hatari-emulator

Hatari supports the emulation of most of the ST and STE hardware, including
some special tricks like raster interrupts, border effects and PSG sample
sound. A joystick can be emulated with the cursor keys or with a real PC
joystick. Hatari also features the possibility to "mount" a directory of the
host system as a ST drive, or to use images from an original Atari's hard
disk.

Hatari is also able to emulate the additional hardware of the TT or Falcon
machines, like the Videl video chip or the DSP 56001. However, note that TT
and Falcon support are currently still in development and experimental.