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On the recordRead 7 Oct 202618 facts
Miracle
On the record
- Build requirement
- The project README says building requires Node.js version 18 or later.github.com · read 7 Oct 2026
- Controls
- The cursor keys and Z/Y and X control the emulator; P pauses it and R resets it.miracle.xania.org · read 7 Oct 2026
- CPU test suite
- The project README reports 1,329 of 1,356 FUSE Z80 CPU tests passing and says the 27 skipped tests cover behaviors not relevant to SMS emulation.github.com · read 7 Oct 2026
- Credits
- Miracle is based on JSSpeccy by Matt Westcott, which in turn is based on Fuse by Philip Kendall and others.miracle.xania.org · read 7 Oct 2026
- Debugger
- The emulator includes a built-in debugger that opens with Backspace.miracle.xania.org · read 7 Oct 2026
- Debugger controls
- The interface includes play, pause, step, step over, step out, reset, and open ROM controls.miracle.xania.org · read 7 Oct 2026
- Emulation tests
- The repository says 1,329 of 1,356 FUSE Z80 CPU tests pass and identifies 27 skipped tests as covering undocumented behavior not relevant to SMS emulation.github.com · read 7 Oct 2026
- Emulator controls
- The interface provides Play, Pause, Step, Step Over, Step Out, and Reset controls.miracle.xania.org · read 7 Oct 2026
- License
- The maker describes Miracle as free software under the GNU General Public License, version 3 or later.miracle.xania.org · read 7 Oct 2026
- Maker
- The page credits Matt Godbolt as the maker.miracle.xania.org · read 7 Oct 2026
- Platform
- The product is described as running totally inside a browser.miracle.xania.org · read 7 Oct 2026
- Product
- Miracle is a JavaScript Sega Master System emulator that runs inside a browser.miracle.xania.org · read 7 Oct 2026
- Project lineage
- Miracle is based on JSSpeccy, which in turn is based on Fuse.miracle.xania.org · read 7 Oct 2026
- Purpose
- Miracle is a JavaScript Sega Master System emulator that runs in a browser.miracle.xania.org · read 7 Oct 2026
- ROM loading
- Users can open a ROM file in the browser or select a listed game.miracle.xania.org · read 7 Oct 2026
- ROMs
- The page lets users open a ROM file or select a listed game.miracle.xania.org · read 7 Oct 2026
- Source code
- The public repository says Miracle can be tried at miracle.xania.org and documents building it with Node.js v18 or later.github.com · read 7 Oct 2026
- Warranty
- The maker states that the program is provided without warranty, including implied warranties of merchantability or fitness for a particular purpose.miracle.xania.org · read 7 Oct 2026
