MIDAS-VII Score (M7SLOTnn.SCR) File Format		1988-06-28	Rev 2
------------------------------------------		----------	-----

	. Scores are stored in files with up to 20 scores per file.
	. Scores are stored on disk in packed form and unpacked when loaded.
	. An empty score takes only a 4 byte length flag (-1L) on disk.

. Each file consists of:

	Library Header Record		56 bytes
	---------------------		--------

	. Every MIDAS-VII library file has a header, as follows:

		struct	mlibhdr	{	/* MIDAS library file header */

			char	l_csum[8];	/* checksum in HEX ASCII, of all but l_csum[] */
			char	l_name[8];	/* file name */
			char	l_type[3];	/* file type (SCR for a score) */
			char	l_cmnt[37];	/* comment */
		};


	Total longs required		4 bytes
	--------------------		-------

	. Total number of longs required in RAM to load all of the scores.

	Scores 01-20
	------------

	. All scores start with their length:

		nbr	4 bytes		Number of longs required,
					or -1L if the score is empty

	. Non-Empty scores have the following additional data:

		scname	16 bytes	Score name  (not zero terminated)

		stimes	240 bytes	Section flags and SMPTE times

			table:  20 entries, 1 per section, 12 bytes per section

			struct s_time {		/* section time structure */

				short	sflags;		/* flags */
				char	smpte[10];	/* SMPTE start timecode */
			};

		events	5..32 bytes	Packed event data

			. See "MIDAS-VII Score Event Formats" for details.

MIDAS-VII Score Event Sizes  (in bytes)
---------------------------------------

. Standard event sizes in RAM:

	E_SIZE1		20 bytes
	E_SIZE2		24 bytes
	E_SIZE3		32 bytes

. Event sizes in RAM and on disk:

	size		score	disk	type
	-------		-----	----	--------------
	E_SIZE1		20	0	 0 - EV_NULL
	E_SIZE1		20	6	 1 - EV_SCORE
	E_SIZE2		24	6	 2 - EV_SBGN
	E_SIZE2		24	6	 3 - EV_SEND
	E_SIZE2		24	7	 4 - EV_INST
	E_SIZE1		20	9	 5 - EV_NBEG
	E_SIZE1		20	9	 6 - EV_NEND
	E_SIZE1		20	5	 7 - EV_STOP
	E_SIZE1		20	7	 8 - EV_INTP
	E_SIZE2		24	6	 9 - EV_TMPO
	E_SIZE2		24	6	10 - EV_TUNE
	E_SIZE2		24	7	11 - EV_GRP
	E_SIZE2		24	7	12 - EV_LOCN
	E_SIZE2		24	7	13 - EV_DYN
	E_SIZE2		24	8	14 - EV_ANVL
	E_SIZE2		24	7	15 - EV_ANRS
	E_SIZE2		24	6	16 - EV_ASGN
	E_SIZE3		32	8	17 - EV_TRNS
	E_SIZE1		20	6	18 - EV_REPT
	E_SIZE1		20	6	19 - EV_PNCH
	E_SIZE1		20	7	20 - EV_PRES
	E_SIZE1		20	6	21 - EV_FINI
	E_SIZE1		20	7	22 - EV_CPRS
	E_SIZE1		20	5	23 - EV_BAR
MIDAS-VII Event Formats on Disk
-------------------------------

	. All events are stored on disk in compressed form as:

		+0	1 byte		type code,

		+1	4 bytes		time  (in absolute frames),

		+5	0 to 4 bytes	parameter data.


	Type		Format on disk
	--------	------------------------------
	EV_NULL		-- not stored on disk --
	EV_SCORE	01  tt tt tt tt  nn
	EV_SBGN		02  tt tt tt tt  ss
	EV_SEND		03  tt tt tt tt  ss
	EV_INST		04  tt tt tt tt  gg  ii
	EV_NBEG		05  tt tt tt tt  nn  gg  vv vv
	EV_NEND		06  tt tt tt tt  nn  gg  vv vv
	EV_STOP		07  tt tt tt tt
	EV_INTP		08  tt tt tt tt  ii ii
	EV_TMPO		09  tt tt tt tt  vv
	EV_TUNE		0A  tt tt tt tt  nn
	EV_GRP		0B  tt tt tt tt  gg  ss
	EV_LOCN		0C  tt tt tt tt  gg  ll
	EV_DYN		0D  tt tt tt tt  gg  dd
	EV_ANVL		0E  tt tt tt tt  vg  vv vv
	EV_ANRS		0F  tt tt tt tt  vg  rr
	EV_ASGN		10  tt tt tt tt  nn
	EV_TRNS		11  tt tt tt tt  gg  cc cc
	EV_REPT		12  tt tt tt tt  cc
	EV_PNCH		13  tt tt tt tt  cc
	EV_PRES		14  tt tt tt tt  kk  pp			(OBSOLETE)
	EV_FINI		15  tt tt tt tt  ss
	EV_CPRS		16  tt tt tt tt  gg  pp			(OBSOLETE)
	EV_BAR		17  tt tt tt tt
	EV_NEXT		18  tt tt tt tt