From Sonic Retro
<forumuser name="FraGag" /> Francis Gagné, better known as FraGag, is a tech member on the Sonic Retro Message Board. He joined on January 9th, 2008 and received tech membership on May 26th. He has very good knowledge of Motorola 68000 assembly and programming in general. He published a simple How-to guide on the Sonic Retro wiki to give Sonic 1 spikes the behavior present in Sonic 2 and later games. He was working on modifying the assembly source to Sonic the Hedgehog 2 on Sonic Retro's GitHub for a few months, then he started working on a Motorola 68000 Family assembler library (libasm68k) based on a generic assembler library (libasm).