Backup RAM

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Revision as of 23:29, 3 September 2011 by Furrtek (talk | contribs)
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The backup RAM is a battery-powered 64KiB RAM space used by MVS systems to store game scores, cab infos and income logs. Access is handled by the BIOSes.

Memory region: $D00000~$D0FFFF (Mirrored up to $DFFFFF ?).

Locations

  • $D00046.b: SOUND_STOP, No sound at all if non-zero
  • $D00047.b: Number of detected slots
  • $D00058.b: First valid slot
  • $D00108.b: Last tested slot
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