CREDIT DOWN: Difference between revisions

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m (BIOS -> system ROM)
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Input: Credits to deduct in {{BR|BIOS_CREDIT_DEC1}} for player 1, and {{BR|BIOS_CREDIT_DEC2}} for player 2.
Input: Credits to deduct in {{BR|BIOS_CREDIT_DEC1}} for player 1, and {{BR|BIOS_CREDIT_DEC2}} for player 2.
Input: Credits necessary in {{BR|BIOS_CREDIT_DEC1}} for player 1, and {{BR|BIOS_CREDIT_DEC2}} for player 2.
Credits can be read through $D00034 and $D00035.


Also updates the MVS [[book keeping]].
Also updates the MVS [[book keeping]].


[[Category:BIOS calls]]
[[Category:BIOS calls]]

Latest revision as of 05:25, 28 February 2017

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.

Also updates the MVS book keeping.