the ROM BIOS chip
Yea the CPU,and the ROM bios chip is the most important chip on the motherboard,even the dma also.
ROM
The operating system has nothing to do with the ROM chip
The ROM Chip
A ROM chip
Yes. Every motherboard has a Rom chip on it. Typically, the one most noteworthy is the Rom chip that holds the information for the motherboard. It carries boot instructions, the setup program, BIOS programs, and POST routine. This chip is usually not altered. Older motherboards carried removeable ROM chips that could be replaced, but are now mostly onboard or soldered on permanently.
rom chip
ROM(Read Only Memory) stores the contents of the BIOS chip.
If you removed the ROM chip - then powered up the computer, you would simply get a blank screen. The operating system 'kicks in' because the ROM chip tells it to start.
PROM
It's that mask ROM to make it flexible and inexpensive.