High Quality Content by WIKIPEDIA articles! Bank switching is a technique that was common in 8-bit microcomputer systems, to increase the amount of addressable memory beyond the amount directly addressable by the CPU address bus. It can be used to configure a system differently at different times; for example, a ROM required to start a system from diskette could be switched out when no longer needed. Many modern 8-bit microcontrollers and microprocessors use bank switching to manage RAM random-access read-write memory, non-volatile memory, input-output devices and system management registers in small embedded systems. Unlike memory management by "paging", data is not exchanged with a mass storage device like disk memory. Data remains in quiescent storage in a memory area that is not currently accessible to the processor, (although it may be accessible to other systems).

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