The Log manual was originally written in a hypertext system that
Dave Gillespie wrote for the HP
9836C systems at Caltech. Dave also wrote the manual. The manual
was translated into raw ASCII during the Unix
port. The following version of the manual returns the hyperlinks to
parts of the document. Eventually, the entire manual will have the
look-and-feel of the General Information section.
The Log Reference Manual
Other Documents for Analog Users
The Log reference manual above covers all aspects of the Log system. Users
only interest in circuit simulation may want to first read some of the
- Postscript manual
- Michael Godfrey converted parts of the Log manual into a guide for analog
simulation users, in Postscript. Press here to
view the document. This document does not include information
on the new FET7 transistor models (see below).
- Interactive lessons
- A series of 5
annotated circuit schematics, log/lib/lesson1.lgf through
log/lib/lesson5.lgf, form an interactive way to learn about
Analog by using Analog. Developed by Dave Gillespie.
- Pocket reference
- A set of 28 tips for the novice Analog user. Most ways novices get
stuck while learning Analog are in this guide,
written by Dave Gillespie.
- Device model details
- The new FET7 series MOS models are explained and characterized in
this paper [Adobe PDF, 680 KByte, requires Acroread
3.0] by Michael Godfrey and John Lazzaro (draft 2.2). The obsolete
FET5/FET6 models are described in this paper by
Michael Godfrey. Jamie Honan has written a document describing the
diode model used in analog; press here to
read this document.
- Simulation engine details
- For information on how the simulation engine in analog works, see this Postscript document by John Lazzaro --
note the transistor models described in this document are no longer
used in analog. The models described are the obsolete NFET4
and PFET4 gates, included in analog only for backwards
- Adding new gates to Analog
- I'm often asked how to add new gates to analog. I've prepared this
description of the process.
For Advanced Users
Advanced users will want to check out the examples package, which
contains a VLSI chip design and an Actel FPGA design. These examples
show Log in use in a practical way. Press here for information on picking up
the examples package.
- john [dot] lazzaro [at] gmail [dot] com