BIOS(BasicInputOutputSystem) is actually the computer's basic input output system.
Its content is integrated on a ROM chip on the industrial control motherboard. It mainly stores the most important basic input / output programs and system information settings for the computer system. Power-on self-test procedure and system startup self-test procedure.
In the industrial computer, the BIOS mainly deals with the following aspects:
Self-diagnostic program: Identify the hardware configuration by reading the contents of CMOSRAM, and perform self-test and initialization.
CMOS setup program: Start with a special hot key during the boot process, and store it in ACMOSRAM after setting.
System self-test loading program: After the self-test is successful, the boot program on the disk relative to sector 0 and sector 0 is loaded into the memory and allowed to run to load the DOS system.
The role of the industrial computer BIOS settings is mainly divided into the following parts
After the power control self-test and initialization of the industrial control host are completed, the BIOS needs to be used to boot DOS or other operating systems.
Program service processing
Program service processing instructions are mainly for application programs and industrial computer operating system services.
Hardware interrupt handling
When booting, the BIOS will detect the industrial computer hardware system through a self-test procedure, and will tell the CPU the interrupt number of each hardware device.
In general, the BIOS is an indispensable part of our industrial computer motherboard. If the BIOS fails, then our industrial computer will not work properly.