I need a V of 8 bytes in my sysex

Question

Is it easy to implement the possibility to have 8 bytes in your V value in sysex? At this moment the limit is 3. I ran into a situation in which I need a V value of 8 bytes.

Comments

The problem with 8 bytes is that it requires changes to the data structure (easy) but will also have some UI implications. What is the use-case, if I may ask? Thanks!

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I wanted to take a crack at the Roland V-Synth GT which I own. The V-Synth GT has samples that I can select. Selecting a sample needs a V of 4 bytes. Setting an offset in the sample needs a V of 8 bytes. If the UI implications are too heavy let me know, because I don't want to spend time on the V-Synth then because the samples are a crucial thing in the V-Synth.

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Thanks, so I'm just doing some cursory research: where are you seeing this? I'm looking at this guide: http://lib.roland.co.jp/support/en/manuals/res/1810973/V-SynthGT_MIDI_Imple_e1.pdf

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For example page 14.

Look at 00 28 (OSC1 Wave Number) which is 4 bytes and 00 2c (OSC 1 Start Offset) which is 8 bytes. Upon further inspection there are also more 4 bytes situations. For example, the vocoder parameters on the same page are 4 bytes. Or the AP-S parameters on page 13 are 4 bytes.

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Okay, will check it. This  might take some time, though: too much going on in the 1.6 release to add new features. Getting the stuff we have added to work bug-free is already a challenge.

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I probably don't have to tell you, but don't try to implement too many things at the same time. Stabilize the 1.6 release first before you undertake any other additions.

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Thanks so much @ezb, in fact the 1.6 release has a LOT of changes. Thanks to a long alpha period it looks quite stable so far... (also in other news, please send us that crashing layout so we can track that bug down)...

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I just sent you the layout again. Please let me know if you received it.

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got it but so far cannot replicate the crash ;(... Hmmm.....

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I have a lot of Roland gear but have not seen 8 byte values in Sysex
I think you might be confusing a bit with byte ...8 byte is a huuuuge number that no synth use for defining value the most I'd see is 32k values and that fits to 3 nibble bytes

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Ok, check this manual on page 14.

http://lib.roland.co.jp/support/en/manuals/res/1810973/V-SynthGT_MIDI_Imple_e1.pdf

Osc 1 Start Offset

8 bytes. If you can solve this in another way I am all ears.