>In fact, it is a synchronous serial protocol just like SPI, so what appears to have happened with these MacBooks is that Apple basically reinvented PS/2 in their own "Think Different" way.
Ugh. Almost everybody uses SPI for touchpads these days, although they frequently also provide a PS/2 compatibility mode. Apple don't care about working with stock operating systems other than their own (the Bootcamp installer injects additional drivers for Windows), so they decided not to bother.
Ugh. Almost everybody uses SPI for touchpads these days, although they frequently also provide a PS/2 compatibility mode. Apple don't care about working with stock operating systems other than their own (the Bootcamp installer injects additional drivers for Windows), so they decided not to bother.