Memory card

JEIDA V3 memory cards used in AES and some MVS systems to store game saves and/or high scores. The original SNK card could only hold 2KiB of data.

Replaced by a 64KiB (?) fixed battery-backed RAM chip in the CD systems.

See the CARD BIOS call description for memory card operations.

[Lots of details (from neogeoprotos.com)]

[Data format (from Raregame.ru)]

Pinout:

35,68: GND 51,52: VCC

1: GND 2: 9 G0 3: 11 G0 4: 12 G0 5: 13 G0 6: 14 G0 7: 42, 13 HC04 8: 23 E0 9: 9 HC32, 30 C1 10: 24 E0 11: 22 E0 12: 14 E0 13: 28 E0 14: 29 E0 15: 6 HC32 16: NC 17: VCC 18: VCC 19: 39 E0 20: 30 E0 21: 27 E0 22: 13 E0 23: 12 E0 24: 11 E0 25: 9 E0 26: 8 E0 27: 7 E0 28: 6 E0 29: 5 E0 30: 6 G0 31: 7 G0 32: 8 G0 33: 88 C1 34: GND