memory Expansion card to 4MB?
The Applied Engineering GS-RAM III uses 20-pin “Zip” package 1M x 4 DRAMs (NEC D424400V-80 or OKI H5144024-70). A few other Apple II memory cards also use relatively rare Zip package RAM. As of November 2002, you could find the NEC chip at Spi Semiconductor (818-884-8000; http://www.spisemi.com/index.html ). Search for 424400. For other suppliers, a fairly good try is a current issue of Computer Shopper magazine. Whenever you order these memory IC’s, be sure to confirm that the chips are, in fact, in the Zip package.