I never understood why they needed a custom RTC chip for the Mac. It didn't seem to do anything that the commercially available alternatives couldn't. It did co

I never understood why they needed a custom RTC chip for the Mac. It didn't seem to do anything that the commercially available alternatives couldn't. It did complicate cloning, but brazillian Unitron didn't find it hard to reverse engineer it (though they didn't get it quite right the first time).