SOLTEK SL-85DRV2, User Manual

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Appendices
94
DIMM (Dual In Line Memory Module)
DIMM socket is built with a 168-pin assignment and supports 64-bit
data. DIMM can be single or double sided. The golden finger signals
on each side of the module are different, and that is why it is called
Dual In Line. Almost all DIMMs are made with SDRAM now, which
operate at 3.3V. Some old DIMMs are made by FPM/EDO and only
operate at 5V.
DMA (Direct Memory Access)
Channel for communications between memory and surrounding
devices.
ECC (Error Checking and Correction)
The ECC algorithm has the ability to detect double-bit error and auto-
matically correct single-bit error while parity mode can only detect
single-bit error.
ECP (Enhanced Communication Port)
ECP is a technology designed to improved I/O for parallel ports.
EPP (Enhanced Parallel Port)
EPP is a standard that supports data transfer rates of up to 500 kps for
parallel printers
EDO (Extended Data Output) Memory
Unlike traditional FPM (Fast Page Mode) memory that tri-states the
memory output data to start the pre-charge activity, EDO DRAM holds
the memory data valid until the next memory access cycle, which is
similar to pipeline effect in reducing one clock state.
EEPROM (Electronic Erasable Programmable ROM)
Both EEPROM and Flash ROM can be re-programmed by electronic
signals, but the interface technology is different. Size of EEPROM is
much smaller than flash ROM. BIOS is now generally stored in
EEPROM or Flash ROM.
EPROM (Erasable Programmable ROM)
Traditional mainboard stores BIOS codes in EPROM which can only
be erased by ultra-violet (UV) light. If BIOS has to be updated, you
need to remove EPROM from mainboard, clear data by UV light, re-
program, and then insert it back to socket.