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Bank switching

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Title: Bank switching  
Author: World Heritage Encyclopedia
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Subject: CP/M, Memory bank, Extended memory, Intel MCS-51, Amstrad PCW
Collection: Computer Memory, Memory Management
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Bank switching

A hypothetical memory map of bank-switched memory for a processor that can only address 64 kB. This scheme shows 200 kB of memory, of which only 64 kb can be accessed at any time by the processor. The operating system must manage the bank-switching operation to ensure that program execution can continue when part of memory is not accessible to the processor.

Bank switching is a technique to increase the amount of usable memory beyond the amount directly addressable by the processor.[1] 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 #REDIRECT California Latino Leadership Fund

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