SNDH
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Format muzyki na tzw. "syntetykach" w formacie chipu YM2149, stosowanego w Atari ST i pokrewnych.
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Archiwum
Archiwum muzyk z Atari ST w formacie SNDH, znaleźć tam można także opis narzędzi do tworzenia muzyki, linki do playerów, itp.
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Format pliku SNDH
Za stroną archiwum:
; SNDH file structure, Revision 2.10
; Original SNDH Format devised by Jochen Knaus
; SNDH V1.1 Updated/Created by Anders Eriksson and Odd Skancke
; SNDH V2.0 by Phil Graham
; SNDH V2.1 by Phil Graham
; This document was originally created by Anders Eriksson, updated and
; adapted with SNDH v2 structures by Phil Graham.
; October, 2012
;
;
; All values are in MOTOROLA BIG ENDIAN format
;---------------------------------------------------------------------------
;Offset Size Function Example
;---------------------------------------------------------------------------
;0 4 INIT music driver bra.w init_music_driver
; (subtune number in d0.w)
;4 4 EXIT music driver bra.w exit_music_driver
;8 4 music driver PLAY bra.w vbl_play
;12 4 SNDH head dc.b 'SNDH'
;---------------------------------------------------------------------------
;Beneath follows the different TAGS that can (should) be used.
;The order of the TAGS is not important.
;---------------------------------------------------------------------------
;---------------------------------------------------------------------------
; TAG Description Example Termination
;---------------------------------------------------------------------------
; TITL Title of Song dc.b 'TITL','Led Storm',0 0 (Null)
; COMM Composer Name dc.b 'COMM','Tim Follin',0 0 (Null)
; RIPP Ripper Name dc.b 'RIPP','Me the hacker',0 0 (Null)
; CONV Converter Name dc.b 'CONV','Me the converter',0 0 (Null)
; ##?? Sub Tunes dc.b '##04',0 0 (Null)
; TA??? Timer A dc.b 'TA50',0 0 (Null)
; TB??? Timer B dc.b 'TB60',0 0 (Null)
; TC??? Timer C dc.b 'TC50',0 0 (Null)
; TD??? Timer D dc.b 'TD100',0 0 (Null)
; !V?? VBL dc.b '!V50',0 0 (Null)
; YEAR Year of release dc.b '1996',0 0 (Null) SNHDv2
; #!?? Default Sub tune dc.b '#!02',0 0 (Null) SNDHv21
; #!SN Sub tune names dc.w x1,x2,x3,x4 None
; dc.b "Subtune Name 1",0 0 (Null) SNDHv21
; dc.b "Subtune Name 2",0 0 (Null) SNDHv21
; dc.b "Subtune Name 3",0 0 (Null) SNDHv21
; dc.b "Subtune Name 4",0 0 (Null) SNDHv21
; TIME (sub) tune time dc.b 'TIME' None SNDHv2
; (in seconds) dc.w x1,x2,x3,x4
; HDNS End of Header dc.b 'HDNS' None SNDHv2
;---------------------------------------------------------------------------
;Calling method and speed
;---------------------------------------------------------------------------
;This a very important part to do correctly.
;Here you specify what hardware interrupt to use for calling the music
;driver.
;
;These options are available;
;dc.b '!Vnn' VBL (nn=frequency)
;dc.b 'TAnnn',0 Timer A (nnn=frequency)
;dc.b 'TBnnn',0 Timer B (nnn=frequency)
;dc.b 'TCnnn',0 Timer C (nnn=frequency)
;dc.b 'TDnnn',0 Timer D (nnn=frequency)
;
;VBL - Is NOT recommended for use. There is no change made to the
; VBL frequency so it will play at the current VBL speed.
;
;Timer A - Is only recommended if Timer C is not accurate enough. Use
; with caution, many songs are using Timer A for special
; effects.
;
;Timer B - Is only recommended if Timer C is not accurate enough. Use
; with caution, many songs are using Timer B for special
; effects.
