Specifications

Saving Frequently-Used Graphics and Pins 173
Simulator
The type of the pin must be set correctly if simulations are to make sense. For
signal sources like +5V, +15V, and Vss, a normal simulation would expect a
logical value of 1 (True). For signal sources like Ground and Vdd, a logical
value of 0 (False) is expected. This means the pin type should be “Tied High” or
“Tied Low” (See “Setting the Pin Type” on page 165).
If you don't want the signal connector to supply a signal value, but only its name
and the fact that it makes the signal global, then the pin type should be set to
“Input”.
Creating a Port Connector
Port connectors have the property of associating a signal or bus with a pin on an
enclosing part. The association is made by name. The port's Name is compared
to the pin names on the parent part. Internal pins in busses are matched by pin
name.
 See “Port Interface” on page 52 for more information on port
connectors.
Creating a Signal Port Connector
A port connector for a signal must have a pin which is of the correct type to
interface the signal to the parent part's pin. For example, an input pin on the port
connector would be correct to connect to a output pin on the parent part. The
name of the port connector pin is not important. Only the name assigned to the
port connector once it is placed is important; it must be the same as the parents
pin.
Creating a Bus Port Connector
A port connector for a bus must have a bus pin which contains pins of the correct
type. For example, a bus pin with three internal pins A (input), B (input), and C
(output) would be correct to connect to a parent part's bus pin which contained
pins A (output), B (output), C (input). The name of the port connector bus pin is
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