Compatibility Summary for SimEvents Software

This table summarizes new features and changes that might cause incompatibilities when you upgrade from an earlier version, or when you use files on multiple versions. Details are provided in the description of the new feature or change.

Version (Release)	New Features and Changes with Version Compatibility Impact
Latest Version V4.1 (R2012a)	See the Compatibility Considerations subheading for each of these new features or changes: New Configuration Parameter for Prevention of Implicit Event Duplication Support for Fixed-Step Solvers Gateway Blocks Support Buses Enhanced Support for Simulink Subsystems Changed Use of Event Priority Parameter New Blocks Changes to Block Parameters
V4.0 (R2011b)	See the Compatibility Considerations subheading for each of these new features or changes: Major Changes to Discrete-Event Modeling Change in Entity Arrivals at Empty Queue Arrival of Entity Placed at Head of Queue Discrete Event Signal to Workspace Block Records Initial Value Statistical Output Signals Have Updates Throughout Simulation Configuration Parameter Race Condition Detection Changes Block, Event, and Entity Identifiers Set Attribute and Get Attribute Blocks Can Process at Most 32 Attributes Change in Execution Order of Simultaneous Events with Same Priorities New Blocks Do Not Support Accelerator Mode Blocks Being Removed Functions Being Removed
V3.1.2 (R2011a)	None
V3.1.1 (R2010b)	None
V3.1 (R2010a)	See the Compatibility Considerations subheading for each of these new features or changes: Block Operations Information in Debugger Changes in Behavior of Pending Entity Signals Parameters and Parameter Values Being Removed
V3.0 (R2009b)	None
V2.4 (R2009a)	See the Compatibility Considerations subheading for each of these new features or changes: Event Logging Options Removed from Configuration Parameters Dialog Box Discrete Event Signal to Workspace Block Clarifies Timing
V2.3 (R2008b)	None
V2.2 (R2008a)	None
V2.1 (R2007b)	See the Compatibility Considerations subheading for each of these new features or changes: Processing Events Via the Event Calendar Instead of Immediately Enhanced Support for Multiple Simultaneous Transitions in Switches and Gate
V2.0 (R2007a)	See the Compatibility Considerations subheading for each of these new features or changes: Attributes Support Multidimensional Values Timeout Feature Establishes Entity Time Limits Output Switch Block Options for Storage and Initial Condition
V1.2 (R2006b)	See the Compatibility Considerations subheading for each of these new features or changes: Event Translation Block Supports Delay from a Signal Routing Blocks Support Unlimited Entity Ports Initial Outputs of SimEvents Blocks History Options and Other Changes in Scope Blocks Parameters for Lognormal Distribution Livelock Detection
V1.1 (R2006a)	See the Compatibility Considerations subheading under Replicate Block Supports Partial Replication.
V1.0 (R14SP3+)	Not applicable

Version 1.0 (R14SP3+) SimEvents Software

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