I was looking through the Aleste 520EX documentation and what I found interesting was the very minimal changes to the CPC ROMS to work on the Aleste.
Since the Aleste also had another OS, MSXDOS - has anyone tried it on the CPC? Is there a dump of that ROM anywhere or a disassembly?
https://www.cpcwiki.eu/imgs/a/a1/AlesteBiosDisassembly.txt