Writing to unknown register when loading a Gameboy game in Super Game boy

[Cibomatto2002]

[INFO] GB: Resizing SRAM to 0 bytes
[STUB] GB I/O: Writing to unknown register FF4F:00
[STUB] GB I/O: Writing to unknown register FF68:00
[STUB] GB I/O: Writing to unknown register FF6A:00
[STUB] GB I/O: Writing to unknown register FF70:01
[STUB] GB I/O: Writing to unknown register FF51:FF
[STUB] GB I/O: Writing to unknown register FF52:FF
[STUB] GB I/O: Writing to unknown register FF53:FF
[STUB] GB I/O: Writing to unknown register FF54:FF
[DEBUG] GB Serial I/O: Lockstep 0: Node init
[STUB] GB I/O: Writing to unknown register FF44:00
[INFO] GB: Resizing SRAM to 0 bytes
[STUB] GB I/O: Writing to unknown register FF4F:00
[STUB] GB I/O: Writing to unknown register FF68:00
[STUB] GB I/O: Writing to unknown register FF6A:00
[STUB] GB I/O: Writing to unknown register FF70:01
[STUB] GB I/O: Writing to unknown register FF51:FF
[STUB] GB I/O: Writing to unknown register FF52:FF
[STUB] GB I/O: Writing to unknown register FF53:FF
[STUB] GB I/O: Writing to unknown register FF54:FF
[DEBUG] GB Serial I/O: Lockstep 0: Node init
[STUB] GB: Unimplemented SGB palette overflow: 5555
[STUB] GB: Unimplemented SGB palette overflow: 5555
[STUB] GB: Unimplemented SGB palette overflow: 5555
[STUB] GB: Unimplemented SGB palette overflow: 5555

[endrift]

Fixed in 41e0014, though doing this in the first place is of questionable utility.

E] Don't worry about those warnings, they don't mean anything.

[Cibomatto2002]

I was thinking if I loaded a gameboy game in super gameboy I would see something like this.

[endrift]

Unfortunately most of those assets are on the SNES side, which is HLE emulated. Without the SNES ROM there's no much you can do there.