::|CONTENTS
- Global Effects
- SEGA Genesis (YM2612)
- SEGA Master System (SN76489)
- NINTENDO Game Boy (Z80 variant)
- NEC PC-Engine (HuC6280)
- NINTENDO Entertainment System (RP2A03)
- COMMODORE 64 (SID)
- ARCADE (YM2151)
- ARCADE (SEGA PCM)
- See Also
These are the effects commands available for the 6 chips supported thus far by
DefleMask Tracker. The ones that begin with a 1 are always system-specific (also 2 for the SN76489 and SEGA PCM) so make sure you do not mix them up after switching systems!
Global Effects
00xy - Arpeggio; fast note shifting in half steps.
x = Number of half steps from root note for first shift
y = Number of half steps from root note for second shift
Ex: 037 = Minor chord. 047 = Major chord.
View article on
arps for more examples.
01xx - Portamento up; smooth pitch glide up.
02xx - Portamento down; smooth pitch glide down.
If xx > 00: Speed
If xx = 00: Off
03xx - Glissando; pitch glide to next note.
If xx > 00: Speed
If xx = 00: Off
04xy - Vibrato; pitch vibration.
If x > 0: Speed
If x = 0: Off
y = Depth
Overridden by YMU759; see below.
05xy - Glissando + Volume slide; see Axy below.
Continues previous 03xx effect without modifying it.
06xy - Vibrato + Volume slide; see Axy below.
Continued previous 04xy effect without modifying it.
07xy - Tremolo; volume tremor.
If x > 0: Speed
If x = 0: Off
y = Depth
08xy - L/R output setting.
If x = 0: Left channel output off
If x = 1: Left channel output on
If y = 0: Right channel output off
If y = 1: Right channel output on
Overridden by HuC6280; see below.
09xx - Speed 1 setting; see 0Fxx below.
If xx = 01-20: Ticks per row for odd rows
0Axy - Volume slide.
If x = 0 & y = 0: Halt slide
If x > 0 & y = 0: Volume slide up x ticks depth
If x = 0 & y > 0: Volume slide down y ticks depth
Note: Same parameters for effects 05xy and 06xy above.
0Bxx - Jump to frame.
xx = Destination frame number
0Cxx - Retrigger, works only for current row.
xx = Rate in ticks
0Dxx - Skip to next frame at row xx.
xx = Destination row number
0Fxx - Speed 2 setting; see 09xx above.
If xx = 01-20: Ticks per row for even rows
E1xy - Note slide up
E2xy - Note slide down
x = speed of slide
y = semitones to slide
E5xx - Channel fine pitch setting.
If xx = 80: Default
If xx > 80: Increase pitch
If xx < 80: Decrease pitch
EBxx - Set sample bank to xx.
If xx = 00-0B: Sample bank 0 to 11 is used.
If xx > 0B: nothin'
ECxx - Delayed note cut.
xx = number of ticks to delay
EDxx - Note delay.
xx = number of ticks to delay
EFxx - Global fine pitch setting.
If xx = 80: Default
If xx > 80: Increase pitch
If xx < 80: Decrease pitch
SEGA Genesis (YM2612)
10xy - Amplitude LFO and frequency LFO rate setting.
If x = 0: Disable LFO
If x > 0: Enable LFO
If y = 0-7: Rate
11xx - Feedback setting.
If xx = 00-07: Feedback amount
12xx - Operator 1 total level setting.
13xx - Operator 2 total level setting.
14xx - Operator 3 total level setting.
15xx - Operator 4 total level setting.
If xx = 00-7F: New TL value
16xy - Operator multiplier factor setting.
If x = 0: Operator 1
If x = 1: Operator 2
If x = 2: Operator 3
If x = 3: Operator 4
y = Multiplier factor
17xx - FM channel 6 sample toggle.
If xx = 00: Disable samples
If xx > 00: Enable samples
19xx - All operators attack rate setting.
1Axx - Operator 1 attack rate setting.
1Bxx - Operator 2 attack rate setting.
1Cxx - Operator 3 attack rate setting.
1Dxx - Operator 4 attack rate setting.
If xx = 00-1F: New AR value
SEGA Master System (SN76489)
20xy - PSG noise channel setting.
If x = 0: 3-pitch fixed noise
If x > 0: Variable-pitch noise
If y = 0: Periodic noise
If y > 0: White noise
This effect is also available when the current system is set to Genesis, via the PSG channels.
NINTENDO Game Boy (Z80 variant)
10xx - GB wave channel selector.
If xx = 00-1E: Waveform number
11xx - GB noise channel setting.
If xx = 00: White noise
If xx = 01: Periodic noise
12xx - GB square channel duty setting.
If xx = 00: 12.5% duty
If xx = 01: 25% duty
If xx = 02: 50% duty
If xx = 03: 75% duty
13xy - GB square channel 1 sweep settings.
