NAME¶
GENLIB_LOSIGMERGE - merge two logical signals
SYNOPSYS¶
#include <genlib.h>
void GENLIB_LOSIGMERGE(signal1, signal2)
char ∗signal1, ∗signal2;
ORIGIN¶
This software belongs to the ALLIANCE CAD SYSTEM developed by the ASIM team at
LIP6 laboratory of Université Pierre et Marie CURIE, in Paris,
France.
Web :
http://asim.lip6.fr/recherche/alliance/
E-mail :
alliance-users@asim.lip6.fr
PARAMETERS¶
- signal1
- Name of a signal to be merged
- signal2
- Name of a signal to be merged
DESCRIPTION¶
LOSIGMERGE merges the two signals,
signal1 and
signal2.
This function can be used anywhere in the
genlib program, but its
resultings actions must be known by the user.
- 1)
- If signal1 and signal2 have not been used
yet, then the corresponding signal can be later accessed through any of
these aliases.
- 2)
- If one of signal1 or signal2 has not been
used yet, then all further reference to the not defined name will be made
on the same signal than the defined signal.
- 3)
- If both signals exist, then they are merged, and both can
be used for reference to the same signal later on.
Since most of the file formats do not allow multiple name for a single signal,
the choice is made to keep for disk usage the name that appears in the cell
interface, if any. Otherwise, the choice is randomly made by
LOSIGMERGE.
- Warning
- This function allows the user to internally connect two
external connectors. This is not a valid disk representation for
netlist generated by genlib. The SAVE_LOFIG function will
exit if encountering such a situation.
In order to avoid it, either take care not to link such signals, or build
all your hierarchy in memory, make sure your block does not have such
signals, and call FLATTEN_LOFIG(3) just before saving.
EXAMPLE¶
#include <genlib.h>
main()
{
/∗ Create a figure to work on ∗/
GENLIB_DEF_LOFIG("cell");
/∗ Define interface ∗
GENLIB_LOCON(...
/∗ Place an instance ∗/
GENLIB_LOINS("no2_y" ,"no3" ,"a8_s" ,"a9_s" ,"new_no3_s" ,"vdd" ,"vss" ,0);
GENLIB_LOINS("no2_y" ,"no4" ,"a12_s" ,"a15_s" ,"no4_s" ,"vdd" ,"vss" ,0);
GENLIB_LOINS("a2_y" ,"a22" ,"no3_s" ,"no4_s" ,"a22_s" ,"vdd" ,"vss" ,0);
GENLIB_LOSIGMERGE("new_no3_s", "no3_s");
/∗ Save all that on disk ∗/
GENLIB_SAVE_LOFIG();
}
SEE ALSO¶
genlib(1),
GENLIB_LOINS(3),
GENLIB_LOCON(3),
GENLIB_FLATTEN_LOFIG(3),
GENLIB_SAVE_PHFIG(3).
BUG REPORT¶
This tool is under development at the
ASIM department of the
LIP6
laboratory.
We need your feedback to improve documentation and tools.