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authortg <tg@FreeBSD.org>1996-10-16 06:53:54 +0000
committertg <tg@FreeBSD.org>1996-10-16 06:53:54 +0000
commit519628fd3835be4552e9f37b9d25fa7cfab4d3d2 (patch)
treed12f7d58568bcbb3056b391d592445646018ab34 /cad/acs/pkg-descr
parentc5cc7995c7fa211bb5d7fe72c179c34bfa60dfa2 (diff)
downloadFreeBSD-ports-519628fd3835be4552e9f37b9d25fa7cfab4d3d2.zip
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Trim DESCR to less than a screenful.
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@@ -17,32 +17,3 @@ bipolar design.
In batch mode it is mostly Spice compatible, so it is often possible
to use the same file for both ACS and Spice.
-
-The analog simulation is based on traditional nodal analysis with
-iteration by Newton's method and LU decomposition. An event queue
-and incremental matrix update speed up the solution for large
-circuits.
-
-It also has digital devices for mixed signal simulation. The
-digital devices may be implemented as either analog subcircuits or
-as true digital models. The simulator will automatically determine
-which to use. Networks of digital devices are simulated as digital,
-with no conversions to analog between gates. This results in
-digital circuits being simulated faster than on a typical analog
-simulator, even with behavioral models. The digital mode is
-experimental and needs work. There will be substantial improvements
-in future releases.
-
-ACS also has a simple behavioral modeling language that allows
-simple behavioral descriptions of most components including capacitors
-and inductors. Unfortunately, it is not well documented.
-
-ACS uses an object oriented approach to modeling. Complex models
-like MOSFETS are made of simpler ones like resistors, capacitors,
-diodes, and any other models that may already exist. The model
-designer does not need to worry about details like convergence
-checking, bypass checking, integration, or how the new device plugs
-into the solution matrix because these are already taken care of
-by the basic models. This results in a dramatic improvement in
-the time it takes a researcher or model designer to install a new
-model, compared to Spice.
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