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| http://raster.infos.cz/atari/rmt/rmt1.gif | | http://raster.infos.cz/atari/rmt/rmt1.gif |
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| <BR>
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| Format zapisu modułu RMT:
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| <pre>
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| RMT 1.x module format
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| --------------------------------
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|
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|
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| header struct
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| =============
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|
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| offset type desc
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| ------ ---- ----
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| 00 WORD header string 'RMT4' or 'RMT8'
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| 04 BYTE track len ($00 means 256)
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| 05 BYTE song speed
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| 06 BYTE player freq
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| 07 BYTE format version number ($01 for player routine 1.x compatible format)
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| 08 WORD pointer to instruments table
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| 0a WORD pointer to tracks table (lo)
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| 0c WORD pointer to tracks table (hi)
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| 0e WORD pointer to tracks list (SONG)
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|
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|
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| instrument struct
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| =================
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|
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| offset type desc
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| ------ ---- ----
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| 00 BYTE tlen (pointer to end of table of notes)
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| 01 BYTE tgo (pointer to loop of table of notes)
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| 02 BYTE elen (pointer to end of envelope)
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| 03 BYTE ego (pointer to loop of envelope)
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| 04 BYTE tspd (bit 0-5), tmode (bit 6), ttype (bit 7)
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| 05 BYTE audctl
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| 06 BYTE vslide
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| 07 BYTE vmin(bit 4-7)
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| 08 BYTE delay ($00 for no vibrato & no fshift)
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| 09 BYTE vibrato
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| 0a BYTE fshift
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| 0b BYTE unused
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| 0c table of notes
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| ? envelope
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|
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| TABLE OF NOTES struct
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| =====================
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| BYTE note or frequence (according to the ttype)
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|
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| ENVELOPE struct
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| ===============
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| BYTE volume (bit 0-3 left channel) (bits 4-7 right channel
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| (in RMT4 it's the same as bits 0-3))
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| BYTE portamento (bit 0), distortion(bit 1-3),
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| command (bit 4-6), filter (bit 7)
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| BYTE XY
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|
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| TRACK struct
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| ============
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| BYTE
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| bit 0-5 note
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| bit 6-7 volume(HI) or pause(1-3 beats) or special
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|
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| if note is $00-$3c:
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| BYTE
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| bit 0-1 volume(LO)
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| bit 2-7 instrument number
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| if note is $3d:
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| BYTE
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| bit 0-1 volume(LO) volume only
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| if note is $3e:
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| bit 6-7 pause
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| if pause is $01-$03: pause 1-3 beats
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| if pause is $00: next byte pause 1-255 beats
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|
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| if note is $3f:
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| if bit 6-7 is zero: next byte speed $01-$ff
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| if bit 6 is zero, 7 is set up: next byte is track jump pointer
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| (go to $00-$ff from the begin of track data)
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| if bit 6-7 is set up: END of track
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|
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| INSTRUMENTS TABLE
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| =================
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| WORD ptr_instr0
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| WORD ptr_instr1
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| WORD ptr_instr3
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| ...
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|
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| TRACKS TABLE (LO)
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| =================
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| BYTE lowbyte_of_ptr_track0
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| BYTE lowbyte_of_ptr_track1
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| BYTE lowbyte_of_ptr_track2
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| ...
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| TRACKS TABLE (HI)
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| =================
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| BYTE highbyte_of_ptr_track0
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| BYTE highbyte_of_ptr_track1
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| BYTE highbyte_of_ptr_track2
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| ...
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|
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| TRACK LIST struct (SONG)
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| ========================
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| BYTE tracknumL1,tracknumL2,tracknumL3,tracknumL4,[tracknumR1,..,tracknumR4]
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| BYTE tracknumL1,tracknumL2,tracknumL3,tracknumL4,[tracknumR1,..,tracknumR4]
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| BYTE tracknumL1,tracknumL2,tracknumL3,tracknumL4,[tracknumR1,..,tracknumR4]
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| ...
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|
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| if tracknum is FF, then empty track is used
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|
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| if tracknumL1 is FE, then gotoline(BYTE)=tracknumL2, goto_pointer(WORD)=(tracknumL3,4)
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| Note: gotoline(BYTE) is not used in player (but tracker uses it)
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| </pre>
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| ==Zobacz też== | | ==Zobacz też== |
Program działający w środowisku MS Windows umożliwiający tworzenie 4- jak i 8-kanałowych (Stereo) modułów dla ośmiobitowego Atari przy wykorzystaniu bibliotek emulujących układy 6502 i POKEY. Autorem jest Raster/C.P.U. Program jest ciągle rozwijany, najnowsza dostępna obecnie wersja to 1.28.
http://raster.infos.cz/atari/rmt/rmt1.gif
Zobacz też
Ten artykuł to tylko zalążek. Możesz pomóc rozwojowi Atariki poprzez rozszerzenie go o więcej informacji.
