After doing some searching (on arcade machine forums, no less), I found a memory chip that works, replaced 32 of my RAM chips, and the EII is back in action. The chip is a 4164-150 and is sold at jameco.com for $1.05 each. Trivia: Discovered that my EII is serial #023 (revision 0 boards) on the inside, but #057 on the outside. It was previously owned by Fleetwood Mac, and I have all of their sample discs.
Message
RAM issues solved.
2008-12-04 by Brent Elliott