AMD 4.4.5 user manual Concept Diagrams

	AMD Confidential
User Manual	November 21st, 2008

Archive Data or Device State: A known device group has archive data for its child devices, which specifies the default and initial state for when a known device group is instantiated as a created device. A known device library also has default and initial state for when it is instantiated as a created device. When a BSD is saved, each device's current state (archive data) (which may be different than the original known device's archive data) is saved to the “*.bsd” file.

Internal Connection: A connection between two children of a device group

External Connection: A connection between a device's parent group and a sibling of the parent group. Under-the-hood, a connection to a device group is routed to one of its children, via an internal-to-external port mapping between the child device's port and the parent device's port.

3.3.2 Concept Diagrams

A device group is a device with its own identity (name, description, icon, help file, etc). But it is also like a BSD; in fact, every BSD has a single created device group called the Machine device. Tthe default user‟s view into SimNow is from the context of looking inside the Machine device. This encapsulation of devices inside device group‟s results in a hierarchy tree, with a Machine device group as the root node. In this way, a device group tree is like a folder/directory tree (folder is to device group as file is to device library), as demonstrated in Figure 3-6.

Machine

Group Group Library

LibraryGroupLibrary

Library Library Library

Figure 3-6: Device group: BSD with one machine group and three child devices

Any device can also connect to its sibling devices (Figure 3-6does not depict any port connections). Figure 3-7depicts the same example device tree, but with a different conceptual view - devices are inside groups; arrows represent possible port connections between sibling devices:

Chapter 3: Graphical User Interface 17