Roland Jupiter 8 "Memory Liberator" F-RAM Upgrade / battery eliminator

The Roland Jupiter 8 normally uses a lithium battery and four (now out of production) RAM chips to hold program memory. Typical F-RAM / Flash RAM modules intended to replace a single RAM IC won't work in the Jupiter 8 because it uses two banks of width-cascaded 4-bit RAMs. Our Jupiter 8  "Memory Liberator" includes the necessary logic that allows it to replace ALL FOUR of the original RAMs with the single modern ferroelectric RAM chip housed on our board, eliminating the need for a battery entirely. This retrofit plugs into one of the Jupiter 8's EPROM sockets but does require soldering of 3 wires to install. 

You can view the installtion instructions here: Jupiter 8 Memory Liberator Installation