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added pt2-effects.txt

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EFFECT COMMANDS
---------------
Effect commands on ProTracker should
be compatible with all other trackers.
0 - None/Arpeggio 8 - * NOT USED *
1 - Pitch Slide Up 9 - Sample Offset
2 - Pitch Slide Down A - Volume Slide
3 - Tone Portamento B - Position Jump
4 - Vibrato C - Set Volume
5 - Tone Porta + VolSlide D - Pattern Break
6 - Vibrato + VolSlide E - Misc. Cmds
7 - Tremolo F - Set Speed
E - COMMANDS
------------
The E command has been altered to contain more commands than one.
E0- LED Filter On/Off E8- * NOT USED *
E1- Fine Pitch Slide Up E9- Note Retrig
E2- Fine Pitch Slide Down EA- Fine Volume Slide Up
E3- Glissando Control EB- Fine Volume Slide Down
E4- Set Vibrato Waveform EC- Note Cut
E5- Set Finetune ED- Note Delay
E6- Pattern Loop EE- Pattern Delay
E7- Set Tremolo Waveform EF- Invert Loop
Cmd 0. Arpeggio [Range:$0-$F/$0-$F]
-----------------------------------
Usage: $0 + 1st halfnote add
+ 2nd halfnote add
Arpeggio is used to simulate chords. This is done by rapidly changing the
pitch between 3 (or 2) different notes. It sounds very noisy and grainy on
most samples, but okay on monotone ones.
Example: C-300047 C-major chord: (C+E+G or C+4+7 halfnotes)
C-300037 C-minor chord: (C+D#+G or C+3+7 halfnotes)
Cmd 1. Pitch Slide Up [Speed:$00-$FF]
-------------------------------------
Usage: $1 + slide speed
This will simply slide the sample pitch up. You can NOT slide
higher than B-3! (Period 113)
Example: C-300103 1 is the command, 3 is the slide speed.
NOTE: The pitch slide will be called as many times as the speed of the song.
This means that you'll sometimes have trouble sliding accurately. If you
change the speed without changing the slide rates, it will sound bad...
Cmd 2. Pitch Slide Down [Speed:$00-FF]
--------------------------------------
Usage: $2 + slide speed
Just like command 1, except that this one slides the pitch down instead.
(adds to the period).
You can NOT slide lower than C-1! (period 856)
Example: C-300203 2 is the command, 3 is the slide speed.
Cmd 3. Tone Portamento [Speed:$00-$FF]
--------------------------------------
Usage: Dest-note + $3 + slidespeed
This command will automatically slide from the old note to the new.
You don't have to worry about which direction to slide, you need only set
the slide speed. To keep on sliding, just select the command $3 + 00.
Example: A-200000 First play a note.
C-300305 C-3 is the note to slide to, 3 the command,
and 5 the speed.
Cmd 4. Vibrato [Rate:$0-$F,Depth:$0-$F]
---------------------------------------
Usage: $4 + vibratorate + vibratodepth
Vibrato will vibrate the sample pitch with a waveform (FM synthesis).
Example: C-300481 4 is the command, 8 is the speed of the vibrato,
and 1 is the depth of the vibrato.
To keep on vibrating, just select the command $4 + 00. To change the
vibrato, you can alter the rate, depth or both. Use command E4- to
change the vibrato waveform.
Cmd 5. Tone Portamento + Volume Slide [Speed:$0-$F/$0-$F]
---------------------------------------------------------
Usage: $5 + upspeed + downspeed
This command will continue the current tone portamento and slide the volume
at the same time. Compatible with Noisetracker 2.0.
Example: C-300503 3 is the speed to turn the volume down.
C-300540 4 is the speed to slide it up.
Cmd 6. Vibrato + Volume Slide [Speed:$0-$F/$0-$F]
-------------------------------------------------
Usage: $6 + upspeed + downspeed
This command will continue the current vibrato and slide the volume at the
same time. Compatible with Noisetracker 2.0.
Example: C-300605 5 is the speed to turn the volume down.
C-300640 4 is the speed to slide it up.
Cmd 7. Tremolo [Rate:$0-$F,Depth:$0-$F]
---------------------------------------
Usage: $7 + tremolorate + tremolodepth
Tremolo will vibrate the volume with a waveform (AM synthesis).
Example: C-300794 7 is the command, 9 is the speed of the tremolo,
and 4 is the depth of the tremolo.
To keep on tremolo'ing, just select the command $7 + 00. To change the
tremolo, you can alter the rate, depth or both. Use command E7- to
change the tremolo waveform.
Cmd 9. Set Sample Offset [Offs:$00-$FF]
---------------------------------------
Usage: $9 + sample offset
This command will play from a chosen position in the sample, and not from
the beginning. The two numbers equal the two first numbers in the length
of the sample. Handy for speech samples.
Due to a bug in the ProTracker replayer, attempting to use this command on
samples longer than 65534/$FFFF will result in no sound.
Example: C-300923 Play sample from offset $2300.
Cmd A. Volume Slide [Speed:$0-$F/$0-$F]
---------------------------------------
Usage: $A + upspeed + downspeed
Example: C-300A05 5 is the speed to turn the volume down.
C-300A40 4 is the speed to slide it up.
NOTE: The slide will be called as many times as the speed of the song.
The slower the song, the more the volume will be changed on each note.
Cmd B. Position Jump [Pos:$00-$7F]
----------------------------------
Usage: $B + position to continue at
Example: C-300B01 B is the command, 1 is the position to
restart the song at.
This command will also perform a pattern break (see 2 pages below).
You can use this command instead of restart as on Noisetracker, but you
must enter the position in hex!
Cmd C. Set Volume [Volume:$00-$40]
----------------------------------
Usage: $C + new volume
Well, this old familiar command will set the current volume to your own
selected. The highest volume is $40. All volumes are represented in hex.
