CS/IS 101 Lecture Notes - Lecture 6: Button Cell, Leap Year, Clock Rate
Document Summary
Services that allows you to talk to attachments in the motherboard before the os boots up. Bios is stored in a nonvolatile media, thus called firmware. Physical chips that store the bios code. In modern machines, we have 2 bios chips. The reason is that if we were to accidentally delete the bios firmware, the other chip has the firmware ready to go as a backup. Power-on self-test (post) routines are built into the firmware (see lecture on that below) System setup (cmos) is also part of the firmware (see lecture on that below) A program that sends a signal to attached (to motherboard) devices that will make said devices run their own internal diagnostics. If all diagnostics results in all hardware being ok, then the system boots up. If something is wrong, the program reports the error to you (for example, the.
