Mystic Marathon
---------------

RAM board - pins labeled such that LOWEST number is nearest the RAMs, starting
with the connector closest to the RAMs.

2J3 Power
---------

 1 - Gnd
 2 - Gnd
 3 - Gnd
 4 - Gnd
 5 - Key
 6 - +5VDC
 7 - +5VDC
 8 - +5VDC
 9 - +12VDC
10 - -5VDC

2J2 Monitor
-----------

1 - Red
2 - Green
3 - Blue
4 - Gnd
5 - Vert sync
6 - Horz sync
7 - Comp sync

ROM board - pins labeled such that HIGHEST number is nearest the batteries,
starting with the connector nearest the batteries.


1J7 Power
---------

 1 - Unused
 2 - Gnd
 3 - Gnd
 4 - Gnd
 5 - +12V Unreg
 6 - Unused
 7 - +5VDC
 8 - +5VDC
 9 - +5VDC
10 - +5VDC
11 - Key
12 - ??

1J6 Switch
----------

 1 - Jump
 2 - Key
 3 - Player 2 start
 4 - Player 1 start
 5 - Left
 6 - Down
 7 - Right
 8 - Up
 9 - ??
10 - Gnd

1J5
---

Not used

1J4 Coin Door I/O
-----------------

 1 - Mem Prot
 2 - Key
 3 - Slam tilt
 4 - Right coin
 5 - Center coin
 6 - Left coin
 7 - H.S. Reset
 8 - Advance
 9 - Auto/Manual
10 - NC

1J3 Speaker
-----------

1 - Red-Blk (speaker +)?
2 - ??
3 - ??
4 - Blk-Red (speaker -)?

IJ2 Volume control
------------------

1 - Red    (input to pot?)
2 - Black  (output of pot?)
3 - ??
4 - Silver (shield?)