apple2.org/TWGS, or go to apple2.org and click on the link on the left of the page. It tells how to upgrade your 8k Cache to 32k! Check this out. At this URL: http://apple2.org/TWGS/TWGS32K.html There is a graphic, and instead of a silver can oscillator, there is an IC?? Anyway, there is alot of great information on the page. It was all put together by Tony Diaz, The Apple II hardware guy.