Casio XW-P1 User Manual

The Parameter ID indicates the parameter type. When transferring parameters (see “V Parameter
List” below) individually (as opposed to bulk transfer), this field is used to identify the parameter being
transferred by its parameter ID.
16.3.11 idx : Data Index Number
Format: LSB 0iiiiiiiB
MSB 0jjjjjjjB
The data index number indicates the first array number of the array from which transfer starts.
16.3.12 len : Data Length
Format: LSB 0lllllllB
MSB 0mmmmmmmB
As shown below, the meaning of this field differs depending on whether an individual transfer or a
bulk parameter set transfer is being performed.
Individual Parameter Transfer The value of this field specifies the size of the parameter value
stored in the data field. Data length indicates the length of the array being transferred minus 1 when
the parameter contains a character string or other similar array structure.
Bulk Parameter Set Transfer The value of this field specifies the size of the parameter set memory
image stored in the img field. Data length indicates the number of bytes of data included within a packet.
When this value is zero, it means the data itself does not exist.
16.3.13 data : Parameter Data
Individual Parameter Transfer
Format: index0 0dddddddB (0eeeeeeeB) (0fffffffB) (0gggggggB) (0hhhhhhhB)
index1 0dddddddB (0eeeeeeeB) (0fffffffB) (0gggggggB) (0hhhhhhhB)
index2 0dddddddB (0eeeeeeeB) (0fffffffB) (0gggggggB) (0hhhhhhhB)
: :
indexN 0dddddddB (0eeeeeeeB) (0fffffffB) (0gggggggB) (0hhhhhhhB)
Parameter data indicates the parameter value. Data is repeatedly placed in an array of the size equiv-
alent to len+1. For the structure of one data item, the length depends on the data bit width(Parameter
List Size), as shown below.
Size Number of Data
1 - 7 1
8 - 14 2
15 - 21 3
22 - 28 4
29 - 32 5
Each block of data is packed from the lowest order byte first. In the case of multiple-byte data, the
lowest weighted bit is the least significant digit of the first data byte, and the highest weighted bit is
the most significant digit of the final data byte. The following shows an example of how data would be
divided for transfer in the case of 32-bit data.
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Casio XW-P1 Specifications

General

Polyphony	64 notes
Arpeggiator	Yes, 6 types
Power Supply	D batteries x 6, AC Adapter
Dimensions	95.7 x 39.7 x 11.1 cm
Weight	13.2 lbs
Effects	Reverb, Chorus, Delay, Distortion, Rotary Speaker
Display	LCD
User Tones	100
Inputs/Outputs	USB
User memory	100 user tones
Controllers	Pitch Bend Wheel, Modulation Wheel
Inputs	Line In
Outputs	1/4" L/Mono, R output
Keyboard	61 keys
Connections	USB