SEP (PS Multi-Track Sequence Data)

Package of several SEQ data files managed as one file.

Overview

A SEP is a package that contains several SEQ data files, so that the SEQ files can be managed as one file. A program accesses one SEQ in the package by the ID number returned when the SEP is opened and by the SEQ number. The access functions are described in the Run-Time Library Reference.¹

Structure

The SEP opens with an ID and a version. Each SEQ in the package then follows with its own SEQ ID, timing fields and data size, and its score data runs to an end-of-SEQ marker. The fields and their byte counts are shown below.²

Figure 200 of the manual gives the tempo field as 3 bytes for SEQ 0 but 2 bytes for SEQ 1. The table above follows SEQ 0.²

References