As the subject states can anyone share how applications and the OS along with the Southbridge chipset (now called Platform Controller Hub) internally work together ? I would like to learn how the Southbridge (Platform Controller Hub) handles all the low level details between the OS and user/driver mode applications.
For example what is the role of the chipset when a user is typing text in a program like Microsoft Word 2007/2010 under a Windows OS environment ? Does all data entered by the user go through the chipset ? Does all data entered by the user go through the chipset ? I understand that all keystrokes originate from the keyboard is forwarded by the keyboard controller then channeled through the chipset (Southbridge now called Platform Controller Hub) then to the OS which in turn forwards to the application correct ? But does the forwarding by the OS again pass through the Platform Controller Hub chipset before it reaches the application ? I believe it does but anyone please correct me if I am mistaken. Are there any good resources books or datasheet or sites which provide an explanation on how this interaction between applications and the OS and the chipset actually works ?
Thanks