Frm: IEEE Std 1364™-2001, IEEE Standard Verilog® Hardware Description Language

The tri0 and tri1 nets model nets with resistive pulldown and resistive pullup devices on them. When no driver drives a tri0 net, its value is 0. When no driver drives a tri1 net, its value is 1. The strength of this value is pull. See Clause 7 for a description of strength modeling.

A tri0 net is equivalent to a wire net with a continuous 0 value of pull strength driving it. A tri1 net is equivalent to a wire net with a continuous 1 value of pull strength driving it.

A truth table for tri0 is shown in Table 6. A truth table for tri1 is shown in Table 7.

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