INES Mapper 019/Submapper table
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| INES Mapper 019 submapper table | ||
|---|---|---|
| Submapper # | Meaning | Note |
| 0 | Default | Expansion sound volume unspecified |
| 1 | Deprecated | Internal 128b RAM is battery backed, no external PRG-RAM is present.
No expansion sound. (Equivalent to submapper 2 with 0 in PRG-NVRAM field.) |
| 2 | No expansion sound | |
| 3 | N163 expansion sound: 11.0-13.0 dB louder than NES APU | |
| 4 | N163 expansion sound: 16.0-17.0 dB louder than NES APU | |
| 5 | N163 expansion sound: 18.0-19.5 dB louder than NES APU | |
