The Message Window

The VL70-m Message Window function makes it possible to display text messages up to 32

characters in length on the VL70-m display in the PLAY mode. The messages can be transmitted in the form of a data string from an external MIDI device, and will appear on the VL70-m display for about 3 seconds. A message could be placed at the beginning of a song data file, for example, so that the title of the song and other information appears on the display at the beginning of the song.

Message

■Message Window Data Format

The format for message window data is as follows (hexadecimal format):

F0 43 1n 4C 06 00 00 xx xx .... xx xx F7

“n” is the device number minus one. If the VL70- m device number is set to “1”, for example, “n” should be “0”.

“xx xx .... xx xx” is the text data. Each character is

represented by a single ASCII -code byte (2 hexadecimal digits). Refer to the chart below for the ASCII code for each displayable character. The numbers in the top row are the first digit and the numbers in the leftmost column are the second digit in the byte representing each character. The capital letter “A”, for example, is represented by hexadecimal byte “41”.

 

0

1

2

3

4

5

6

7

 

 

 

 

 

 

 

 

 

0

 

 

(space)

0

@

P

`

p

1

 

 

!

1

A

Q

a

q

2

 

 

"

2

B

R

b

r

3

 

 

#

3

C

S

c

s

4

 

 

$

4

D

T

d

t

5

 

 

%

5

E

U

e

u

6

 

 

&

6

F

V

f

v

7

 

 

'

7

G

W

g

w

8

 

 

(

8

H

X

h

x

9

 

 

)

9

I

Y

i

y

A

 

 

*

:

J

Z

j

z

B

 

 

+

;

K

[

k

{

C

 

 

,

<

L

¥

l

 

D

 

 

-

=

M

]

m

}

E

 

 

.

>

N

^

n

–

 

 

 

F

 

 

/

?

O

_

o

 

 

 

 

 

 

 

 

 

 

The message “HELLO VL70-m” would be displayed by transmitting the following data string to the VL70-m:

F0 43 1n 4C 06 00 00 48 45 4C 4C 4F 20 56 4C 37 30 2D 6D F7

H E L L O V L 7 0 - m

104Appendix