However, I have seen a very ugly thing:
In sys/arch/init_intr.c, init_intr(), the ACIA vector 0x118 is replaced by
new_acia(), implemented in sys/arch/acia.S. Compared to the standard EmuTOS
routine, that one does 2 important things:
1) It ignores any MIDI data !
and at the time of writing of keyboard.c, as far as I can remember, there
was not way to run the GEM from ROM (it was thought useless as well -
honestly I don't know why anyone would do that, the ROM AES is crap).
For me, the GEM=ROM feature is one of the best features of MiNT.