If x = 0: Sweep down
If x = 1: Sweep up
If y = 0: Sweep off
If y = 1-7: Sweep shift amount
14xx - GB square channel 1 sweep period.
If xx = 00-07: Sweep period
NEC PC-Engine (HuC6280)
08xy - L/R output setting.
x = Left output volume
y = Right output volume
10xx - Instrument waveform selector
If xx = 00-0E: Waveform number
11xx - Channels 5/6 noise toggle.
If xx = 00: Note output
If xx > 00: Noise output
12xx - Channel 2 LFO setting.
If xx = 00: LFO mode off
If xx = 01: LFO mode on, depth 1
If xx = 02: LFO mode on, depth 16
If xx = 03: LFO mode on, depth 256
Channel 2 will produce no audio output itself when LFO mode is enabled, and instrument waveforms on this channel are used to modulate the pitch of channel 1.
13xx - LFO speed setting.
xx = speed; actual rate varies jointly with channel 2's frequency and this effect
17xx - Toggle sample output.
If xx = 00: outputs from wavetable
If xx = 01: outputs from samples
NINTENDO Entertainment System (RP2A03)
12xx - 2A03 square channel duty setting.
If xx = 00: 12.5% duty
If xx = 01: 25% duty
If xx = 02: 50% duty
If xx = 03: 75% duty
COMMODORE 64 (SID)
10xx - Set wave.
If xx = 00: No wave
If xx = 01: Triangle
If xx = 02: Saw
If xx = 03: Saw + Triangle
If xx = 04: Pulse
If xx = 05: Pulse + Triangle
If xx = 06: Pulse + Saw
If xx = 07: Pulse + Triangle + Saw
If xx = 08: Noise
11xy - Set filter cutoff.
If xx = 00-3F: Cutoff value
12xx - Set pulse width.
If xx = 00-3F: Pulse width
13xx - Set filter resonance.
If xx = 00-0F: Filter resonance
14xx - Set filter mode.
If xx = 00: No filter
If xx = 01: Low pass
If xx = 02: Band pass
If xx = 03: Band pass + Low pass
If xx = 04: High pass
If xx = 05: High pass + Low pass
If xx = 06: High pass + Band pass
If xx = 07: High pass + Band pass + Low pass
1Axx - Reset ADSR on new notes.
If xx = 00: Do not reset ADSR
If xx = 01: Reset ADSR on new notes
1Bxy - Reset filter cutoff.
If x = 00: Do not reset filter cutoff on every new note
If x > 00: Reset filter cutoff on every new note
If y = 00: Do not reset filter cutoff instantly
If y > 00: Reset filter cutoff instantly
1Cxy - Reset pulse width.
If x = 00: Do not reset pulse width on every new note
If x > 00: Reset pulse width on every new note
If y = 00: Do not reset pulse width instantly
If y > 00: Reset pulse width instantly
1Exy - Set ADSR parameters.
If x = 0, y = 0-F: Set attack
If x = 1, y = 0-F: Set decay
If x = 2, y = 0-F: Set sustain
If x = 3, y = 0-F: Set release
If x = 4, y = 0-1: Set ring modulation off (0) or on (1)
If x = 5, y = 0-1: Set sync off (0) or on (1)
If x = 6, y = 0-1: Set CH2OFF off (0) or on (1)
ARCADE (YM2151)
10xy - Noise mode set.
This effect will enable the noise output of the 4th operator of the last FM
channel. 00 means disabled, standard behavior as a FM operator. From 0x01
to 0x20 (HEX) you will set the white noise frequency. This provides
independence from the main frequency of the other operators (to make noise
and kick at the same time at different pitches, for example)
11xx - Feedback setting.
If xx = 00-07: Feedback amount
12xx - Operator 1 total level setting.
13xx - Operator 2 total level setting.
14xx - Operator 3 total level setting.
15xx - Operator 4 total level setting.
If xx = 00-7F: New TL value
16xy - Operator multiplier factor setting.
If x = 0: Operator 1
If x = 1: Operator 2
If x = 2: Operator 3
If x = 3: Operator 4
y = Multiplier factor
17xx - Set LFO Speed.
This effect will set the LFO’s speed. It starts disabled (00), the max value is FF.
18xx - Set LFO Waveform.
This effect will change the LFO waveform, 0 SAW, 1 SQUARE, 2 TRIANGLE, 3
NOISE.
19xx - All operators attack rate setting.
1Axx - Operator 1 attack rate setting.
1Bxx - Operator 2 attack rate setting.
1Cxx - Operator 3 attack rate setting.
1Dxx - Operator 4 attack rate setting.
If xx = 00-1F: New AR value
ARCADE (SEGA PCM)
20xx - Set Sample Delta.
This effect will set the speed of sample playback, very useful to make tonal
samples. The formula is: delta*(31250/255)hz = sample hz
See Also
DefleMask Tracker
List of Effects Commands
