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CMOS RTC
The 440BX and 440GX AGPsets include a Real Time Clock (RTC) circuit, which
provides the date and time for the system. If the external battery for the RTC is
low, it will prevent your system from POSTing, and you will not get a display.
Normally the life span of an external battery is 2 years. If yours is running low,
you will need to replace it with a new 3V lithium battery (Sony CR2032).
Flash EEPROM
The Thunder 100 uses flash memory to store BIOS programs. It can be updated
as new versions of the BIOS become available. You can upgrade your BIOS
easily using the flash utility (see page 88).
RAM Installation
The Thunder 100 uses a 64-bit data path from memory to CPU and can
accommodate up to 1024MB of SDRAM. The 168-pin DIMMs must be of the
3.3V, unbuffered variety. The position of the notch in the DRAM key position
will tell you whether or not a DIMM is unbuffered (see the figure below).
100MHz SDRAM is recommended. 66MHz SDRAM can also be used only with
1.
2.
CPUs that use a 66MHz bus speed. All installed memory will be automatically
3.
detected, so there is no need to set any jumpers.
procedure
Some details of memory installation:
One unbuffered DIMM must be installed for the system to POST.
·
The mainboard supports 8MB, 16MB, 32MB, 64MB, 128MB, and 256MB
·
SDRAM with SPD, 100MHz or 66MHz SDRAM, and SDRAM+ECC
DIMM modules.
The S1836DLUAN-GX also supports 512MB SDRAM with SPD modules,
·
although these modules are not yet validated at time of
S1836 Thunder 100
Unbuffered
RFU
Buffered
168-pin DIMM
33
print.
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Table of Contents
Troubleshooting
