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Gl
ossary
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A memory space in Flash-ROM to simulate E
2
PROM operation, AOpen motherboard uses
Shadow E
2
PROM for jumper-less and battery-less design
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SIMM socket is only 72-pin, and is only single side. The golden finger signals on each side of
PCB are identical. That is why it was called Single In Line. SIMM is made by FPM or
DRAM and supports 32-bit data. SIMM had been phased out on current motherboard design.
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SMBus is also called I2C bus. It is a two-wire bus developed for component communication
(especially for semiconductor IC). For example, set clock of clock generator for jumper-less
motherboard. The data transfer rate of SMBus is only 100Kbit/s, it allows one host to
communicate with CPU and many masters and slaves to send/receive message.