Gateway ALR 9200 DIMM Installation Sequence, System Memory Addressing, 1.Memory bank A, 2.Memory bank B, 3.Memory bank C, 4.Memory bank D

Note:

Each memory bank includes two DIMM sockets in each row of connectors. When installing DIMMs, be careful to install the DIMMs in the correct sockets for the bank.

DIMM Installation Sequence

You must install DIMMs in the correct order and in entire banks. All DIMMs in the bank must be the same size and speed. DIMMs in other banks may differ in size. If you use slower DIMMs in another bank, all DIMMs operate at the slower speed (see Figure 4 on page 23).

The sequence in which you must fill the banks is:1.Memory bank A2.Memory bank B3.Memory bank C4.Memory bank D

System Memory Addressing

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.

•Base memory is located at addresses 00000h to 9FFFFh (the first 1 MB).

•Extended memory begins at address 0100000h (1 MB) and extends to FFFFFFFFh (4 GB), which is the limit of supported addressable memory. The top of physical memory is a maximum of 4 GB (to FFFFFFFFh)

Memory holes can be configured in Setup or the SSU and are used by some legacy ISA boards. If you do not need to set up a memory hole for an ISA expansion board, leave the memory in a contiguous state for optimal performance.

24 Maintaining and Troubleshooting the Gateway ALR 9200 Server