A few days ago Massi cadenti sent me a few TAP files for C16 for my tests with DC2N.
The titles on these files use a quite interesting tape loader: This is the one loader that required significant change in MTap and to the TAP format (i.e. TAP version 2 as proposed by Markus Brenner) in order to support the so called “halfwaves”. Long story short, this clever loader does not use FSK but a simpler, yet faster, time based encoding.
I just disassembled it and looked at the titles using it: no doubt, this is a freezer’s tape loader – the equivalent of the C64 Action Replay’s superturbo but for C16!