It sounds like your Korg Karma does not have a USB slot?
You could record each MIDI pattern in real-time from the Karma into Logic?
Or see if you can find any manufacturer that makes floppy drives compatible with your Mac.
I can't think of another solution, except finding an old computer with a floppy drive that you can copy the data from floppy onto USB somehow.
Hope that helps
I'm not familiar with the Korg Karma, but perhaps this will help - as Logic can't be slave to MIDI since version 8.