neogeodev/NeoMemCard2: Open Hardware NeoGeo memory card · G

it may be challenging to solder. The 32kB FRAM chip can be replaced by older and maybe cheaper Ramtron 8kB FM16W08's， NeoMemCard2 Open Hardware NeoGeo memory card Files neomemcard2_ss : With "NeoGeo" logo silkscreen neomemcard2_no_ss : Without "NeoGeo" logo silkscreen Operation The switch allows to select one of the two 16kB banks. The NeoGeo system ROM can only handle max. 16kB memory cards， the LED turns off briefly to show the write operation. BOM PCB RefManufacturer/DescMouser Ref C1 1206 100nF MLCC Any C2 1206 22nF MLCC Any CONN Hirose memcard connector 798-IC1HA68RD127SH51 D1 1206 monochrome LED Any D2 BAS16GWX diode 841-BAS16GWX R1 1206 4.7k resistor Any R2 1206 8.2M resistor Any R3 1206 ~390ohm resistor Any SW1 CK SPDT slide switch 611-SK12C0405SG1.5RT U1 32kBytes parallel FRAM 877-FM18W08-SG U2 74LVC2G04 dual inverter 771-74LVC2G14GWQ100H Notes PCB is two layer 0.8mm FR4. No need for gold plating. The 74LVC2G04 is in a small package， if you plan on using free and open source files which (as clearly stated by section 16 of the LICENSE file) don't come with any kind of guarantee and even less any kind of contractual service since they're basically a gift . ， no need for the switch and the pull-up resistor R1 in that case. R3's value can be changed to adjust the LED's brightness. Use electrical tape or a piece of adhesive vinyl sheet to cover the components. Not doing so may result in their tearing by the plastic ridges inside the console during insertion or removal of the card. License and guarantee In general， so you have to manually switch between the two to use the full capacity. The LED turns on as soon as the card is powered. When a game is saved，。