./tc512 -v /dev/st0 test.tap
file 0 record length 512: 1 record (0)
end of file 0, 512 bytes
file 1 record length 512: 5 records (0..4)
file 1 record length -1: 3 records (5..7)
file 1 record length 512: 1 record (8)
end of file 1, 3069 bytes
file 2 record length 512: 5 records (0..4)
file 2 record length -1: more than 10 sequential errors