User`s manual

AIMB-740/741 User’s Manual 14
1.10 System Memory
The top-left edge of the AIMB-740/741 contains two sockets for 184-pin
dual in-line memory modules (DIMMs). Both two sockets use 2.5 V dou-
ble-data-rate synchronous DRAMs (DDR SDRAM). DIMMs are avail-
able in capacities of 64, 128, 256, 512 MB, or 1 GB. The sockets can be
filled in any combination with DIMMs of any size, giving your AIMB-
740/741 single board computer between 64 MB and 2 GB of memory.
Use the following table to calculate the total DRAM memory within your
computer:
1.10.1 Sample calculation: DIMM memory capacity
Suppose you install a 512 MB DIMM into your AIMB-740/741's socket 1
and a 512 MB DIMM into sockets 2. Your total system memory is 1 GB,
calculated as follows:
Total memory 1 GB
1.11 Memory Installation Procedures
To install DIMMs, first make sure the two handles of the DIMM socket
are in the "open" position. i.e. The handles lean outward. Slowly slide the
DIMM module along the plastic guides on both ends of the socket. Then
press the DIMM module right down into the socket, until you hear a
click. This is when the two handles have automatically locked the mem-
ory module into the correct position of the DIMM socket. To remove the
memory module, just push both handles outward, and the memory mod-
ule will be ejected by the mechanism in the socket.
Table 1.6: DIMM module allocation table
Socket number 184-pin DIMM memory
1 64, 128, 256, 512 MB, or 1GB)
2 64, 128, 256, 512 MB, or 1GB)
Table 1.7: DIMM mem capacity sample calculation
Socket number 184-pin DIMM memory Total Memory
1 512 MB x 1 512 MB
2 512 MB x 1 512 MB