The 6116/6264 NVRAM is a suitable replacement for the 6116 SRAM fitted to Bally 6803, Williams System 9 thru 11C, and Data East Laser War as well as any 6264 SRAM fitted to Data East, Sega/Stern Whitestar boards, and Williams System 11B, 11C, and WPC games with Jumper modifications

By upgrading to NVRAM you will never have to replace the batteries again, and neither will you have to worry about battery leakage which can cause £100's of pounds damage to repair or replace the board and/or components. Once upgraded, the NVRAM will retain all your configuration settings and High Scores for many years to come. It is also suitable for any other electronic equipment that uses either the 6116 or 6264 SRAM, depending on the IC socket to be fitted.

Selecting the required 6116 or 6264 configuration is easily achieved by soldering across the clearly labelled jumper pads. When plugging the 6116 version in to the board, you must make sure that Pin 1, as marked 6116 on the NVRAM, is plugged in to Pin 1 on the board. That will leave 2 x2 Pins not used. They MUST not touch the board or any components hence the use of an IC socket is strongly recommended. Correspondingly, with the 6264 version, Pin 1 as marked, 6264 on the NVRAM, must be plugged in to Pin 1 of the IC socket. All pins are used.

The choice of two variations will allow the user to swap between games where the SRAMs are different. Just change the links on the NVRAM to suit the game, or if you have multiple games, you can purchase all the same NVRAMs and configure as required for each game. Data will be lost when swapping between different games.

Most Bally 6803, Data East and Sega/Stern Whitestar games were supplied with the SRAM chip already fitted in a socket. These games are 'Plug & Play', so no soldering is required. Sharkey's Shootout will not use these NVRAMs. Laser War will need a 6116 NVRAM. Meteor will also need the updated ROM set.

On all Whitestar games, if a 62256 SRAM was factory installed, a 6264 NVRAM will work with a jumper change. If you use the 6264, then it is not a bad idea to change the jumper for the memory type, 32k to the 8k setting, but the 6264 should work without this change. The jumper block ‘JP1’ is mounted directly below the SRAM chip on many of these boards, but may be a physical jumper instead of a movable switch or jumper block.

On all Williams games, the boards were shipped from the factory with the SRAM chip soldered directly to the board. This will need to be removed and an IC socket fitted before installing the NVRAM, so some soldering will be required.

The System 11B & 11C boards were fitted with the 24 pin 6116 SRAM, but will have 28 pin holes suitable for a 6264 NVRAM. The 28 pinout can be seen as two empty plated through holes, either side, and at the front of the 6116 SRAM. Jumpers W5 & W6 will need to be changed to upgrade to the 6264 NVRAM. If you don't want to change the jumpers, then the 6116 configuration will work OK

The 6264 configuration is suitable for all Williams WPC games. Some WPC games had a 62256 SRAM chip fitted, but a 6264 NVRAM will work with jumper/resistor changes, (R93, W3). If your game is currently using a 6264 SRAM, no jumper changes are needed.

On some machines, the Real-time clock for specialist functions or other time-sensitive modes will not work correctly. These include, but are not limited to... WHO Dunnit, Dirty Harry, Johnny Mnemonic, Congo, Junk Yard, Theatre of Magic, NBA Fastbreak, Creature From the Black Lagoon and Twilight Zone. There are some Easter Eggs on Bride of Pinbot that require the correct time as well.

All of the Williams boards will require the existing SRAM to be desoldered and removed from the board. If you do not have the proper equipment or experience to desolder ICs and install a socket, this mod may not be for you as some of these boards have delicate traces. Please be aware of this and seek technical advice before purchasing the NVRAM module. We are unable to provide this service.

There are options to decide which, if any, IC socket you would like to be supplied with the NVRAM.

If you have any doubts before ordering, please message us with the name and manufacturer of your machine, and the part number printed on the SRAM chip. We will check and confirm if this upgrade will work.

Search  5114 NVRAM   5101 NVRAM   6116 NVRAM   6116/6264 NVRAM   6264 NVRAM  62256 NVRAM   for all Battery Eliminator listings.

Each NVRAM is tested before despatch to ensure it is working correctly.

Any attempts to modify your board are AT YOUR OWN RISK.

Instructions will be supplied for all games, including SRAM locations and jumpers that may need to be changed.

Postage is free in the UK, but there is a cost for European and Rest of World Buyers. See Listing for details.