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losig(3) [opendarwin man page]

LOSIG(3)						 MBK LOGICAL STRUCTURE DEFINITIONS						  LOSIG(3)

NAME
losig - mbk logical signal DESCRIPTION
The losig is used to describe a logical signal. The declarations needed to work on losig are available in the header file "/labo/include/mlo404.h", where '404' is the actual mbk version. The following C structure supports the description of the logical signal : typedef struct losig { struct losig *NEXT; struct chain *NAMECHAIN; float CAPA; long INDEX; char TYPE; struct ptype *USER; } losig_list; NEXT Pointer to the next losig of the list. INDEX Long integer beeing the signal identifier. It represents the net number at a given hierachical level, and must be unique. NAMECHAIN Pointer to a list of names, aliases, attached to the signal. If no names are given then the field points to NULL. Many names can be present if the signal result of the flatten of a netlist. See chain(3) for details. CAPA Floating point number containing the value of the total capacitance attached to a signal in respect to ground. This field may be set to zero, since it make sens only if the signal is the result of a layout extraction, or has been used for electrical simulation purposes. TYPE This field can take two legal values depending on the types of the connectors attached to it. See locon(3) for detail. EXTERNAL The signal is connected at least to one external connector, a connector of the figure beeing described. INTERNAL The signal is connected only to instances or transistors connectors. The tools using the TYPE should fill it with care, since unexpected results may appear if the consistency with connec- tors is violated. USER Pointer to a ptype list, see ptype(3) for details, that is a general purpose pointer used to share informations on the signal. Remark : the netlist view is given in terms of connectors pointing to signals, but it may be useful to have also the dual repre- sentation, in term of list of connectors attached to a single signal. This may be obtained by the lofigchain function. SEE ALSO
mbk(1), addlosig(3), getlosig(3), dellosig(3), lofigchain(3), locon(3), lofig(3), chain(3), ptype(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. ASIM
/LIP6 October 1, 1997 LOSIG(3)

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LOCON(3)						 MBK LOGICAL STRUCTURE DEFINITIONS						  LOCON(3)

NAME
locon - mbk logical connector DESCRIPTION
The locon is used to describe a connector of the logical view of a figure. Connectors are describing the cell interface, and are the link between its physical and logical views, so the names must be the same. The declarations needed to work on locon are available in the header file "/labo/include/mlo404.h", where '404' is the actual mbk version. The following C structure supports the description of the logical connector : typedef struct locon { struct locon *NEXT; char *NAME; struct losig *SIG; void *ROOT; char DIRECTION; char TYPE; struct ptype *USER; } locon_list; NEXT Pointer to the next locon of the list. NAME Name of the connector. It identifies the connector, so it should unique in a given logical figure. A logical connector with a given name correspond to the physical connector or connectors of this name. SIG Pointer to the signal linked to the connector. This signal is, of course, unique. See losig(3) for details. ROOT Pointer to the object it belongs to. This object may be either a lofig, or a loins, depending on the type of the con- nector. See lofig(3) and loins for details. DIRECTION This indicates the way of the information going through the connector. Six directions are legal : IN input OUT output INOUT input and output UNKNOWN no information is available TRISTATE tristate output TRANSCV tristate output and input TYPE Character indicating if the connector belongs to a model or an instance. It can take two values : EXTERNAL for figure connectors INTERNAL for instance connectors The TYPE is needed to appropriatly cast the ROOT field, and must be approriatly filled by the parsers. A misuse of it may cause strange behaviours. USER Pointer to a ptype list, see ptype for details, that is a general purpose pointer used to share informations on the connector. SEE ALSO
mbk(1), mbk(3), addlocon(3), getlocon(3), dellocon(3), losig(3), ptype(3), loins(3), lofig(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. ASIM
/LIP6 October 1, 1997 LOCON(3)
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