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Format
name : Channel Player v1
Created by : Alan / Impact (1994)
Sources :
* One exemple file sent by Gryzor (thx)
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OFFSET
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SIZE (bytes)
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COMMENT
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0
2
-
4
6
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2
2
-
2
4
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- Number of sample (+$A)
- Size of the pattern table
(number of pattern to play *4)
- ?!?
- ?!?
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The following is repeated NOS times
with 16 bytes description for one sample
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Ah
Eh
10h
11h
12h
16h
18h
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4
2
1
1
4
2
2
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- Sample Start address (memory)
- Sample size / 2
- ?!?
- Volume
- Loop Start address
- Loop size / 2
- Finetune (*$48) |
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?!?
-
?!?
-
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?!?
-
?!?
-
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- Pattern table. composed of 4 track
numbers (byte)
- Pattern data. Each track is saved one
after another and is 192 bytes. |
we get something like that:
pattern 0 :
all the 64 row of voice 0
all the 64 row of voice 1
all the 64 row of voice 2
all the 64 row of voice 3
pattern 1 : ...
The size of each pattern is 300h bytes.
One note is always 3 bytes long
Sample number
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0000 0000 0000 0000 0000 0000
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\ / \/ \ /
relative effect effect
note (!$7) value
number
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The relative note number is *2, and therefore,
the bit 0 of the first byte NEVER will be set to 1. It is, then, used
by the sample number (from 0 to $1F). Just dont forget to 'OR' the
relative note number with $FE :)
Beware of the effects numbers 5,6,A (the
ones with a volume slide) because the effect parameter is a SIGNED
value !
relative note number: (Protracker)
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C-1 to B-1 : 856,808,762,720,678,640,604,570,538,508,480,453
C-2 to B-2 : 428,404,381,360,339,320,302,285,269,254,240,226
C-3 to B-3 : 214,202,190,180,170,160,151,143,135,127,120,113
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becomes : (CHN1)
C-1 to B-1 : 02,04,06,08,0a,0c,0e,10,12,14,16,18
C-2 to B-2 : 1a,1c,1e,20,22,24,26,28,2a,2c,2e,30
C-3 to B-3 : 32,34,36,38,3a,3c,3e,40,42,44,46,48
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Follow Sample datas stored like Protracker.
Nothing is packed..
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