Start with the correct architecture
Super Cassette Vision is not a Famicom development target. The MAME SCV driver models the NEC uPD7801 processor and console devices. The MiSTer core project describes original hardware examination and test-ROM-based research. Those are useful starting points for understanding the actual machine, not instructions for adapting an NES executable by changing its filename.
The cited sources do not establish one maintained, universal beginner SDK and retail flash-cartridge workflow. Identify the assembler or compiler actually used by a working example and verify its processor target, output format and license. Retain tool revision, source commit and command line. Historical tools may require a particular host environment; record that requirement instead of claiming unsupported portability.
Turn research into a small experiment
Choose one question: a palette entry, a controller response, a sprite interaction or one sound command. Write the smallest program that makes the result visible. Include a build identifier and an unmistakable completion marker. Keep startup and memory initialization based on a verified example. Build that example unchanged before adding your experiment so loader failures are not mixed with the behavior under investigation.
For video research, the core author's repository includes documentation from TV-1 investigation and test-ROM work. An implementation contains both measurements and interpretations. Preserve those distinctions: a timing value measured on a Japanese console should not be reported as a measured value for every regional unit. When documentation marks a detail uncertain, keep the uncertainty in your own notes.
Use controlled comparison
- Pin the emulator or FPGA core and retain its configuration.
- Build an unchanged baseline and record its checksum.
- Change one input or graphics behavior at a time.
- Capture the observed result and the intended result separately.
- Test on identified hardware only through a documented compatible loading route.
- Publish differences with the exact build and configuration.
Do not infer electrical compatibility from a software memory map. A homebuilt cartridge requires its own verified schematic, voltage requirements, bus timing and physical connector design. Processor and ROM datasheets are references for components, not proof that an arbitrary adapter is safe for the console. Use an established documented build before designing a new interface.
Preserve reproducibility and permissions
Distribute source, tool information, output format, checksums and a short test sequence. Include licenses and provenance for code and assets. A video showing a prototype is evidence of that demonstration, not proof that a downloadable release or source exists. Keep proprietary firmware and copied commercial assets outside an original sample unless redistribution is authorized.
A useful bug report identifies console variant, board information where known, loading route, emulator revision, first failing marker and whether the issue repeats after a cold start. Archive failed experiments too: they can reveal a mapping or timing assumption that another researcher would otherwise repeat. See media preservation to keep original dumps and derived test files distinguishable.