 System Board (PCB# 9940)
RAM Expansion Chart
Installation Procedure
You must install two SIMMs of the same size and type with a speed of 60-ns in each occupied row.
Depending on the model, the Revolution Quad6 comes standard with 32-MB or 64-MB RAM. System memory is upgradable to 2-GB of Error Checking and Correcting (ECC) memory.
The Revolution Quad6 memory subsystem architecture supports three types of configuration:
- 4:1 interleaved consists of four or eight rows
- 2:1 interleaved consists of two or six rows
- 1:1 interleaved consists of one row
An interleave in this system requires a minimum of two 36-bit SIMMs (1 row/72-bit wide) containing a total of 64 data bits plus 8 bits of ECC RAM. To ensure optimum performance, observe the following rules when installing memory.
IMPORTANT! For optimum performance, select a 4:1 interleaved type whenever possible.
- Install SIMMs one row at a time and in successive order, starting with row 1. (A row consists of two memory slots.)
- Use only identical type and size SIMMs with a speed of 60-ns or faster.
Refer to the table and performance guide below for proper RAM configuration.
|
Interleave Type
|
1:1
|
2:1
|
|
|
SIMM Size
|
SIMM Quantity
|
Total Memory
|
SIMM Quantity
|
Total Memory
|
SIMM Quantity
|
|
512KB x 36
|
2
|
4MB
|
4
|
8MB
|
8
|
|
1MB x 36
|
2
|
8MB
|
4
|
16MB
|
8
|
|
2MB x 36
|
2
|
16MB
|
4
|
32MB
|
8
|
|
4MB x 36
|
2
|
32MB
|
4
|
64MB
|
8
|
|
8MB x 36
|
2
|
64MB
|
4
|
128MB
|
8
|
|
16MB x 36
|
2
|
128MB
|
4
|
256MB
|
8
|
|
32MB x 36
|
2
|
256MB
|
4
|
512MB
|
8
|
|
4:1
|
|
|
Total Memory Minimum
|
SIMM Quantity
|
Total Memory Maximum
|
|
16MB
|
16
|
32MB
|
|
32MB
|
16
|
64MB
|
|
64MB
|
16
|
128MB
|
|
128MB
|
16
|
256MB
|
|
256MB
|
16
|
512MB
|
|
512MB
|
16
|
1GB
|
|
1GB
|
16
|
2GB
|
- Open the system as described in the Rack-mountable Revolution Quad6 User's Guide.
- Remove the two brackets securing the memory card to the chassis as shown below. Save both brackets and screws.
- Gently pull out the memory module from the system board and lay it (top side up) on a static-free surface.
- Angle the SIMM about 45 degrees as you insert it into the socket as shown below.
- Push the SIMM into the socket until it is firmly seated.
- Tilt up the SIMM to a vertical position until the spring-loaded latches lock the SIMM into place.
- Repeat steps 3 through 6 to install additional SIMMs.
- Reinstall the memory module, making sure it seats firmly into the system board memory slot. Secure the module with the brackets and screws you removed in step 2.
- Close the system and power it up.
- Run the EISA Configuration Utility Program supplied with your system. Refer to the EISA Configuration Utility Guide for more information.
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