Specifications

D.1 Principles
The Navigator/Pathfinder linking system uses the MIDI ‘System
Exclusive’ command structure. This consists of a data packet with
the following structure:
D.2
System exclusive usage
Although the MIDI system uses 8-bit data, bit 7 is reserved as a trip
bit to indicate that the lower 7 bits contain a command byte.
As the MIDI linking system contains 8-bit data it is necessary to
encode the data so that the bit 7’s are clear, to avoid being
confused with command bytes.
Byte Description
1
2
System exclusive code
1=F0
H
2=00
H
3
4
Manufactures’ code
3=20
H
Celco
4=14
H
5 Product code
01
H
Navigator console
02
H
–FF
H
Reserved.
6 Data type code
Thisindicatesthetypeofthedatainbytes7...Last-1.
01
H
Short data block
02
H
Long data block
03
H
–FF
H
Not used
7 Data bytes
Refer to section D.3 for format of data.
Last End of exclusive code
F7
H
EOX
Navigator Operators Manual
144 EPD01003 Issue 3 (30/06/94)