Back in the 80s I had a TRS80 with 5 inch floppy drive, and an Amstrad CPC464 with built in cassette tape.
Having no patience to wait for games to load, I linked the two together via the parallel printer interfaces and wrote some Z80 code on either end to allow the TRS80 to store CPC464 programs.
I seem to remember only being able to use 6 of the bits for data, and using a couple of the others to signal as "clear to send" between them. The transfer was very quick, much faster than tape, but wasn't very reliable due to the dodgy connectors on the TRS80.
Using an SD card with the old micros would be miles better.
Having no patience to wait for games to load, I linked the two together via the parallel printer interfaces and wrote some Z80 code on either end to allow the TRS80 to store CPC464 programs.
I seem to remember only being able to use 6 of the bits for data, and using a couple of the others to signal as "clear to send" between them. The transfer was very quick, much faster than tape, but wasn't very reliable due to the dodgy connectors on the TRS80.
Using an SD card with the old micros would be miles better.