hmm, i'm using the linux version. cant find a counter here, needs some improvements, it seems
thanks for the links.
Edit: here is a turbotape version, which uses "<-L" syntax (seen the question on youtube):
Edit2: found something new: http://www.archivum.info/comp.sys.cb.../msg01156.html
C64 Speed-Tape cartridge. found the dump (not tested):
"REX 9510 Speed-Tape"