Tyan Computer TYAN S1572 ATX user manual Dram Installation

3.10 DRAM Installation

The S1572 uses a 64-bit data path from memory to CPU and can accommodate up to 256MB of RAM. The mainboard supports Fast Page Mode, and EDO (Extended Data Out) 72 pin SIMMs. SDRAM(Synchronous) are also supported in the DIMM slots. DIMM's must be of the unbuffered variety. All installed memory will be automati- cally detected so there is no need to set jumpers.

wSIMM modules must be installed in pairs.

wEach pair of SIMMs must be of the same size and type. wThe mainboard supports 1, 2, 4, 8 and 16MBx32 SIMMs.

wSIMM bank 0, 1 and 2 can use either double or single sided SIMMs. wTwo SIMMs or One unbuffered DIMM must be installed for the system

to POST.

wSDRAM DIMMs can be installed one at a time.

wThe mainboard supports 1, 2 and 4Mx 64 DIMM modules.

wSIMM bank 0 and DIMM bank 0 cannot be used at the same time. SIMM bank 1 and DIMM bank 1 cannot be used at the same time. You can use SIMM bank 0 with DIMM bank 1.

You can use SIMM bank 1 with DIMM bank 0.

wIf you use 4Mx64 DIMMs you cannot use DRAM bank 2.

wWe do not recommend using DRAM bank 2 along with DIMMs.

wThe following table shows some of the available memory configurations.

DRAM	DRAM	DRAM	SDRAM	SDRAM	Total
Bank 0	Bank 1	Bank 2	Bank 0	Bank 1
4MB x2	none	none	none	none	8MB
none	none	none	8MB x1	none	8MB
none	none	none	16MB x1	none	16MB
8MB x2	none	none	none	none	16MB
4MB x2	4MB x2	4MB x2	none	none	24MB
16MB x2	none	none	none	none	32MB
none	8MB x2	none	16MB x1	none	32MB
32MB x2	none	none	none	none	64MB
none	none	none	none	64MB x1	64MB
none	none	none	32MB x1	64MB x1	96MB
none	none	none	64MB x1	64MB x1	128MB
64MB x2	none	none	none	64MB x1	192MB
64MB x2	64MB x2	64MB x2	none	none	256MB

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