Gaming machine power fail enhancement

1. A meter sub-assembly for a gaming system, the meter sub-assembly including:

at least one electromechanical meter which records data relating to transactions occurring in the gaming system;

a local power supply unit associated with said at least one electromechanical meter, the local power supply unit being powered by a power supply unit of the gaming machine and the local power supply unit providing sufficient hold-up time to enable said at least one electromechanical meter to complete a meter update data recording operation in the event of a power failure; and

a power fail detect/warning means for detecting failure of the power supply unit of the gaming machine and for providing a warning of predefined duration, the duration of the warning being reduced to that of a single memory write by allowing the meter update to fail, wherein when power is restored, any failed meter updates are detected and undone.

2. The sub-assembly of claim 1 in which a plurality of electromechanical meters are mounted on a board with the local power supply unit, the power fail detect/warning means, a meter update means, a memory means and a communication means for communicating with a controller of the gaming system.

3. The sub-assembly of claim 2 in which the meter update means is operable to vary the sequence of power to the meters during the hold-up time.

4. The sub-assembly of claim 3 in which the meter update means is a microcontroller.

5. The sub-assembly of claim 2 in which the communication means makes use of a universal serial bus (USB) interface.

6. The sub-assembly of claim 1 in which an alteration in state of the at least one electromechanical meter when it records data relating to transactions occurring in the gaming system constitutes non-reproducible data to be stored in a data consumer of the gaming system.

7. A method of updating data on meter RAM of a gaming system, the method including:

creating a backup copy of original meter data and storing the backup copy in a predetermined, second data storage location of a memory device of the meter;

receiving new meter data and overwriting the original meter data at an original, first data storage location of the memory device; and

prior to implementing the action of overwriting the data, changing the status of a status indicator,

wherein a failure of a power supply associated with the meter is detected and a warning of predefined duration is then provided, the duration of the warning being reduced to that of a single memory write by allowing the overwriting of the meter to fail, wherein when power is restored, any failed overwriting of the meter is detected and undone.

8. The method of claim 7 in which the status indicator is a flag and in which the method includes examining the status of the flag every time power is restored after a power failure to determine if the power failure interrupted a meter update.

9. The method of claim 7 which includes, if there has been an interruption to the meter update, using the contents at the second data storage location to restore the original meter data.

10. The method of claim 9 which includes writing the data at the second data storage location to the first data storage location to overwrite any data at the first data storage location potentially corrupted due to the power failure.

11. The method of claim 8 which includes, once an updated transaction has been received by the memory device and a backup copy has been made, changing the flag status to updating.

12. The method of claim 11 , which includes processing the transaction and, when complete, changing the flag status to not updating.

13. A data updating arrangement for meter RAM of a gaming system, the data updating arrangement including:

a memory device including a first data storage location for storing original meter data; and a second data storage location for storing a backup copy of the original meter data and for enabling new meter data to be written to the first data storage location; and

an update status indicator for indicating the status of updating data at the first data storage location,

wherein the update status indicator works with the memory device to detect failure of a power supply associated with the memory device and to provide a warning of predefined duration, the duration of the warning being reduced to that of a single memory write by allowing the data update to fail, wherein when power is restored, any failed data updates are detected and undone.

14. The data updating arrangement of claim 13 in which the update status indicator is in the form of an update status flag which indicates the status of a meter update at the first data storage location.

15. The data updating arrangement of claim 14 in which the status flag takes one of two states, either updating or not updating.

16. An electronic gaming machine which includes:

a game controller board including a game controller; at least one peripheral device by means of which a game transaction is effected,

said at least one peripheral device communicating with the game controller using a transaction-based protocol; and

a data storage sub-assembly for storing data relating to said transaction, the data storage sub-assembly communicating with the peripheral device and the game controller by means of the transaction-based protocol, the data storage sub-assembly including a data store for storing data relating to said at least one peripheral device, and a dedicated controller for controlling operation of the data store,

the data storage sub-assembly to include a local power supply which receives power from a main power supply of the gaming machine, wherein the local power supply communicates with the dedicated controller of the data storage sub-assembly to alert the controller of the data storage sub-assembly to a power fail event to enable the controller to effect recording of data during a hold-up time of the local power supply, the alert providing a warning of predefined duration, the duration of the warning to be reduced to a single memory write by allowing the meter update to fail, wherein when power is restored, any failed meter update is detected and undone.

17. The gaming machine of claim 16 in which the transaction based protocol is a USB protocol.