647714

Roland XV-5080 Manual

303
Zoom out
Zoom in
Previous page
1/312
Next page
303
MIDI Implementation
Appendices
during the song and then rewound or fast-forwarded, the sequencer may not be able to
transmit the correct status, and the sound generator will then misinterpret the data. Take
care to give each event its own status.
It is also necessary that the RPN or NRPN parameter number setting and the value setting
be done in the proper order. On some sequencers, events occurring in the same (or
consecutive) clock may be transmitted in an order different than the order in which they
were received. For this reason it is a good idea to slightly skew the time of each event (about
1 tick for TPQN = 96, and about 5 ticks for TPQN = 480).
* TPQN: Ticks Per Quarter Note
●
Example of an Exclusive message and calculating a
checksum
Roland Exclusive messages (RQ1, DT1) are transmitted with a checksum at the end (before
F7) to make sure that the message was correctly received. The value of the checksum is
determined by the address and data (or size) of the transmitted Exclusive message.
❍
How to calculate the checksum (hexadecimal numbers are indicated by
"H")
The checksum is a value derived by adding the address, size, and checksum itself and
inverting the lower 7 bits.
Here's an example of how the checksum is calculated. We will assume that in the Exclusive
message we are transmitting, the address is aa bb cc ddH and the data or size is ee ffH.
aa + bb + cc + dd + ee + ff = sum
sum ÷ 128 = quotient ... remainder
128 - remainder = checksum
<Example 1> Setting CHORUS TYPE of PERFORMANCE COMMON to DELAY (DT1).
According to the "Parameter Address Map (p. 290)", the start address of Temporary
Performance is 10 00 00 00H, the offset address of CHORUS at PERFORMANCE COMMON
is 04 00H, and the address of CHORUS TYPE is 00 00H. Therefore the address of CHORUS
TYPE of PERFORMANCE COMMON is;
10 00 00 00H
04 00H
+) 00 00H
10 00 04 00H
DELAY has the value of 02H.
So the system exclusive message should be sent is;
F0 41 10 00 10 12 10 00 04 00 02 ?? F7
(1) (2) (3) (4) (5) address data checksum (6)
(1) Exclusive Status, (2) ID (Roland), (3) Device ID (17),
(4) Model ID (XV-5080), (5) Command ID (DT1), (6) End of Exclusive
Then calculate the checksum.
10H + 00H + 04H + 00H + 02H = 16 + 0 + 4 + 0 + 2 = 22 (sum)
22 (sum) ÷ 128 = 0 (quotient) ... 22 (remainder)
checksum = 128 - 22 (remainder) = 106 = 6AH
This means that F0 41 10 00 10 12 10 00 04 00 02 6A F7 is the message should be sent.
<Example 2> Getting the data (RQ1) of Performance Part 3 in USER:03.
According to the "Parameter Address Map (p. 290)", the start address of USER:03 is 20 02 00
00H, and the offset address of Performance Part 3 is 00 22 00H.
Therefore the start address of Performance Part 3 in USER:03 is;
20 02 00 00H
+) 00 22 00H
20 02 22 00H
As the size of Performance Part is 00 00 00 21H, the system exclusive message should be
sent is;
F0 41 10 00 10 11 20 02 22 00 00 00 00 21 ?? F7
(1) (2) (3) (4) (5) address data checksum (6)
(1) Exclusive Status, (2) ID (Roland), (3) Device ID (17),
(4) Model ID (XV-5080), (5) Command ID(RQ1), (6) End of Exclusive
Then calculate the checksum.
20H + 02H + 22H + 00H + 00H + 00H + 00H + 21H = 32 + 2 + 34 + 0 + 0 + 0 + 0 + 33 = 101
(sum)
101 (sum) ÷ 128 = 0 (quotient) ... 101 (remainder)
checksum = 128 - 101 (remainder) = 27 = 1BH
This means that F0 41 10 00 10 11 20 02 22 00 00 00 00 21 1B F7 is the message should be sent.
<Example 3> Getting Temporary Performance data (RQ1);
cf.) This operation is the same as Data Transfer function in Utility mode with "PERFORM"
(Type parameter) and "TEMP: -PATCH" (Source parameter) options.
According to the "Parameter Address Map (p. 290)", the start address of Temporary
Performance is assinged as following:
10 00 00 00H Temporary Performance Common
:
10 00 20 00H Temporary Performance Part 1
:
10 00 3F 00H Temporary Performance Part 32
As the data size of Performance Part is 00 00 00 21H, summation of the size and the start
address of Part 32 at Temporay Performance will be;
10 00 3F 00H
+) 00 00 00 21H
10 00 3F 21H
And the size that have to be got should be;
10 00 3F 21H
-) 10 00 00 00H
00 00 3F 21H
Therefore the system exclusive message should be sent is;
F0 41 10 00 10 11 10 00 00 00 00 00 3F 21 ?? F7
(1) (2) (3) (4) (5) address data checksum (6)
(1) Exclusive Status, (2) ID (Roland), (3) Device ID (17),
(4) Model ID (XV-5080), (5) Command ID (RQ1), (6) End of Exclusive
Calculating the checksum as shown in <Example 2>, we get a message of F0 41 10 00 10 11
10 00 00 00 00 00 3F 21 10 F7 to be transmitted.
<Example 4> Getting data (RQ1) at once;
Tempory Performance data,
Temporary Patch data of whole part in Performance mode,
Temporary Rhythm data of whole part in Performance mode.
cf.) This operation is the same as Data Transfer function in Utility mode with "PERFORM"
(Type parameter) and "TEMP: +PATCH" (Source parameter) options.
According to the "Parameter Address Map (p. 290)", the start address of the
above all parameters is assinged as following:
10 00 00 00H Temporary Performance
11 20 00 00H Temporary Patch (Performance Mode Part 1)
11 30 00 00H Temporary Rhythm (Performance Mode Part 1)
:
14 60 00 00H Temporary Patch (Performance Mode Part 16)
14 70 00 00H Temporary Rhythm (Performance Mode Part 16)
The offset address of Rhythm is also assigned as follows:
00 00 00H Rhythm Common
:
00 10 00H Rhythm Tone 1
:
01 3E 00H Rhythm Tone 4
… 303 …


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for Roland XV-5080 at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of Roland XV-5080 in the language / languages: English as an attachment in your email.

The manual is 4,28 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info