I have had a Roland Juno 6, which was in fact a Juno 60 without memory. I created a special sheet with all the parameters of the Juno 6. I had to estimate the value of each parameter and "saved" those estimates settings in that sheet and "recall" them from that sheet whenever I needed a certain sound. I would have liked to have even some kind off a display.....

 

Good times, I did something similar whenever I ran into a nice sound on patchless devices. I'm pretty sure I had pages of 909 bass drum settings.

These days it's simple: I record a few bars for reference, then take a picture of the knobs and save it in my project folder.

 

Back to topic If you want this you can do IT with every Behringer Clone nowdays when you Like

 

Right I remember, at school we had more or less the same PC, and the Hymem and all the Config.sys and Autoexec.bat tampering was used also in my assembled 486 many years later, after all it was still a DOS 6.22.
Things improved a lot with Win95, for which I assembled a Pentium 300MHz.

I was wrong about RAM initialization of SY99, it was used for samples/MDR function, not samples/SYSEX.
Midi Data Recorder:

And BTW SY99 had also master keyboard capabilities.