Advantech PCA-6004, Руководство пользователя

Страница: 25 / 106

Chapter 1 Hardware Configuration
11
1.8.2 Supplementary information about DIMMs
Your PCA-6004 can accept SDRAM memory chips with or without
parity. Also note::
•
If the PCA-6004 operates at 133/100 MHz, only use PC-133/ PC-100
compliant DIMMs. Most systems will not even boot if non-compli-
ant modules are used. This is due to strict timing issues involved at
this speed.
1.8 System Memory
The PCA-6004 has two 168-pin dual inline memory module sockets
(DIMMs). All these sockets use 3.3 V unbuffered synchronous
DRAMs (SDRAM). DIMMs are available in capacities of 16, 32, 64,
128, 256 or 512 MB. The sockets can be filled in any combination with
DIMMs of any size, giving a total memory size between 16 MB and 1
GB. Use the following table to calculate the total DRAM memory
within your computer:
Table 1-5: DIMM module allocation table
Socket number 168-pin DIMM memory
1 (16, 32, 64, 128, 256 or 512 MB) x 1
2 (16, 32, 64, 128, 256 or 512 MB) x 1
1.8.1 Sample calculation: DIMM memory capacity
Suppose you install a 128 MB DIMM into your PCA-6004's socket 1
and a 32 MB DIMM into sockets. Your total system memory is 160
MB, calculated as follows:
Table 1-6: DIMM memory capacity sample calculation
Socket number 168-pin DIMM memory Total memory
1 128 MB x 1 128 MB
2 32 MB x 1 32 MB
Total memory 160 MB