Backup RAM: Difference between revisions
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== Locations == | == Locations == | ||
$D00047.b: Number of detected slots | *$D00046.b: SOUND_STOP, No sound at all if non-zero | ||
$D00058.b: First valid slot | *$D00047.b: Number of detected slots | ||
$D00108.b: Last tested slot | *$D00058.b: First valid slot | ||
*$D00108.b: Last tested slot | |||
[[Category:Cartridge systems]] | [[Category:Cartridge systems]] | ||
Revision as of 23:29, 3 September 2011
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