A80 file
A80 files contain Z80 file data.
We assume this is a kind of onboard Archive file go save constantly loading the data from CD.
How this data is used is not yet fully known we currently assume data is stored in the program ROM space and then moved to the correct place as needed. It is not known if this is handled by the bios or game at present.
The game 'Neo Turf Masters' is known to use this file type.