2024-01-13 22:11:21 +00:00
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# NES instrument editor
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the NES instrument editor consists of two tabs.
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## DPCM
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this tab is somewhat similar to [the Sample instrument editor](sample.md), but it has been tailored for use with NES' DPCM channel.
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- **Sample**: specifies which sample should be assigned to the instrument.
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- **Use sample map**: enables mapping different samples to notes. see next section for more information.
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- when this option is disabled, 16 notes (from C-0 to D#1 and repeating) will map to the DPCM channel's 16 possible pitches.
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### sample map
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the sample map allows you to set a sample for each note.
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after enabling this option, a table appears with the contents of the sample map.
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- the first column represents the input note.
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- the second column allows you to type in a sample number for each note.
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- you may press Delete to clear it.
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- the third one is used to set the DPCM pitch at which the specified sample will play.
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- for possible values, refer to the table below.
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- you may press Delete to clear it. if no value is specified, the last pitch is used.
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- the fourth column allows you to set the initial delta counter value when playing the sample.
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- this is an hexadecimal number.
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- the range is `00` to `7F`.
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- you may press Delete to clear it. if no value is specified, the delta counter isn't altered.
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- the fifth and last column provides a combo box for selecting a sample.
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you may right-click anywhere in the number, pitch and delta columns for additional options:
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- **set entire map to this pitch**: sets the DPCM pitch of all notes to the selected cell's.
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- **set entire map to this delta counter value**: sets the initial delta counter value of all notes to the selected cell's.
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- **set entire map to this sample**: sets the sample number of all notes to the selected cell's.
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- **reset pitches**: resets the sample map's DPCM pitches to defaults (15).
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- **clear delta counter values**: removes all delta counter values from the map.
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- **clear map samples**: removes all samples from the map.
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## Macros
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- **Volume**: volume sequence.
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- **Arpeggio**: pitch sequence.
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- **Duty/Noise**: duty cycle and noise mode.
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- pulse duty cycles:
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- `0`: 12.5%
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- `1`: 25%
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- `2`: 50%
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- `3`: 75%
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- noise modes:
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- `0`: long noise
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- `1`: short noise
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- **Pitch**: fine pitch.
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- **Phase Reset**: trigger restart of waveform.
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