LDE(10.1) LDE(10.1)
NAME
LDE, lde - logic design equation programs
SYNOPSIS
lde [ option ] [ filenames ]
LDE [ option ] [ filenames ]
DESCRIPTION
Lde is the front end of a set of programs that prepare data
for fuse-programmable logic elements. It accepts an expres-
sion language described in lde_format(10.6) on its standard
input or from the named files, and writes an interpretation
on its standard output. Lde produces minterms in
minterm(10.6) output which may be reduced by quine(10.1) and
cover(10.1). The options are:
-o Produce octal output (rather than the decimal default)
-x Produce hex output.
-L Put a the sum of products representation of the output
on the standard error file.
-d -v -T
Produce other stuff to help debug the program.
Numeric parameters may be passed from the command line with
-n where n is decimal. The (zero based) mth numeric
parameter is substituted for the symbol $m in the
input.
LDE is an analog of lde that has some restrictions on the
input specification, produces a cover that is often, but not
necessarily minimal, but runs much faster. LDE takes some
more options:
-L Output a sum of products representation to standard
error.
-I Also calculate the complements of the logic functions.
-X Also calculate the xor of the output signals with their
logic functions (useful for programmable parts that
support toggle flip-flops).
SEE ALSO
lde(10.6), minterm(10.6), cdl(10.6), quine(10.1),
xpal(10.1), urom(10.1), cdm(10.1)
LDE(10.1) LDE(10.1)
BUGS
LDE does not support 'don't cares' or multiplication, divi-
sion, modulo, or right and left shifts by variables.