Still gathering information about that hack.

  • Works for T- and Y-Units. But T-Unit utilizes 4 eproms – where as Y-Unit just uses the  „3.1  Turbo“ eproms  for  U105, U89
  • Those are the two roms labeled „Kombo“ in


Looking for two 512kb eproms. Found two 1Mb ones. Not sure where I got them from. M27c1001 , needed: M27C4001. Sounds like a perfect match to me! Thou, my programmer might have problems.


they seem to match fine.

Thou, they do not work.





whatever I was drinking that day: thpse chips are not compatible. Currently ordering better matching onges.