How Do I Tie an Input High (Logic ‘1’) or
Low (Logic ‘0’) in FastChip?

To tie an input to a logical ‘1’ or ‘0’ in FastChip, just type in the value “vcc” or “gnd” respectively.  The signal names “vcc” and “gnd” are special reserved names within FastChip, as shown in Table 1.

Table 1.  FastChip Reserved Names for Logical High and Low.

Reserved Name	Logical Value
vcc	‘1’, High
gnd	‘0’, Low

You can also see these values in FastChip’s connection browser. 

Click the magnifier icon () next to the signal port to invoke the connection browser.  Click the minus sign (-) to expand View Options.  Choose Flat View and check Show single-net bits.  The reserved names “gnd” and “vcc” are visible in the list.

FastChip Version: 2.4.0

This solution may or may not apply to other versions of the FastChip development system.

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