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DX7 Special Edition ROM splash screen text edit?


 

Hi there,

I opened up the DX7 SER7 .bin file in a hex editor and was wondering, is it possible to change the splash screen text from

WELCOME TO? DX7
SPECIAL EDITION

to something else by editing the .bin in a hex editor? Assuming I stick to 16 characters per line.

Thanks!


 

Many years ago I have translated similar ASCII codes to different languages in some ATARI ST programs this way, and it was successful.

If there’s no checksum somewhere in the end of the BIN file, it can work. In the worst case DX7 will not boot...

Daniel Forró

On Aug 12, 2021, at 1:11, ethan@... wrote:

Hi there,

I opened up the DX7 SER7 .bin file in a hex editor and was wondering, is it possible to change the splash screen text from

WELCOME TO DX7
SPECIAL EDITION

to something else by editing the .bin in a hex editor? Assuming I stick to 16 characters per line.

Thanks!


 

Yes, you can. Did this some years ago on a friend's DX7 Mk.I with original firmware - put in his name instead of the Yamaha splash screen ;-)

Please see attached pic - the green surrounded area(s) you can use to fill in an own 'message'. All characters you 'don't use' please fill up with a 'Space' (in hex: 20). You're only allowed to use those specific 32 'places' for your message! If you 'move' any of the other code the DX may not? or not properly work anymore!


 

Thanks, I realized that when I opened the ROM in my hex editor. Now to get some EPROMS and a writer & eraser!