smsggrecomp
mstan/smsggrecomp
A static Z80 recompiler for Master System and Game Gear, with its own runner modeling the VDP, SN76489 PSG, I/O and mapper. Its README says it is neither an emulator nor a hand-port, and that it is early (v0.0.3, October 18) with two games in bring-up. 43 of its 51 commits list Claude as a co-author.
Sonic the Hedgehog (Master System)
mstan/SonicTheHedgehogSMSRecomp
A static recompilation of the 8-bit Sonic the Hedgehog for Master System with smsggrecomp, the author’s own framework for Master System and Game Gear: the Z80 code is translated to C ahead of time and compiled to native code, while the runtime library simulates the VDP, SN76489 sound, the ports, and the Sega mapper; jumps the analysis can’t resolve go through a Z80 interpreter. Every release is a pre-release. The first, from June 23, booted and let you play Green Hill Zone; 0.0.3 (October 18) enters, with assistance, 27 level and bonus-stage selections and both endings through the credits without touching the interpreter, though an unassisted full playthrough remains unverified. You launch it from the command line with the ROM path, or by dragging the ROM onto Play.cmd. The download is for 64-bit Windows. 9 of its 14 commits list Claude as a co-author.
You needYour own Sonic the Hedgehog ROM for Master System (the same image in the US, Europe, and Brazil: CRC32 B519E833, 256 KB). Plus 64-bit Windows.