SWITCHES AND JUMPERS
The CPU Board has a number of hardware variables that can be changed to adapt this assembly to other
uses. Jumpers determine which circuit paths are active, and DIP-switches select instructions.
There is one CPU Board push button switch (S2, near the battery). This
switch
resets the processor. This
switch may be used during service to restart the game without cycling the power off and on again,
There are two blocks of DIP Switches
(U8
and
U9)
on this CPU Board set. Each block consists of eight
individual switches. These switches are factory set for normal game operation.
NOTE Most instruction variables for this game are software selectable from the menu system.
Jumpers
There is one block of jumpers (P20) on
thrs
CPU Board set. The other Jumpers are individual pins. The
function of each jumper is explained in CPU Board Jumper Status Chart (Refer to Section Three, Wiring)
NOTE: The circuit paths have been optimized at the factory during the board test procedure. Each
jumper should be out (disconnected) to avoid error messages or video sync problems.
ERRORS
Errors are detected by the system and reported on the screen. Some errors, such as minor disk data
faults, can be repaired by the system. Other errors, such as player control calibration, may be fixed by
manually resetting the values into game memory In most cases, the game will continue to operate after
errors have been found, although performance may be reduced. Do not ignore error messages.
Always record error messages before attempting to correct any problem. Some temporary messages will
be created by intermittent conditions; it might be a while before the same error occurs a second time.
NOTES
2-22
To Next Page
Loading...
