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#1670582 - 05/03/11 11:32 AM Weird RD-700NX/RD-300NX MIDI implementation
Epeios Offline
Full Member

Registered: 03/28/11
Posts: 28
Loc: France
I'm currently writing some C++ libraries and programs which handle parameters of Roland instruments using MIDI SysEx messages. It works for the V-Piano and the VK-77. I am now working on the RD-700NX, so I downloaded on Roland's website the file named 'RD-700NX_MI2.pdf' for the MIDI implementation of this device.
According to this document, the first 'System Favorite Live Set' parameter is at address '00 00 03 00' , and the last one at address '00 00 04 25'. But the first 'System V-Link' parameter is at address '00 00 04 00', so it will be at the same address that one of the 'System Favorite Live Set' parameter ! And almost the same goes for the RD-300NX.
I own neither of this 2 devices, so I can't make further investigations.
Is there, in fact, an error (hopefully, in the documentation) or did I miss something ?
_________________________
V-Piano
YouTube : http://www.youtube.com/user/Panopeus/
WEB site : http://zeusw.org/ (French), http://zeusw.org/intl/ (~English)
eRISM (http://zeusw.org/intl/erism), to manage settings of Roland instruments.

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#1670608 - 05/03/11 12:11 PM Re: Weird RD-700NX/RD-300NX MIDI implementation [Re: Epeios]
Kawai James Offline
Yikes! 10000 Post Club Member

Registered: 09/06/07
Posts: 11318
Loc: Hamamatsu, Japan
Surely one to ask dewster?

James
x
_________________________
Employed by Kawai Japan, however the opinions I express are my own.
Nord Electro 3 fan & occasional rare groove player.

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#1670679 - 05/03/11 01:59 PM Re: Weird RD-700NX/RD-300NX MIDI implementation [Re: Epeios]
dewster Offline
4000 Post Club Member

Registered: 12/07/09
Posts: 4675
Loc: Northern NJ
Originally Posted By: Epeios
Is there, in fact, an error (hopefully, in the documentation) or did I miss something ?

SYSEX address space is defined in three sections, kind of a shorthand that programming references often use:

1. Base, or start addresses:
00 00 00 00 System Base Address
10 00 00 00 Live Set Base Address

2. Primary address offsets:
00 00 00 System Common
00 02 00 System Compressor
00 03 00 System Favorite Live Set
00 04 00 System V-Link
00 05 00 System Switch Assign

00 00 00 Live Set Common
00 02 00 Live Set Song/Rhythm
00 04 00 Live Set Chorus
00 06 00 Live Set Reverb
etc.

3. Secondary address offsets:
(a bunch, see the manual)

If you get your hands on an RD-700NX make sure it has the latest firmware or you won't get any responses via SYSEX.
_________________________
The DPBSD Project!
THE RD-700NX Thread!
DPs Exposed! (nekid pichures!)
!IMO!

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#1681558 - 05/20/11 11:40 AM Re: Weird RD-700NX/RD-300NX MIDI implementation [Re: Epeios]
Epeios Offline
Full Member

Registered: 03/28/11
Posts: 28
Loc: France
At p.9, there is :

Code:
* System
+------------------------------------------------------------------------------+
| Offset      |                                                                |
|     Address | Description                                                    |
|-------------+----------------------------------------------------------------|
|    00 00 00 | System Common                                                  |
|    00 02 00 | System Compressor                                              |
|    00 03 00 | System Favorite Live Set      <--                              |
|    00 04 00 | System V-Link                 <--                              |
|    00 05 00 | System Switch Assign                                           |
+------------------------------------------------------------------------------+

You can see that the first 'System Favorite Live Set' parameter is at address '00 03 00' and the first 'System V-Link' parameter at '00 04 00'.

