AP-636 Preventing BIOS Failures Using Intel's Boot Block Flash Memory

One of the major uses of flash memory technology is to provide basic input/output services (BIOS) for personal computers (PCs). This critical system BIOS is entrusted to flash because of its reliability, ease-of-use and in-system updateability. However, the PC has become more than a simple appliance for word processing and spreadsheets. With internet access, electronic mail and plug and play capabilities, the PC has evolved into a powerful, labor-saving tool. Designing to this new criteria is challenging and sometimes unpredictable. Flash memory can alleviate some of these design woes, but improper flash practices can create additional difficulties. This application note explains system considerations when designing with Intel flash memory for PC BIOS applications.

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