Basic HTML Version
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CONTROL BOARD ERROR DETECTION
Your game has a new subroutine to detect CMOS RAM
error or battery failure on the 6803 Control Board.
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Watch the High Score total. Each time an error occurs, a
"1" appears in the "units" digit. This indication also appears
if game ROMs are replaced with ROMs from another game.
The program compares its EPROM version number with the
EPROM version number in CMOS RAM.
At the next power-up after an error or EPROM replacement,
the following events occur ...
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.ACCOUNT CLEARED is displayed. This indicates that
accounting data registers have been reset to zero .
• INSTALL FACTORY is displayed. This indicates that
game features have been reset to factory settings.
• The High Score units digit is incremented by 1. If the
High Score was 6,000,000 before power-up, the score
reappears as 6,000,001 .
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• The game writes the EPROM version
10
number into
CMOS RAM.
NOTICE
Clear RAM errors by holding the left and right coin switches
closed during power-up. This easy procedure clears ac-
counting data and resets the game to factory settings.
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OPERATION WITH ONE DISPlAY
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SPECIAL TWO-PLAYER MODE
This game is designed for "reasonably normal operation"
when one display module is damaged. To use only one dis-
play, adjust the game for the special, two-player mode.
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3-6
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