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AR# 15708

5.1i XST - XST does not always infer the FSM in my chosen coding style


Keywords: XST, FSM, one-hot, 5.1i, sequential, grey, coding, code

Urgency: Standard

General Description:
XST does not always infer the FSM in my chosen coding style.


XST does not currently perform FSM synthesis if no reset signal exists. (The capability for FSM synthesis without a reset signal will be added to a future XST release.)

To work around this issue, manually set the encoding type using the ENUM_ENCODING attribute.

For more information about FSM encoding, please see Chapter 4 of the Synthesis and Simulation Design Guide at:
AR# 15708
Date 10/20/2005
Status Archive
Type General Article