I have an old Commodore Datasette (actually from a Commodore Plus/4) that is sitting around doing nothing.
How difficult would it be to convert it to have the REM/AUX/EAR sockets required by a standard tape cable used by the 6128?
Datasette seems to have:
1 GND
2 +5V
3 MOTOR
4 READ
5 WRITE
6 SENSE
7 GND
CPC has:
1 REMOTE
2 GND
3 REMOTE
4 DATA IN (read)
5 DATA OUT (write)
So it looks like the Commodore component would need an external power supply to work since the CPC has no +5V line on its tape socket.
I think the "remote" is the "motor" line on the Commodore datassette, but i could be wrong.