Go the Z80! Hello from another ex-Spectrum user - was always envious of the TS2068's extra capabilities!!!
I guess AmigaZ80 doesn't provide any access to files stored on the Amiga's filesystem, other than at boot time?
Does it allow access to the Amiga's RS232 port?
And presumably the "-disk a disk.cpm" specifies a virtual "A:" drive using "disk.cpm" as a disk file on the Amiga side? If so, any idea what format these are in? You might be able to find something on the Amiga or PC that'll allow this virtual disk format to be accessed and maybe even written to...
Otherwise, I guess you could give it a go using the same method as for binary executable transfer, though the 100H start address / origin wouldn't be any use there.
Good luck!
- Ali
