SOLTEK SL-85DRS User Manual page 80

Appendices
mainboard to add some signals on socket 370.
Flash ROM
Flash ROM can be re-programmed by electronic signals. It is easier for
BIOS to upgrade by a flash utility, but it is also easier to be infected by
virus. Because of increase of new functions, BIOS size is increased from
64KB to 256KB (2M bit) or more.
FSB (Front Side Bus)
FSB is the data channel connecting the Processor to chipset, RAM,
mainboard buses, AGP socket etc. Its speed is in terms of MHz and is
talked to as FSB clock:
FSB Clock means CPU external bus clock.
CPU internal clock = CPU FSB Clock x CPU Clock Ratio
IEEE 1394
IEEE 1394 is a low-cost digital transfer interface with transfer rate at 100,
200 or 400 Mbps. It provides solutions of connecting digital television
devices and Serial Bus Management. There are two type of IEEE 1394
data transfer: asynchronous and isochronous. Isochronous data channels
provide guaranteed data transport at a pre-determined rate. This is
especially important for time-critical multimedia data where just-in-time
delivery eliminates the need for costly buffering.
Parity Bit
The parity bit mode of error detection uses 1 parity bit for each byte.
Normally it is even parity mode, that is, each time the memory data is
updated, parity bit will be adjusted to have even count "1" for each byte.
Next time when memory is read with odd number of "1", the parity error
is occurred and this is called single bit error detection.
PC-100 DIMM
SDRAM DIMM that supports 100MHz CPU FSB bus clock.
PC-133 DIMM
SDRAM DIMM that supports 133MHz CPU FSB bus clock.
PC-1600 or PC-2100 DDR SDRAM
PC-1600 DDR SDRAM with a 64-bit data bus doubles the data transfer
rate of PC100 SDRAM and hence provides data transfer bandwidth up to
100x64/8x2=1600MB/s. PC2100 DDR SDRAM doubles the data transfer
rate of PC-133 and hence provides data transfer bandwidth up to 133x64/
8x2=2100MB/s.
PCI (Peripheral Component Interface) Bus
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