GENPAT(1) ALLIANCE USER COMMANDS GENPAT(1) NAME genpat, A procedural pattern file generator SYNOPSIS genpat [-v] [-k] [file] DESCRIPTION Genpat is a set of C fonctions that allows a procedural description of in- put pattern file for the logic simulator ASIMUT. The Unix genpat command accepts a C file as input and produces a pattern description file as out- put. The extension ".c" is not to be given. The file generated by genpat is in pat format, so IT IS STRONGLY RECOMMENDED TO SEE pat(5) BEFORE THIS MAN- UAL. OPTIONS -v verbose mode -k keeps the executable along with the compilation Makefile af- ter completion GENPAT FILE FORMAT From a user point of view, genpat is a pattern description language using all standard C facilities (include, define, variables, loop, ...). Fonc- tions provided by genpat are to be used in a given order. Using them in a different order won't crash the system, but will result in execution er- rors. Here follows the description of the input file. A pat format file can be divided in two parts : declaration and description part. The declaration part is the list of inputs, outputs, internal signals and registers. Inputs are to be forced to a certain value and all the others are to be observed during simulation. The description part is a set of patterns, where each pattern defines the value of inputs and outputs. The pattern number represents actually the ab- solute time for the simulator. Similarly, a genpat file can be divided in two parts : declaration and de- scription part. Functions related to the declaration must be called before any function related to the description part. declaration part The first thing you should do in this part is to give the output file's name (see DEF_GENPAT(3)). Then, this part allows you to declare the inputs, the outputs, and internal observing points (see DECLAR(3)). It is also possible to create virtual arraies (see ARRAY(3)). description part After all signals are declared, you can begin to define input values which are to be applied to the inputs of the circuit or output values which are to be compare with the values produced during the simulation. (see AFFECT(3)). Genpat describes the stimulus by event : only signal transitions are described. This part also allows you to give instructions to the simulation tool to save the state of the circuit at the end of the simulation. (see SAVE(3)). Last thing you should do in this part is to gener- ate the output file (see SAV_GENPAT(3)). FUNCTIONS DEF_GENPAT() defines the output file's name. SAV_GENPAT() make the output file be generated DECLAR() declares inputs, outputs, and the internal observing points. ARRAY() allows signals of the same type to be groupped in an "vir- tual array" in order to ease their manipulation INIT() changes the values of registers between two patterns. AFFECT() assigns a value to a signal, at a given pattern number. This value is kept on the signal until a new value is assigned to the signal. SAVE() informs the simulation tool to save the state of the circuit at the end of simulation LABEL() gives a label to the current pattern GETCPAT() return the number of the current pattern EXAMPLES #include <stdio.h> #include "genpat.h" char *inttostr(entier) int entier; { char *str; str = (char *) mbkalloc (32 * sizeof (char)); sprintf (str, "%d",entier); return(str); } /*------------------------------*/ /* end of the description */ /*------------------------------*/ main () { int i; int j; int cur_vect = 0; DEF_GENPAT("example"); /* interface */ DECLAR ("a", ":2", "X", IN, "3 downto 0", "" ); DECLAR ("b", ":2", "X", IN, "3 downto 0", "" ); DECLAR ("s", ":2", "X", OUT, "3 downto 0", "" ); DECLAR ("vdd", ":2", "B", IN, "", "" ); DECLAR ("vss", ":2", "B", IN, "", "" ); LABEL ("adder"); AFFECT ("0", "vdd", "0b1"); AFFECT ("0", "vss", "0b0"); for (i=0; i<16; i++) { for (j=0; j<16; j++) { AFFECT (inttostr(cur_vect), "a", inttostr(i) ); AFFECT (inttostr(cur_vect), "b", inttostr(j) ); cur_vect++; } } SAV_GENPAT (); } ENVIRONMENT VARIABLES Genpat reads the environment variable VH_PATSFX to give the result file an extension. SEE ALSO AFFECT(3), ARRAY(3), DECLAR(3), DEF_GENPAT(3), GETCPAT(3), INIT(3), LA- BEL(3), SAVE(3), SAV_GENPAT(3), pat(5), asimut(1) ASIM/LIP6 October 1, 1997 GENPAT(1)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | GENPAT FILE FORMAT | FUNCTIONS | EXAMPLES | ENVIRONMENT VARIABLES | SEE ALSO
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