Thx, it seems to me that internal left+up stucked in the emulator. When i check the controls in the program, EXT2 joy gives no move result, and then internal joy check routine comes, reading keyrow 7 (row of internal joystick) gives always 0d7h which means up and left is pressed, and since no interrupt occurs between writing 07h to port 0b5h (keyboard row select) and reading the result, it is not WOW error, if next time this happens, please go to debugger ALT+B, this should solve the stucked keyboard issue. I had similar issue with the emulator, sometimes keys are stucked if i remember well when i turn it to "god mode" ALT+W.