Runs the ROM you built from the sonicretro/s1disasm disassembly — or your own cartridge dump.
Your file never leaves this machine. The File is handed straight
to the emulator core (mdcore, MIT licence) in page memory — no upload, no copy into IndexedDB, no server
side to this page. Every off-origin request is blocked outright (the console lists
any that were attempted), so the page cannot talk to anything but the host it came
from.
Sound starts off. Turn it on with the Sound button below the game.
Build your own copy with ./build.sh one directory up; it produces
upstream/s1built.bin, byte-identical to a REV00 cartridge dump.