Hi Michael,
On 26/05/2020 15:54, Michael Whocares wrote:
Does this help?
thanks a lot, that is great.
But from a first check, the DX21 firmware and that of the DX100 are completely different. In the DX100 the rom starts with code and ends with the voices, in the DX21 it's the other way round. Also the DX100 uses only 43 bytes per voice, so no simple direct comparison between those two. And that although they use the same MPU (HD63B03XP in DX21 and HD6303XP in DX27S),only difference is the speed of the processors.
Okay, now I have a reason to desolder the rom from my DX27s and read that out... Unless someone has the firmware of the DX27s?
Cheers, Florian
