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LDE(10.1) LDE(10.1) NAME lde - logic design equation programs SYNOPSIS lde [ option ] [ filename ] DESCRIPTION lde is the front end of a set of programs that prepare data for fuse- programmable logic elements such as roms or pla's. It accepts an ex- pression language, lde(10.5), on its standard input or from filename and writes an interpretation on its standard output. The output format is selected by options on the command line. The options are: -p A single number is written on each output line as required by prom(10.1) or drom(10.1). The pin numbers in the .i and .o ar- eas of the input are not used, instead, the order of appearance of of variable names is used to assign their bit positions in the address and data of the output. This is the default action. -x Produce hex output instead of the default octal only when used with the above. -a Produce minterm(10.5) output for the quine(10.1) program. Pin numbers in the .i and .o areas of the input are carried through to the output. -w Produce a macro definition in cdl(10.5) for use by cdm(10.1). Pin numbers in the .i and .o areas are used only if they are as- sociated with the variable name with a `:', other variable names do not appear in the output. -W Produce a chip descriptor file in the form of /usr/ucds/lib/lib/pins for use by cdm(10.1)or cdmglob(10.1). -d -v -T -o 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 occurence of -n sub- stitutes the value n for the symbol $m in the input. SEE ALSO lde(10.5), minterm(10.5), cdl(10.5), quine(10.1), pal(10.1), drom(10.1), cdm(10.1) FILES BUGS An output may appear or the left of the assignment operator more than once in which case lde produces unpredictable output without comment. An output may have been declared but not have been assigned to; no di- agnostic is given. Also, .tt lines must not have a space between pin declarations. UCDS LDE(10.1)