'Hard' reset
  ------------

                              10uF

                              H ||
   +-------o-----------o------H ||----o-------> /RES
   |       |           |      H ||    |
   |       |           |              |
   |      -+-          +----XXXXXX----+
   |      / \                 10k
   |     +---+ 1N4148
 \         |                       10uF
  \  sw    |                  H ||
   |       +-----------o------H ||----o-------> /EXROM
   |                   |      H ||    |
   |                   |              |
   |                   +----XXXXXX----+
  === Gnd                     12k


  XXXXX = resistor
  diode = 1N4148 or 1N914

  H ||
  H ||  = electrolytic capacitor
  H ||

 
 
 (Marc-Jano Knopp <mjk@c64.org> on 97/02/17)
 From: http://mjk.c64.org/c64.html