;
;Timer C - The default timer if nothing is specified. Default speed
; is 50Hz. Use Timer C playback wherever possible. It hooks
; up to the OS 200Hz Timer C interrupt and leaves all other
; interrupts free for special effects.
;
; For songs with a replay speed uneven of 200Hz, SND Player
; uses a smart routine to correct for the wrong speed. The
; result is usually very good. If the result isn't good
; enough,then consider another Timer, but be careful with
; Timer collisions!
;
;Timer D - Is only recommended if Timer C is not accurate enough.
; Use with caution, many songs are using Timer D for
; special effects.
;---------------------------------------------------------------------------
; Default Tune Tag (!#??)
;---------------------------------------------------------------------------
; The !# Tag is followed by a two character ascii value signifying the
; default sub-tune to be played. If this tag is null then a sub-tune of
; 1 is assumed.
;---------------------------------------------------------------------------
;---------------------------------------------------------------------------
; Sub Tune Names (!#SN)
;---------------------------------------------------------------------------
; The !#SN Tag is followed by a table of word offsets pointing to the ascii
; text of sub tune names. The base offset is the actaul !#SN tag. See
; example header below.
;---------------------------------------------------------------------------
;---------------------------------------------------------------------------
; TIME Tag
;---------------------------------------------------------------------------
; The TIME tag is followed by 'x' short words ('x' being the number of
; tunes). Each word contains the length of each sub tune in seconds. If the
; word is null then it is assumed that the tune endlessly loops.
;---------------------------------------------------------------------------
;---------------------------------------------------------------------------
; HDNS Tag
;---------------------------------------------------------------------------
; The HDNS signifies the end of the SNDH header and the start of the actual
; music data. This tag must be on an even boundary.
;---------------------------------------------------------------------------
;---------------------------------------------------------------------------
;Example of a complete SNDH header/file
;---------------------------------------------------------------------------
;
; section text
;
; bra.w sndh_init
; bra.w sndh_exit
; bra.w sndh_vbl
;
; dc.b 'SNDH'
; dc.b 'TITL','Mindbomb - Digi Synth',0
; dc.b 'COMM','Spaz',0
; dc.b 'RIPP','Grazey/PHF',0
; dc.b 'CONV','Quartet-2-SNDH (c) PHF',0
; dc.b '##06',0
; dc.b 'TC200',0
; dc.b '!#01',0
; even
;.subt dc.b '!#SN' ; Subtune names
; dc.w .t1-.subt ; Offset from .subt
; dc.w .t2-.subt
; dc.w .t3-.subt
; dc.w .t4-.subt
; dc.w .t5-.subt
; dc.w .t6-.subt
;
;.t1 dc.b 'What a Bummer',0
;.t2 dc.b 'Paninaro',0
;.t3 dc.b 'Fade to a Pinkish Red',0
;.t4 dc.b 'Revenge of the Mutant Wafer Biscuits',0
;.t5 dc.b 'Mind Bomb (Theme)',0
;.t6 dc.b 'In The Night',0
;
; even
; dc.b 'YEAR','1990',0
; dc.b 'TIME'
; dc.w $e1,$60,$78,$11c,$40,$5f
; even
; dc.b 'HDNS',0
;
;
;sndh_init:
; movem.l d0-a6,-(sp)
; bsr.w player
; movem.l (sp)+,d0-a6
; rts
;
;sndh_exit:
; movem.l d0-a6,-(sp)
; bsr.w player+4
; movem.l (sp)+,d0-a6
; rts
;
;sndh_vbl:
; movem.l d0-a6,-(sp)
; bsr.w player+8
; movem.l (sp)+,d0-a6
; rts
;
; section data
;
;player:
; incbin 'replaycode.bin'
; even
;http://phf.atari.org
;(EOF)
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Dodatkowe info
Kolega Adam Kłobukowski prowadzi stronę [[1]], wg autora: This project aims to record SNDH Archive into modern digital formats.
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