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MultiBank Cartridge for DX7II and DX7 MKI


 

I suspect there'd be no need to use high density controllers for this, as a maximum of 128 banks would be more than enough. But wouldn't this require some recoding of the firmware to make it possible to do this?

Sent from my HAL 9000 in transit to Jupiter

-----Original Message-----
From: YamahaDX@... [mailto:YamahaDX@...]
Sent: Wednesday, June 26, 2019 6:20 PM
To: YamahaDX@...
Subject: [YamahaDX] Re: MultiBank Cartrdige for DX7II and DX7 MKI



Can you access the HCART's additional banks via MIDI Bank Select (MSB: control change 0, LSB: control change 32) messages from a sequencer or suchlike?


 

Yes, not only would it require a firmware change for the MIDI commands, but the signals aren't present on the cartridge connector either.

I totally agree that 128 patches is more than enough for most people.? 32 is definitely cramped and anything above 128 becomes time-consuming to manage (loading, saving, formatting ... all very slow). 128 also gets you in the sweet spot for access via MIDI Patch Change (you can access them all with no fuss).


 

Actually I need to amend that. I don't have time to look at the manual and schematics at the moment, but I think you could only access 128 patches ("voices") *INTERNALLY* and that would require firmware (OS EPROM change) and hardware (more RAM obviously).? Many of the expansions do this.

For the CARTRIDGE slot it's even worse since, as mentioned there are no more signals available across the cartridge connector so quite a few (more) hurdles would be required to overcome that.


 

I suspected as much, though I didn't know about the hardware limitations for the cartridge port.
So that's sounding like a resounding no to MIDI bank change.

Sent from my HAL 9000 in transit to Jupiter

-----Original Message-----
From: YamahaDX@... [mailto:YamahaDX@...]
Sent: Thursday, June 27, 2019 10:26 AM
To: YamahaDX@...
Subject: RE: [YamahaDX] Re: MultiBank Cartridge for DX7II and DX7 MKI



Yes, not only would it require a firmware change for the MIDI commands, but the signals aren't present on the cartridge connector either.

I totally agree that 128 patches is more than enough for most people. 32 is definitely cramped and anything above 128 becomes time-consuming to manage (loading, saving, formatting ... all very slow). 128 also gets you in the sweet spot for access via MIDI Patch Change (you can access them all with no fuss).


 

Isn't there a way to load different cartridge banks via sysex? So what'd be needed is a translation from the sysex to CC information. That said, I know of no cartridge capable of 128 banks, much less more than that, and cartridges hold 32 patch A and B blocks as available, which is why you can get the 128 patch numbers received from MIDI program change. So it's not going to be optimum no matter how you slice it.
I built my 128 patch map from a lot of sound banks on several floppies back in the day, also using a patch librarian, and I was sort of hard pressed to find enough sounds I wanted on the machine. So I'm thinking the desire for more than a full internal A/B Cartridge A/B patch setup is probably somewhat small. Also, FM7/8 does this, so the need for that many sounds can be handled in other ways.

Sent from my HAL 9000 in transit to Jupiter

-----Original Message-----
From: YamahaDX@... [mailto:YamahaDX@...]
Sent: Thursday, June 27, 2019 10:59 AM
To: YamahaDX@...
Subject: RE: [YamahaDX] Re: MultiBank Cartridge for DX7II and DX7 MKI



Actually I need to amend that. I don't have time to look at the manual and schematics at the moment, but I think you could only access 128 patches ("voices") *INTERNALLY* and that would require firmware (OS EPROM change) and hardware (more RAM obviously). Many of the expansions do this.

For the CARTRIDGE slot it's even worse since, as mentioned there are no more signals available across the cartridge connector so quite a few (more) hurdles would be required to overcome that.