New Zealand Gazette – 2003 – No. 56

Page 1498

✨ Gaming Machine Technical Standards



1498 NEW ZEALAND GAZETTE No. 56

Minimum Range Requirement

3.14.12 The range of values produced by the RNG must be adequate to provide sufficient precision and flexibility when setting event outcome probabilities, (i.e. so as to accurately achieve a desired expected return to player).

Mapping

3.14.13 Mapping of random numbers into symbols (or reel stop positions) should observe the following principles:

a) the output resulting from the mapping of an RNG to symbols (or reel stop positions) must not be predictable;

b) any outcome derived from the random number generator are uniformly distributed;

c) any mappings to convert random numbers into game symbols are linear, and the distribution of the mapped symbols is identical to the distribution of the unmapped random number from which they were derived;

d) the mapped random number sequence must demonstrate that they are statistically random when subject to the same statistical tests for randomness specified for the base random number generator; and

e) the game outcomes which are derived from either a combination of mapped symbols or directly from the unmapped random numbers must have the same distribution and probability of occurrence as the game that the machine implements. In particular, poker games must have the same first hand distribution and probability as hands dealt from a randomly shuffled deck of cards; spinning reel games must have the same outcome probabilities and outcome distribution as the physical model upon which the game is based, and so on.

Scaling Algorithms

3.14.14 If a random number with a range shorter than that provided by the RNG is required for some purpose within the gaming machine, the method of re-scaling, (i.e. converting the number to the lower range), is to be designed such that all numbers within the lower range are equally probable.

3.14.15 If a particular random number selected is outside the range of equal distribution of re-scaling values, it is permissible to discard that random number and select the next in sequence for the purpose of re-scaling.

3.15 Progressive Jackpots

Communication with Jackpot Controller

3.15.1 There must be a secure, two-way communication protocol between the main game processor board and the jackpot controller (if used). This protocol must incorporate CRCs at a minimum for data integrity and security.

Modification of Jackpot Parameters

Method of Modification

3.15.2 The method by which system jackpot parameter values are modified or entered is to be secure. Parameters to be addressed are:

a) increment values;

b) secondary pool increments;

c) reset values;

d) maximum values; and

e) participating gaming machines.



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Online Sources for this page:

VUW Te Waharoa — PDF NZ Gazette 2003, No 56


Gazette.govt.nz — PDF NZ Gazette 2003, No 56




✨ LLM interpretation of page content

🏛️ Minimum Range Requirement for RNG (continued from previous page)

🏛️ Governance & Central Administration
Random Number Generator, RNG, Range, Precision, Probability

🏛️ Mapping Principles for RNG Outputs

🏛️ Governance & Central Administration
Random Number Generator, Mapping, Symbols, Predictability, Uniform Distribution, Statistical Tests

🏛️ Scaling Algorithms for RNG

🏛️ Governance & Central Administration
Random Number Generator, Scaling, Range, Probability

🏛️ Progressive Jackpots Communication

🏛️ Governance & Central Administration
Progressive Jackpots, Communication Protocol, Data Integrity, Security

🏛️ Modification of Jackpot Parameters

🏛️ Governance & Central Administration
Progressive Jackpots, Parameter Modification, Increment Values, Reset Values, Security