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- ───── Extreme's Tracker. AMS Format v1.3 ──────
-
- - MIDI isn't included -
-
- Offs Byte(s) Desc
-
- [Header]
- 0 7 Header: "Extreme"
- 7 2 Version of format (Hi = MainVer, Low = SubVer eg. 0100 = 1.0)
- 9 1 cccsssss
- c = Nr of Commands used in tune,
- s = Nr of Sample channels-1 used in tune (0-31)
- 10 1 Nr of Samples (0-255)
- 11 2 Nr of Patterns (1-65535)
- 13 2 Nr of Positions (1-65535)
- 15 1 Nr of Virtual MIDI channels (0-31)*
- 16 2 Nr of extra bytes
- x Virtual MIDI Channel Info.**
- x Extra bytes for future use.
-
- * Channels may be duplicated so you can play several notes on the
- same channel, this means that you can have more than 16 MIDI channels.
- (Actually the same amount as the polyphony of the Synth.) Max 32.
- ** The numbers represents REAL MIDI channels, the position VIRTUAL channels.
- e.g: 0,1,2,2,3,4,5,6,7,7,7,8,9,9
- That means that you use 10 real MIDI channels, but you play more that one
- note one some. The size of the table is the same as Nr of MIDI Channels
-
-
- [Sample]
- 4 Length Of Sample
- 4 Repeat Start for sample
- 4 Repeat End for sample
- 1 Hi Nibble=PanPosition, Lo Nibble=FineTuneValue
- 2 SampleRate for C-2 (normally 8363Hz)
- 1 Volume (0-127) MIDI Compatible
- 1 Info Byte 76543210 If set to 1:
- ││││││└┴─ Packing Method
- │└┴┴┴┴─── Unused
- └──────── 16 bit sample
-
- Data for rest of samples are exactly the same!
-
- [Names]
- 1 Length of ModName (max 30 bytes)
- x ModName
- 1 Length of SampName (max 30 bytes)
- x SampName(s)
- 1 Length of ChannelName (max 11 bytes)
- x ChannelName(s)
- 1 Length of PatternName (max 10 bytes)
- x PatternName(s)
- 2 Length of Description (max 65535 bytes)
- x Description of Module
-
- The Number of SampleNames are equal to nr of Samples used
- The Number of ChannelNames are equal to nr of Channels used
- The Number of PatternNames are equal to nr of Patterns used
-
- [PatternOrder]
- x PatternNr. Holds number (0-65535) to tell the tracker what
- pattern to play at that position
-
- [PatternData]
- 4 PatternSize (packed)
- x PatternData
-
- fpmiiiii eppppppp ssssssss [rgcccccc bbbbbbbb...]
-
- Legend:
- f 1=Last data chunk on the row.
- p 0=Only Read Period+SampleNr, 1=Only Read Command
- m 0=Sample Channel, 1=MIDI channel
- i Channel (Samp 0-31, MIDI 0-15)
- e 1=Read one command
- p Period. Note 12-108 (C-0 to B-7)
- s SampleNr (0-255)
- r 1=Read one more command
- g 1=Low 6 bits are volume/2
- c Command-nr
- b Command-byte
-
- If g is set, the command only consist of that byte and
- the low 6 bits are assumed to be a volume command. You
- have to multiply the volume by 2 to get the proper value
- (Volume will only be stored this way if it's dividible with 2)
-
- [Samples]
- All samples stored after eachother, packed with a special packing
- method. (if packing option is on in Options) Not described here!
-