CREDIT DOWN

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Revision as of 06:20, 28 October 2015 by Freem (talk | contribs) (BIOS -> system ROM)
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CREDIT_DOWN ($C00456)

System ROM routine called to deduct credits.

Input: Credits to deduct in BIOS_CREDIT_DEC1 ( $10FDB0) for player 1, and BIOS_CREDIT_DEC2 ( $10FDB1) for player 2.

Input: Credits necessary in BIOS_CREDIT_DEC1 ( $10FDB0) for player 1, and BIOS_CREDIT_DEC2 ( $10FDB1) for player 2.

Credits can be read through $D00034 and $D00035.

Also updates the MVS book keeping.

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