Technical information

SEGA Confidential

• SectorRate

The number of sectors transferred in 1 second (75 or 150). The default is 150 (sectors/sec).

• FileNo (file interleaved file)

Specifies the file number.

• BeginTimeE (file interleaved file)

Files in the file-interleave are laid out in relative positions from the beginning position shown by

Extent.

• EndTimeE (file interleaved file)

Files in the file interleave are laid out in relative positions from the end position shown by

Extent.

• SameName

Shows the directory name and file name used in the directory record and in the path table identi-

fied by the subvolume descriptor.

Defining Channel-Interleaved Files

Channel-interleaved files are defined as pairs of <Channel line> and <EndChannel

line>. One channel is defined between <Channel line> and <EndChannel line>.

The channel number is selected in the channel line parameter. The channel data

defined between

<Channel line> and <EndChannel line> is also defined as either a

file source group or MPEG source line. It cannot be defined as both.

The priority when arranging each channel in a sector follows the order of the com-

mands recorded in the scripted file. The arrangement of the channels in a file can be

stated explicitly. To interleave a channel that follows immediately after a previously

defined channel, specify explicitly at the beginning of the channel. To do this, specify

a “+” in the

BeginTimeF line in the FileSource definition line or the MpegMultiplex

definition line. To interleave a channel before that channel, so that is follows a

previously defined channel, make an explicit specification at the end of the channel.

To do this, specify a “-” in the

EndTimeF line parameter of the FileSource definition

line or the

MpegSource definition line.

Defining MPEG Files

MPEG files are defined between <MpegMultiplex line> and <EndMpegMultiplex

line>. This definition allows multiple MPEG-compressed data (audio, video, data),

to add the system layers, perform multiplex, and create ISO11172 streams. The

ISO11172 streams are arranged on disk as ISO9660 files. The ISO11172 stream in the

MpegMultiplex line parameter specifies the MS-DOS file to be output. When it is

not necessary to create an MS-DOS file, this parameter is not specified.

Each MPEG data that makes up the MPEG file is defined between <MpegStream

line> and <EndMpeg Stream line>. The data file and data type stored by the MPEG-

compressed data are specified in the

MpegStream line parameter.