(programmers do it in hex, you know!)
Example: C-300C10 C is the command, 10 is the volume (16 decimal).
Cmd D. Pattern Break [Row:00-63, decimal]
-----------------------------------------
Usage: $D + row
This command just jumps to the next song position, and continues play
from the row you specify.
Example: C-300D00 Jump to the next song position and continue play
from row 00.
Or: C-300D32 Jump to the next song position and continue play
from row 32 instead.
Cmd E0. Set LED Filter [Range:$0-$F]
------------------------------------
Usage: $E0 + value (0 = on, anything else = off)
This command jerks around with the stupid LED filter.
No one should ever use it.
Example: C-300E01 turns LED filter off
C-300E00 turns LED filter on
Cmd E1. Fine Pitch Slide Up [Range:$0-$F]
-----------------------------------------
Usage: $E1 + value
This command works just like the normal portamento up, except that
it only slides up once. It does not continue sliding during the length
of the note.
Example: C-300E11 Slide up 1 at the beginning of the note.
(great for creating chorus effects)
Cmd E2. Fine Pitch Slide Down [Range:$0-$F]
-------------------------------------------
Usage: $E2 + value
This command works just like the normal portamento down, except that
it only slides down once. It does not continue sliding during the length
of the note.
Example: C-300E26 Slide up 6 at the beginning of the note.
Cmd E3. Glissando Control [Range:$0-$1]
---------------------------------------
Usage: $E3 + glissando control
Glissando must be used with the tone portamento command. When glissando is
activated, tone portamento will slide a halfnote at a time, instead of a
straight slide.
Example: C-300E31 Turn Glissando on.
C-300E30 Turn Glissando off.
Cmd E4. Set Vibrato Waveform [Range:$0-$3]
------------------------------------------
Usage: $E4 + vibrato waveform
Example: C-300E40 Set sine (default)
E44 Don't retrig WF
C-300E41 Set Ramp Down
E45 Don't retrig WF
C-300E42 Set Squarewave
E46 Don't retrig WF
Cmd E5. Set Finetune [Range:$0-$F]
----------------------------------
Usage: $E5 + finetune value
Example: C-300E51 Set finetune to 1.
Use these tables to figure out the finetune value.
Finetune: +7 +6 +5 +4 +3 +2 +1 0
Value: 7 6 5 4 3 2 1 0
Finetune: -1 -2 -3 -4 -5 -6 -7 -8
Value: F E D C B A 9 8
Cmd E6. Pattern Loop [Loops:$0-$F]
----------------------------------
Usage: $E6 + number of loops
This command will loop a part of a pattern.
Example: C-300E60 Set loop start.
C-300E63 Jump to loop 3 times before playing on.
Cmd E7. Set Tremolo Waveform [Range:$0-$3]
------------------------------------------
Usage: $E7 + tremolo waveform
Example: C-300E70 Set sine (default)
E74 Don't retrig WF
C-300E71 Set Ramp Down
E75 Don't retrig WF
C-300E72 Set Squarewave
E76 Don't retrig WF
Cmd E9. Note Retrig [Value:$0-$F]
---------------------------------
Usage: $E9 + tick to retrig note at
This command will retrig the same note before playing the next. Where to
retrig depends on the speed of the song. If you retrig with 1 in speed 6
that note will be trigged 6 times in one note slot. Retrig on hi-hats!
Example: C-300F06 Set speed to 6.
C-300E93 Retrig at tick 3 out of 6.
Cmd EA. Fine Volume Slide Up [Range:$0-$F]
------------------------------------------
Usage: $EA + value
This command works just like the normal volume slide up, except that
it only slides up once. It does not continue sliding during the length
of the note.
Example: C-300EA3 Slide volume up 1 at the beginning of the note.
Cmd EB. Fine Volume Slide Down [Range:$0-$F]
--------------------------------------------
Usage: $EB + value
This command works just like the normal volume slide down, except that
it only slides down once. It does not continue sliding during the length
of the note.
Example: C-300EB6 Slide volume down 6 at the beginning of the note.
Cmd EC. Note Cut [Value:$0-$F]
------------------------------
Usage: $EC + tick to cut note at
This command will cut the note at the selected tick, creating
extremely short notes.
Example: C-300F06 Set speed to 6.
C-300EC3 Cut at tick 3 out of 6.
Note that the note is not really cut, the volume is just turned down.
Cmd ED. Note Delay [Value:$0-$F]
--------------------------------
Usage: $ED + ticks to delay note
This command will delay the note to the selected tick.
Example: C-300F06 Set speed to 6.
C-300ED3 Play note at tick 3 out of 6.
You can play the same note on two channels, delay one, and get a
nice flanger effect.
Cmd EE. Pattern Delay [Notes:$0-$F]
-----------------------------------
Usage: $EE + notes to delay pattern
This command will delay the pattern the selected numbers of notes.
Example: C-300EE8 Delay pattern 8 notes before playing on.
All other effects are still active when the pattern is being delayed.
Cmd EF. Invert Loop [Speed:$0-$F]
---------------------------------
Usage: $EF + Invertspeed
This command will need a short loop ($10,20,40,80 etc. bytes) to work.
It will invert the loop byte by byte.
Example: C-300EF8 Set invspeed to 8.
To turn off the inverting, set invspeed to 0, or press ctrl + Z.
Cmd F. Set Speed [Speed:$00-$FF]
--------------------------------
Usage: $F + speed
This command will set the speed of the song (ticks per row).
Vblank: Range 01-FF - Normal timing
CIA: Range 01-1F - Set vblank speeds with CIA timing.
CIA: Range 20-FF - Set BPM speeds, range 32-255.
Both: Range 00 - STOP song.