Speaking of tape files, I was attempting to load this copy of Planet Miners in the a400/800 drivers and kept getting timeouts. I was able to load the Apple II version on the same side fine (seek to 753 before loading). Is it due to the volume of the capture? The command line I used was
mame a400 -sio cassette -cass planet_miners_side_a.wav -cart1 OSSBasicXL103.car