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Chapter 11: Using the State Machine Library
Using the State Machine Editor Block
DSP Builder marks the first state that you enter in the wizard as the default
state. This state is the empty state and is the state to which the state machine
transitions when you assert the reset input.
12. On the Tools menu in the Quartus II State Machine Editor, click Generate HDL
File to display the Generate HDL File dialog box. Select VHDL and click OK to
confirm your choice. Click Yes to save the fifo_controller.smf file and check that
there are no FSM verification errors.
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There are five warning messages stating that FSM verification skips in each
state. You can ignore these messages.
If there are any errors, you can edit the state machine using the Properties dialog
boxes that you can display from the right button pop-up menu when you select a
state or transition. You can also edit the state machine in table format by clicking
the tabs at the bottom of the State Machine Editor window.
f For information about editing state machine properties and drawing a graphical state
machine, refer to the About the State Machine Editor topic in the Quartus II Help.
13. On the File menu in the Quartus II State Machine Editor, click Exit .
The fifo_controller block on your model updates with the input and output
ports defined in the state machine.
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You may need to resize the block to ensure that the input and state names
do not overlap and are displayed correctly.
Figure 11–11 shows the updated fifo_controller block for the FIFO design
example.
Figure 11–11. fifo_controller Block After Closing the State Machine Editor
DSP Builder Handbook
Volume 2: DSP Builder Standard Blockset
November 2013 Altera Corporation
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