Flash Eeprom; Ram Installation; Cache Memory - TYAN S1846 User Manual

Flash EEPROM

The Tsunami 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 71).

RAM Installation

The Tsunami uses a 64-bit data path from memory to CPU and can accommo-
date up to 768MB 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). All
installed memory will be automatically detected, so there is no need to set any
jumpers.
RFU
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 DIMM modules.
The table on the following page shows some of the possible memory configu-
rations.

Cache Memory

Penitum II processors have the L2 (Level 2) cache built into their architecture,
so there is no need for an L2 cache on the motherboard. The Pentium II
processor has a phsyical L2 cache size of 512KB and a cacheable memory area
of 512MB.
S1846 Tsunami ATX
Unbuffered
Buffered
31
168-pin DIMM