
DSP INTERRUPT ON CENTURBO II
****************************

Thanks to Rodolphe Czuba !!

DSP interrupt not exist on CT2, but the following modifications
have to be done (look at pictures .IMG):

   * Bent the pins of the new 74LS05 to the outside exept. no.14.
   * Solder a resistor of 1 Kohm between pins 10 and 14 of the 74LS05.
   * Connect together the pins 4, 5, 9 and 10 on the 74LS05.
   * Place the 74LS05 on GAL U44 as shown on picture MONTAGE.IMG.
   * Solder pin 14 of the 74LS05 on pin 24 of U44.
   * Solder some wires as shown on picture between 75LS05 and U44.
   * Connect a wire at pin 6 and 8 of 74LS05 to the pin 42 on CT2 2x40 
     connector or pin 31 of 68882 on CT2B (MONTAGE2.IMG).

The author is not liable for damage through this modification can 
create.

Now you can remove DSP_IRQ.PRG in your auto-folder.

e-mail: didier.mequignon@wanadoo.fr





 