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| Element | XC3000 | XC4000E | XC4000X | XC5200 | XC9000 | Spartan | SpartanXL | Spartan2 | Virtex |
|---|---|---|---|---|---|---|---|---|---|
| INV | Primitive | Primitive | Primitive | Primitive | Primitive | Primitive | Primitive | Primitive | Primitive |
| INV4, INV8, INV16 | Macro | Macro | Macro | Macro | Macro | Macro | Macro | Macro | Macro |
INV, INV4, INV8, and INV16 are single and multiple inverters that identify signal inversions in a schematic.
Figure 6.46 INV8 Implementation XC3000, XC4000E, XC4000X, XC5200, XC9000, Spartan, SpartanXL, Spartan2, Virtex