.UDI

.UDI file extension

This is the basic program to work with .UDI extension

Spectaculator

Spectaculator TR-DOS Disk Image

Spectaculator is a Sinclair ZX Spectrum emulator for Windows. You can choose from Kempston, Cursor, Fuller or Sinclair Interface II joysticks and use your PC game pads to play. It supports SNA and Z80 snapshot formats and allows recording and playback of action replays... (more)

The program works with the following extensions: szx, tzx, z80, img, dsk, tap, mgt, trd, udi, sna, scl, mdr, blk, fdi and rzx