BKBTL -- BK Back to Life! -- is BK0010/BK0011 emulator... BK is soviet home computer based on 16-bit PDP-11 compatible processor K1801VM1.

 

Emulated:

BK-0010.01 and BK-0011M
CPU (still closer to 1801VM2)
Motherboard (partially)
Screen -- black and white mode, color mode, short mode, BK0011 color mode palettes
Keyboard (but mapped not all BK keys)
Reading from tape (WAV file), writing to tape (WAV file)
Sound
Joystick (numpad keys, external joystick)
Covox
Floppy drive (at least in BK11M configuration)
Programmable timer (partially)