Marshall just rejected my request for a free sample of the RAM chip for the TI-92 :( When I get some money I'll order one, it is only $24. I'm a little tight on cash now, but it will be done eventually. It anyone else upgrades their RAM with the Toshiba chip ( TC551001BTRL-85L ) before I get a chance, please post with your results. Bill Stysiack wjs12@cornell.edu