FT5000 (Sitka motherboard) - MemoryThe memory module contains slots for 16 DIMMs and is attached to the mainboard through a 242-pin connector. Memory amounts from 128 MB to 4 GB of DIMM are supported, with a 64/72-bit four-way-interleaved pathway to main memory, which is also located on the module.
The 16 slots are divided into four banks of four slots each, labelled A to D. These banks support 4:1 interleaving. The memory controller supports EDO DRAMs. The four DIMMs in any bank must be identical and preferably should be 60ns, each individual DIMM must be at least 32 MB.
The ECC used for the memory module is capable of correcting single-bit errors (SBEs) and detecting 100 percent of double-bit errors over one code word. Nibble error detection is also provided.
System memory begins at address 0 and is continuous (flat addressing) up to the maximum amount of DRAM installed (exception: system memory is noncontiguous in the ranges defined as memory holes using configuration registers). The system supports both base (conventional) and extended memory.
In a 4 GB configuration, a small part of memory (typically 32 MB) is not remapped above 4 GB. If your OS does not support more than 4 GB of physical memory, this small part of the memory is effectively lost.
Sample DIMM component combinations