++For example, on the drawing below U1 is a digital device that has two ports, +one input, one output. The input port has spice/bridge/model set to +bridge_adc_ttl, the outpout port has it set to bridge_dac_ttl; +spice/bridge/dir is not set. These models are shipped with sch-rnd stock spice +lib. +
+
+
+Since directions are not set, they are assumed n1p2 for *adc* on the input
+and p1n2 for the *dac* on the output. This means the adc's port1 is
+connected to the original network (orig_analog_1), port2 to the original
+(digital) port of U1, while on the dac port1 is connected to U1's port and
+port 2 is to the original network (orig_analog_2). Two dummy networks are
+introduced. These are all shown in the abstract model and end up on the
+exported netlist, but they are not graphically visible on the drawing.
Index: trunk/doc/user/07_io/export_spice/bridge.svg
===================================================================
--- trunk/doc/user/07_io/export_spice/bridge.svg (nonexistent)
+++ trunk/doc/user/07_io/export_spice/bridge.svg (revision 7794)
@@ -0,0 +1,540 @@
+
+
Index: trunk/doc/user/07_io/export_spice/src/bridge.rs
===================================================================
--- trunk/doc/user/07_io/export_spice/src/bridge.rs (nonexistent)
+++ trunk/doc/user/07_io/export_spice/src/bridge.rs (revision 7794)
@@ -0,0 +1,328 @@
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+ ha:attrib {
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+ }
+ }
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