MAJOR HAVOC SELF TEST ERROR CODES
    
The Major Havoc PCB contains two separate microprocessors and a vector 
state machine.  The alpha processor takes care of computing all game play
while the gamma processor handles switch input and sound output. The vector
state machine draws objects that are contained in the Vector ROM. It receives
instruction via the Vector RAM.

When you first turn on the game in self test you will have three possibilities:
    1.  Screen shows operator information display:  Normal
    2.  Roller controller flashes, game does not power up: Gamma Processor Fatal Error
    3.  Screen flashes "G" : Fatal Gamma Error or Bad RAM @ 1H/J

OPERATOR INFORMATION DISPLAY

Gamma Processor Error Codes

      R         Gamma RAM Error @ 9P/Q
      O         Gamma ROM Error @ 9S
      P         Pokey Error @ 13Q 
      E         EEROM Error @ 9Q/R

Alpha Processor Error Codes

      A     0000-7FFF             RAM Error @ 1J/K
      B     0800-08FF &           RAM @ 1H/J
              0200-0700 page 2
      C     Vector Gen.-Low       RAM Error @ 6M/N
      D     Vector Gan.-High      RAM Error @ 6L/M
      E     Communication RAM     Error @ 1F

ROM Error Codes

      A     1N/P
      9     1N/P
      8     1Q
      7     1Q
      6     1L*
      5     1M/N*
      4     6J/K
      3     6J/K
      2     6H
      1     6H
      0     6K/L*

* Must be good for self test to funtion