AMD 4.4.5 user manual Device Group Examples, Example 1GB DDR2 memory

	AMD Confidential
User Manual	November 21st, 2008

IOfpdis: Mixed

MEM: Disabled

MEMfpdis: Mixed

GETMEMPTR: Disabled

1simnow> shell.GetLogIO "-> Machine #1"

PCI: Disabled

IO: Disabled

IOfpdis: Mixed

MEM: Disabled

MEMfpdis: Mixed

GETMEMPTR: Disabled

3.3.5 Device Group Examples

Device groups can be a powerful building block for SimNow users. These next examples should help give further understanding about device groups, and demonstrate some practical uses.

3.3.5.1 Example: 1GB DDR2 memory

When you instantiate a “Dimm Bank” known device into a created device, you get its default state of 8 empty dimm‟s with no configuration. You can then configure the “Dimm Bank”, such as by opening the device‟s GUI configuration properties to specify general options (such as max number of dimm‟s), and to configure each dimm (such as by importing an SPD). You could configure it, for example, to emulate a dimm bank with 2 DDR2 dimm‟s (1GB each).

Device groups offer us a potentially simpler alternative - for the user to instantiate a preconfigured device group. For example, we could have a device group “Dimm DDR2 1GBx2”, which has (inside it) only one child and default archive data (state) for that child. The figure below shows that the (theoretical) known device “Dimm DDR2 1GBx2” has inside it a single child device “Dimm Bank #0” that is configured with two dimm‟s (type DDR2, 1GB each).

Configured as DDR2, 2 dimm (1GB each)

Figure 3-11: Example DIMM Device Group

When the user instantiates this (theoretical) known device “Dimm DDR2 1GBx2” as a created device, we get a created device “Dimm DDR2 1GBx2 #0” with a child device “Dimm Bank #0” that is already configured (as DDR2, 2 dimm, 1GB each). Our resulting main device GUI would look like this:

Chapter 3: Graphical User Interface 21