There is also (same page):

Code:
* System Favorite Live Set
+------------------------------------------------------------------------------+
| Offset      |                                                                |
|     Address | Description                                                    |
|-------------+----------------------------------------------------------------|
|       00 00 | 0aaa aaaa | One Touch Piano1 Current Number (0 - 127)          |
|       00 01 | 0aaa aaaa | One Touch Piano2 Current Number (0 - 127)          |
|       00 02 | 0aaa aaaa | One Touch Piano3 Current Number (0 - 127)          |
|       00 03 | 0aaa aaaa | One Touch E.Piano1 Current Number (0 - 127)        |
|       00 04 | 0aaa aaaa | One Touch E.Piano2 Current Number (0 - 127)        |
|       00 05 | 0aaa aaaa | One Touch E.Piano3 Current Number (0 - 127)        |
|-------------+-----------+----------------------------------------------------|
|       00 06 | 0000 00aa | Favorite1 - 40 Live Set Category (0 - 3)           |
|             |           | One Touch Piano, One Touch E.Piano, Preset, User   |
| #     00 07 | 0000 aaaa |                                                    |
|             | 0000 bbbb |                                                    |
|             | 0000 cccc | Favorite1 - 40 Live Set Number (0 - 299)           |
|        :    |           |                                                    |
| #     01 23 |           |                                                    |
|-------------+----------------------------------------------------------------|
| 00 00 01 26 | Total Size                    <--                              |
+------------------------------------------------------------------------------+


This means that the last address used by the 'System Favorite Live Set' parameters is '00 03 00' + '01 26' ('Total Size' on the end of the table) - 1 = '00 04 25'. This implies that address '00 04 00' is used for one of the 'System Favorite Live Set' parameter. But, as I point out below the 'System' table above, at address '00 04 00' is also the first address used by the 'System Favorite Live Set' parameters ! So, how can two different parameters use the same address ?
_________________________
V-Piano
YouTube : http://www.youtube.com/user/Panopeus/
WEB site : http://zeusw.org/ (French), http://zeusw.org/intl/ (~English)
eRISM (http://zeusw.org/intl/erism), to manage settings of Roland instruments.

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#1681760 - 05/20/11 07:49 PM Re: Weird RD-700NX/RD-300NX MIDI implementation [Re: Epeios]
dewster Offline
4000 Post Club Member

Registered: 12/07/09
Posts: 4675
Loc: Northern NJ
Code:
|-------------+----------------------------------------------------------------|
|       00 06 | 0000 00aa | Favorite1 - 40 Live Set Category (0 - 3)           |
|             |           | One Touch Piano, One Touch E.Piano, Preset, User   |
| #     00 07 | 0000 aaaa |                                                    |
|             | 0000 bbbb |                                                    |
|             | 0000 cccc | Favorite1 - 40 Live Set Number (0 - 299)           |
|        :    |           |                                                    |
| #     01 23 |           |                                                    |
|-------------+----------------------------------------------------------------|
| 00 00 01 26 | Total Size                    <--                              |
+------------------------------------------------------------------------------+

I think there might be a screw-up regarding the size. There are 40 Favorite Live Sets, each seems to require a Category (1 byte) and a Number (3 bytes) for a total of 4 bytes.

So: 4 * 40 = 160

Add the starting offset of 6: 160 + 6 = 166 = 0xA6

I'm not super familiar with the whole live set thing so maybe I've got this wrong?
_________________________
The DPBSD Project!
THE RD-700NX Thread!
DPs Exposed! (nekid pichures!)
!IMO!

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#1681950 - 05/21/11 05:44 AM Re: Weird RD-700NX/RD-300NX MIDI implementation [Re: Epeios]
Epeios Offline
Full Member

Registered: 03/28/11
Posts: 28
Loc: France
This was my first thought too, but it's unfortunately wrong, and it has nothing to do with the live set thing.
Actually, addresses are sent as MIDI data, and the MIDI protocol specifies that, for data, the 8th bit have to be at 0, (if the 8th bit is at 1, it's considered as a command). So, you have to jump, for example, from address '00 7F' to address '01 00', to skip all the '00 8x', '00 9x', ..., '00 Fx' addresses (128 values in total). Hence, you have effectively, as you wrote, 160 + 6 = 166 = 0xA6, but you have to add 0x80 (= 128) for the skipped addresses, to obtain the given '01 26' size value ...


_________________________
V-Piano
YouTube : http://www.youtube.com/user/Panopeus/
WEB site : http://zeusw.org/ (French), http://zeusw.org/intl/ (~English)
eRISM (http://zeusw.org/intl/erism), to manage settings of Roland instruments.

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