@AtariLeaf Bosconian use $100 page (from $0100 to $0166) , but $400 no.I debug Atarimax loader is standard load from $0100 to $01EE.
What a superb port you did!! Do you have any plan to port it into a cartridge? So you can use the samples into the banks and make them work on 64k.
Also, you can load the xex using the loader on the $700 address. I think its the standard for nearly every xex file.