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- ; This example shows how PRIORITY can be used to correctly route a one
- ; sided board which was otherwise un-route-able.
- ; ex1 - the example file without 'priority' keyword
- ; ex2 - the example file after adding 'priority' keyword to 2 of the lines.
-
- dimension (15,30)
-
- include pcbinc:ttl7400.inc
-
- ; power and ground are supplied here
- hole (3,20)
- hole (3,25)
-
- ; ~R - input
- hole (15,5)
- ; ~S - input
- hole (15,7)
-
- ; Q - output
- hole (3,9)
- ; ~Q - output
- hole (3,11)
-
- ; four instances of the above chip
- chipat (6,5) name=nand0 type=ttl7400 orientation=normal
-
- ; connect power and ground to all chips
- connect (3,20) and nand0.vcc
- connect (3,25) and nand0.gnd
- priority connect (15,5) and nand0.a1
- priority connect (15,7) and nand0.a2
- connect nand0.y1 and nand0.b2
- connect nand0.y2 and nand0.b1
- connect nand0.y1 and (3,9)
- connect nand0.y2 and (3,11)
-