Specifications

158 Chapter 8—Device Symbol Editing
Placing Pins on a Symbol
The toolbar contains the tools needed to place connection pins on the symbol.
 The first group of pin tools is used to create normal pins (i.e. not bus pins) on
the part in any of the four orientations.
 The second group of pins are used to place bus pins on the part in any of the
four orientations. Bus pins are described in more detail in “Placing a Bus
Pin” on page 161.
TIP: You can also place pins or groups of pins from the Symbol Gallery
window. If you have special types of pin graphics or groupings of multiple
pins that you use often, you can place these in the Symbol Gallery for quick
access. See “Adding Elements to the Symbol Gallery” on page 163 for more
information.
When placing pins, a graphical pin is associated with a name in the pin list. The
association is made by applying the following rules and using the first one that
matches.
 Associate a selected pin name in the pin list which is unplaced and is of the
same type. I.e.: normal pins can't be associated with bus pin names or
internal bus pin names.
 Associate an unplaced pin name of the correct type which follows the first
selected pin name. Pin names are examined in a cyclic order so if the bottom
of the pin list is reached the search continues from the beginning.
 If no association is made then a new pin name of the correct type is created
and added to the bottom of the list.
Pin Snap Spacing This number determines the snap-to grid for
device pins. This must be a multiple of 5 to
meet the LogicWorks pin grid requirements.
The units are in screen dots at the default
zoom level.
LW Reference.bk Page 158 Monday, December 15, 2003 5:59 PM