CREDIT DOWN: Difference between revisions
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[[BIOSes|BIOS]] routine called to deduct credits. | [[BIOSes|BIOS]] routine called to deduct credits. | ||
Input: | 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 $D00035. | |||
Also updates the MVS [[book keeping]]. | Also updates the MVS [[book keeping]]. | ||
[[Category:BIOS calls]] | [[Category:BIOS calls]] | ||
Revision as of 17:44, 16 March 2013
CREDIT_DOWN ($C00456)
BIOS 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.