Sys ex. assign items, P. 79)), Specifying the checksum – Roland PCR-1 User Manual
Page 79
79
Use MIDI functionality
■
Sys Ex. ASSIGN items
•
•
Specifying the location of the data
•
Specifying the checksum
The PCR-1 can automatically calculate the checksum of a system exclusive message and embed
it in the message. In order to use this function, you must use the following procedure to specify
the starting location from which the checksum is calculated, and the location at which the
checksum is inserted. You can also select the type of checksum.
For an actual example, please read the Sys Ex.ASSIGN section
fig.css
1.
Press the
[CHECKSUM]
key before you input the byte at which checksum
calculation should begin.
The display will indicate “CSS” (Checksum Start).
If you press the
[CHECKSUM]
key once again, “CSS” (Checksum Start) will be cancelled.
2.
Press the
[ENTER]
button.
3.
Continue inputting data.
fig.cs1
4.
Press the
[CHECKSUM]
key at the location where the checksum should be
inserted.
The display will indicate “CS1” (Checksum type 1).
5.
Press the
[ENTER]
button.
Checksum types
There are two types of checksum, as follows.
fig.cs12
Switching the type
If you want to switch to
type 2
, press the
[2]
key after you press
[CHECKSUM]
in step 4.
To switch back to
type 1
, press the
[1]
key.
1
CHECKSUM TYPE 1
This is the method used by Roland and most
other manufacturers
2
CHECKSUM TYPE 2
Select this if the method other than type 1 is
used
[2]
[CHECKSUM]
[1]
*1
[CHECKSUM]
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