Battery-backed RAM

From NeoGeo Development Wiki
Revision as of 20:50, 12 November 2018 by Rom1 (talk | contribs) (Pictures of battery)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search
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.

Original batteries

  • SAFT come from MV2 and MV4
  • Toshiba come from MV1