i-Magic Catalyst (.pgm) program file format

Introduction

As for the Fortius files, whenever fields have units associated with them, such as weight, distance etc., the Tacx software stores the SI unit any only converts to the Imperial system for display purposes.

Single Byte characters (ASCII) are used throughout.

An .pgm file contains the following data blocks.

General information.
Course data.
Course information.

General Information Block

Field	Offset	Size	.NET type	Comments
No. of program records	0	2	UInt16
Total		2

Course Data Block

Field	Offset	Size	.NET type	Comments
Distance	0	8	Double	km
PulseSlopeWatt	4	8	Double	Pulse or slope or power
Duration	12	4	UInt32	seconds
Total		20

Course Information Block

Field	Offset	Size	.NET type
Course name length	0	1	Byte
Course name	1	Course name length	Char[]
WattSlopePulse	1 + Course name length	4	UInt32
TimeDist	5 + Course name length	4	UInt32
Total		9 + Course name length

The values of the WattSlopePulse and TimeDist fields indicate the type of catalyst program in use, based on the following table.

	0	1	2
WattSlopePulse	Watt	Slope	Pulse
TimeDist	Time	Distance

For example, if WattSlopePulse was 1 and TimeDist was 0, the catalyst program would be a Slope - Time based one.