Battery-backed RAM: Difference between revisions

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[[File:Cd2_batram.jpg|thumb|right|8KiB for game saves on a CD1 board.]]
[[File:Cd2_batram.jpg|thumb|right|8KiB for game saves on a CD1 board.]]


Battery powered RAM (made non-volatile) used to store cab related information (bookkeeping) and score tables in the [[MVS]]. It may be called [[backup RAM]] or sometimes "SRAM".
Battery powered RAM (made non-volatile) is used as [[backup RAM]] in the [[MVS]] to store cab related information (bookkeeping) and score tables (sometimes called "SRAM").
 
The [[:Category:CD systems|CD systems]] use it to store game saves instead of using [[memory card]]s.


Except [[V-Liner]], no game cartridges store player data.
Except [[V-Liner]], no game cartridges store player data.
The [[:Category:CD systems|CD systems]] use it to store game saves instead of using [[memory card]]s.


[[BIOS calls|BIOS calls]] are used to handle the specific formats, although nothing prevents read/writes being done the game's [[68k]] program itself.
[[BIOS calls|BIOS calls]] are used to handle the specific formats, although nothing prevents read/writes being done the game's [[68k]] program itself.

Revision as of 02:34, 21 October 2017

File:Cd2 batram.jpg
8KiB for game saves on a CD1 board.

Battery powered RAM (made non-volatile) is used as backup RAM in the MVS to store cab related information (bookkeeping) and score tables (sometimes called "SRAM").

The CD systems use it to store game saves instead of using memory cards.

Except V-Liner, no game cartridges store player data.

BIOS calls are used to handle the specific formats, although nothing prevents read/writes being done the game's 68k program itself.

Battery replacement

See Battery replacement.