N64 + PS1 Super Mario 64 Online (Real Hardware)

Carl Llewellyn demonstrates how he reverse-engineered and modified the PS1 kernel and N64 cartridge hardware to enable cross-console multiplayer.

patreon.com/c/CarlDoesTechThings I also have an unfinished Discord: discord.gg/dxE8VBURYP I made Super Mario 64 and Crash Bandicoot finally talk to each other. The PS1 and N64 had a bunch of reverse engineering involved. Crash Bandicoot was reverse engineered to find kernel jump calls which where then hijacked so that I could alter and read memory (Crash's position and the crab on the first level). This was done in C and assembly: gitlab.com/UrsusArcTech/psx-kernel-module-hijack The nice thing about that is that this can be done with a retail game as the kernel is changed at run time but no editing of the game is required. The N64 has a Raspberry Pi Pico as a fake cartridge where I modified firmware from PicoCart64 (in C) read/write from/to the N64: github.com/Carl-Llewellyn/PicoCart64_usb/tree/usb This allows communication between the N64 and the USB by intercepting calls from the N64 and managing USB comms. I then used the Super Mario 64 decomp (in C) and modified it to read and write to and from certain addresses it thinks is on the cartridge that are intercepted by the Pi Pico: github.com/Carl-Llewellyn/sm64_n64x_usb Then to tie it altogether I have a Go application that manages the data between the consoles that runs on either another Pi, or could be a laptop (I use a laptop in the video cos it's quicker to debug in my setup, I have it also working on a Pi model B so it doesn't require anything fast): gitlab.com/UrsusArcTech/psx-kernel-module-hijack/-/tree/6_by… I know it's called "send_crab_pos" just ignore that and pretend it says something more useful.