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readme
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1992-05-06
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AmigaSpice 2.3 is a version of SPICE 2G.6 which has been modified
to run in the Amiga environment. The program arrays are adjusted to
require one forth the memory of the DEC VAX version. Although this
does not usually put much of a constraint on circuit analysis, some users
who are used to the full mainframe environment may have to be more aware
of the memory demands of their analysis. The minimum memory requirement
in an Amiga is a total (chip+fast) of 1.5 Megabytes. The run-time
requirements for the program slightly exceed 1.1 MegaBytes so that
although multi-tasking is allowed, a minimum memory Amiga will not allow
many other tasks to run simultaneously. This version neither supports
nor requires the 68020 processor or 68881 coprocessor.
Although the program has been beta tested for several weeks with
circuit sizes of up to 75 nodes without any bugs having been found, some
may exist. Please report them to me via my CompuServe account [71106,24]
or on the AmigaTech Forum.
If you have never used SPICE please read the manual first! In use
a "spice" input file is first created (yes, this really is SPICE2G.6 not
3.x) using the editor of your choice. Then the program is invoked to
process the input file creating an output file. The input file must have
a ".INP" (without the quotes) extension. The resulting output file will
have the same file name as the input file but with a ".OUT" extension.
The program is invoked by:
spice <file name>
where <file name> is the input file name WITHOUT any extension.
Invocations of the form:
spice ?
or
spice
will result in a display of the usage information.
Spice will exit to the CLI without comment if there is not enough free
contiguous memory available.
Although all mainframe SPICE options will be recognized, some will
be ignored. All debug and accounting commands are disabled. Similarly
the maximum run-time limit has bypassed.
For those interested this program was compiled from a modified
FORTRAN source of more than 18000 lines using the ABSOFT FORTRAN
compiler version 2.3. Total compile and link time using a hard disk and
2 MegaBytes of RAM required less than 15 minutes. While the program doesn't
execute as fast as a VAX it easily beats the versions on out PCs at work
and is a very useful program for engineering at home.