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yamaha qy300 memory full

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I know this is a shot in the dark but would it be a mammoth task to increase the hardware ram memory in this sequencer?
I only have to load a couple of big SMF's and the qy300 can't take any more. thanks for any help.
 

I really don’t know for certain since I am not an electrical engineer, but I would think that increasing the memory size would be somewhat difficult on a QY300…. Or any QY device… The reason being is often the amount of memory is not just what’s available, but how it’s encoded in the program itself… There may be internal checks to make sure that the amount of memory does not go over 256K, regardless of how much actual memory is physically available… The only way to know for sure is if you could reverse engineer the entire firmware, which I think is pretty much impossible without a lot of help from Yamaha. ?There are certainly many other devices where the firmware is open source or someone available based on the chip… But I don’t think Yamaha falls into the category. ?


Case in point: There has been many requests for people to be able to reverse engineer the file format that Yamaha uses to save QY data, and it is a rather arduous task without any specifications from Yamaha… Of course, strides have been made, but even after this long, it remains more of a dream that a reality… And that’s just parsing a file format… Firmware is far more complex and integrated into the hardware IMHO.

Not to say that just physically increasing the memory would not work, but be on the electrical engineering challenges, there may be programming challenges as well… And I imagine the electrical engineering challenges would be pretty extreme as well… So I guess the short answer (in my humble opinion) is probably not…. of course, I would certainly say that it’s possible… I mean, I’m a firm believer that anything is possible… But I think the effort would be extreme.

Hopefully there are some electrical engineers or maybe even a Yamaha technician that could chime in with a more definitive answer.

Best Regards,
Eric
--

“The longest journey starts with the first step." ?- Lao Tzu
 

I regularly have this issue even without large SMF files.?
On the QY 100 you can use Smartmedia card and load direct.
Alternatively if you have SMF with a large amount of data and notes, you could extract repeated phrases (see job menu) and copy into up to 8 instruments into patterns and then set up song mode to repeat those patterns in bite sized chunks.
 

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You just need to get a new memory chip, and afterwards, design a new motherboard, adjust any path (and controller) to access the new registers and reprogram the firmware.?

On Mar 12, 2024, at 8:55?AM, neuronetv@... wrote:

?I know this is a shot in the dark but would it be a mammoth task to increase the hardware ram memory in this sequencer?
I only have to load a couple of big SMF's and the qy300 can't take any more. thanks for any help.

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thankyou yes thats exactly what I've been thinking today.
99% of all modern songs are simply repeating patterns that I could - as you say - import into the pattern memories and play the file that way. I'm confident that could drastically reduce the midi file size.
it's a headache of a job but might be worth it once done.

On Tue, Mar 12, 2024 at 4:26?PM SeqMark via <markbarratt6=[email protected]> wrote:
I regularly have this issue even without large SMF files.?
On the QY 100 you can use Smartmedia card and load direct.
Alternatively if you have SMF with a large amount of data and notes, you could extract repeated phrases (see job menu) and copy into up to 8 instruments into patterns and then set up song mode to repeat those patterns in bite sized chunks.
Anthony Griffiths
 

thankyou, I think modifying the midi file size is the way to go.

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