| Simulink Release Notes |     ![]()  | 
Upgrading from an Earlier Release
This section describes an upgrade issue involved in moving from Simulink 4.1 to Version 5.0.
If you are upgrading from a version earlier than 4.1, then you should see Upgrading from an Earlier Release in the Simulink 4.1 Release Notes.
BlockInstanceData Function Deprecated
S-functions should no longer call the BlockInstanceData function. All data used by a block should be declared using data type work vectors (e.g., DWORK).
   | Platform Limitations for HP and IBM | Known Software and Documentation Problems | ![]()  |