As I wasn't too content with Doc Bacardi writing the coolest MMC64 plugin, I resumed my work on D64 plugin which allows mounting disk images as drives
You can find current version
here. (@RaveGuru: don't bother putting it into Uploads yet, it's changing without warning. Thanks.)
Directory display in entry screen doesn't work, but that's low priority.
Load "$" works, as well as program loading. Open/get/close works as well, at least for me. Some multiloads works, some others don't.
If you have Silversurfer, start terminal program with 8N1@115200 and you get plenty of debug data.
@Doc: I'm not going to try latest DFI version, I fear it might work too well and I would lose my motivation
Edit: It should now work with Silversurfer even when it's not connected to PC. If your RS232 cable connects DSR at both ends you need to disconnect it at C64 end to avoid infinite loop.
Edit2: Last sector was always completely loaded, resulting in overwriting memory. Jumpman now works

. There is also preliminary support for command channel, you get power-on message and "00, ok, 00,00" message after that.