user space. Built as a programming exercise, but functional. Probably the simplest router you will find.

Installs over Ubuntu by creating a new entry in the boot menu. Uses overlayfs without modifying the Ubuntu user space.

Combines the simplicity of a busybox user space with the ease of installation of Ubuntu.

I got the inspiration from The Ars guide to building a Linux router from scratch. I decided that I wanted something that is even more from “scratch”.



bminus - a c subset compiler

https://github.com/sevenon/bminus


November 2014

Minimalist C subset compiler. Capable of compiling itself, no external dependencies, no linking, does not use the C library.

Retargetable with four different back ends:

Straight forward design. BNF rules map to one function in general. Code is generated straight from a recursive parser.


September 2020

Compiles under Ubuntu 20.04. Replaced Oracle jjs with NodeJs.


October 2020

New target for generating Linux elf binary.


sevenon.au@gmail.com