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- COMBINATORIAL
- Overview
- This optional reserved word defines the output type for devices with
- programmable outputs. When a pin or node is defined as combinatorial,
- the logic output is immediate; the output value is not stored.
-
- Device Support: All devices except the PAL16R8, PAL20R8, and PAL20X10.
- ·
- Syntax
- You include the optional reserved word in the pin or node statement of
- Boolean and state-machine designs.
-
- Syntax───────────────────────────────────────────────────────────────
- Pn Number Location_Name Storage
- Example──────────────────────────────────────────────────────────────
- PIN 14 OUT1 COMBINATORIAL
- NODE 15 OUT2 COMB
- ─────────────────────────────────────────────────────────────────────
- ·
- Definitions
-
- Only the reserved word, COMBINATORIAL, is discussed below.
-
- Storage Assign COMBINATORIAL as a value to define a specific
- pin or node storage type. Combinatorial is also the
- default when you do not specify a storage type.
-
- ■ Place the reserved word, COMBINATORIAL, after the
- pin or node name in the corresponding statement.
-
- ■ Use either the complete word, COMBINATORIAL, or the
- four-letter abbreviation, Comb.
- ·
- Use
- There are two ways to enter the storage type.
-
- ■ Use the declaration segment form, select the Storage field,
- display the option list, and select an option.
-
- ■ Type the storage value in the appropriate pin or node statement
- in the PDS file using a text editor.
- ·
- Related Topics
- Declaration Segment
- LATCHED
- NODE
- PIN
- REGISTERED
- ·
-