Using Electric 11-5: Interpreter Attributes

Chapter 11: INTERPRETERS

11-5: Interpreter Attributes

When examining the database from the language interpreters, you have access to many attributes on the various objects. This section lists the predefined attributes on the different Electric objects. Those attributes with a (*) next to them are relatively important to database examination.

This section is not meant as a full explanation of the attributes in the Electric database, but rather is a quick list. For more detail on these and other aspects of Electric internals, see the Electric Internals Manual (a document that is available from Static Free Software).

These basic attributes exist on components (NODEINST):
	ATTRIBUTE	TYPE	DESCRIPTION
	aseen	Integer	flags for the database
	firstportarcinst	PORTARCINST	head of linked list of connecting arcs' ports
	firstportexpinst	PORTEXPINST	head of linked list of exports
	geom	GEOM	geometry module
*	highx	Integer	high X coordinate in database units
*	highy	Integer	high Y coordinate in database units
	lastinst	NODEINST	link to previous component of this type
	lastnodeinst	NODEINST	link to previous component in this cell
*	lowx	Integer	low X coordinate in database units
*	lowy	Integer	low Y coordinate in database units
	nextinst	NODEINST	link to next component of this type
	nextnodeinst	NODEINST	link to next component in this cell
*	parent	NODEPROTO	cell that contains this component
*	proto	NODEPROTO	type of this component
*	rotation	Integer	angle in degrees of this component
*	transpose	Integer	nonzero if component transposed after rot.
*	userbits	Integer	miscellaneous flags

These basic attributes exist on component prototypes (NODEPROTO):
	ATTRIBUTE	TYPE	DESCRIPTION
	adirty	Integer	flags for the database
*	cell	CELL	cell of which this cell is a part
*	cellview	VIEW	view of this cell
	creationdate	Integer	date this cell was created
	firstarcinst	ARCINST	head of list of wires in this cell
	firstinst	NODEINST	head of list of instances of this prototype
	firstnetwork	NETWORK	head of list of networks in this cell
	firstnodeinst	NODEINST	head of list of components in this cell
*	firstportproto	PORTPROTO	head of list of exports on this cell
*	highx	Integer	high X coordinate in database units
*	highy	Integer	high Y coordinate in database units
*	primindex	Integer	nonzero if this is a primitive prototype
	lastnodeproto	NODEPROTO	link to previous prototype in lib/tech
	lastversion	NODEPROTO	earlier version of this cell
*	lowx	Integer	low X coordinate in database units
*	lowy	Integer	low Y coordinate in database units
	newestversion	NODEPROTO	most recent version of this cell
	nextnodeproto	NODEPROTO	link to next prototype in lib/tech
	nextincell	NODEPROTO	next view in this cell
	revisiondate	Integer	date this cell was last modified
	rtree	RTNODE	root R-tree in this cell
*	primname	String	name of this primitives (if primitive)
*	tech	TECHNOLOGY	technology in which this primitive resides
*	userbits	Integer	miscellaneous flags
*	version	Integer	version number of this cell

These basic attributes exist on cells (CELL):
	ATTRIBUTE	TYPE	DESCRIPTION
*	cellname	String	name of this cell
*	firstincell	NODEPROTO	first cell in this cell
*	lib	LIBRARY	library containing this cell
*	nextcell	CELL	link to next cell in this library

These basic attributes exist on instantiated wire connections (PORTARCINST):
	ATTRIBUTE	TYPE	DESCRIPTION
*	conarcinst	ARCINST	wire that is connected at this port
	nextportarcinst	PORTARCINST	link to next instantiated wire connection
*	proto	PORTPROTO	prototype of the port that is connected

These basic attributes exist on instantiated export instances (PORTEXPINST):
	ATTRIBUTE	TYPE	DESCRIPTION
*	exportproto	PORTPROTO	export prototype on parent cell
	nextportexpinst	PORTEXPINST	link to next instantiated export connection
*	proto	PORTPROTO	prototype of the port that is an export

These basic attributes exist on connection prototypes (PORTPROTO):
	ATTRIBUTE	TYPE	DESCRIPTION
	aseen	Integer	flags for the database
*	connects	ARCPROTO array	array of arc types that may connect
*	network	NETWORK	network object
	nextportproto	PORTPROTO	link to next connection prototype
*	parent	NODEPROTO	component prototype with connection
*	protoname	String	name of connection
*	subnodeinst	NODEINST	origin component in cell
*	subportexpinst	PORTEXPINST	origin export component in cell
*	subportproto	PORTPROTO	origin port on component in cell
*	userbits	Integer	miscellaneous flags

These basic attributes exist on wires (ARCINST):
	ATTRIBUTE	TYPE	DESCRIPTION
	aseen	Integer	flags for the database
*	endshrink	Integer	data for nonmanhattan end shrinkage
*	geom	GEOM	geometry module
	lastarcinst	ARCINST	link to previous wire in cell
*	length	Integer	length in database units
*	network	NETWORK	network object
	nextarcinst	ARCINST	link to next wire in cell
*	nodeinst1	NODEINST	component on end 1
*	nodeinst2	NODEINST	component on end 2
*	parent	NODEPROTO	cell that contains this wire
*	portarcinst1	PORTARCINST	instantiated wire connection on end 1
*	portarcinst2	PORTARCINST	instantiated wire connection on end 2
*	proto	ARCPROTO	type of this wire
*	userbits	Integer	miscellaneous flags
*	width	Integer	width in database units
*	xpos1	Integer	X coordinate of end 1 in database units
*	xpos2	Integer	X coordinate of end 2 in database units
*	ypos1	Integer	Y coordinate of end 1 in database units
*	ypos2	Integer	Y coordinate of end 2 in database units

These basic attributes exist on wire prototypes (ARCPROTO):
	ATTRIBUTE	TYPE	DESCRIPTION
	arcindex	Integer	0-based index of this arc type
	nextarcproto	ARCPROTO	link to next arc type in this technology
*	nominalwidth	Integer	default wire width in database units
*	protoname	String	name of this wire type
*	tech	TECHNOLOGY	technology in which this wire type resides
*	userbits	Integer	miscellaneous flags

These basic attributes exist on networks (NETWORK):
	ATTRIBUTE	TYPE	DESCRIPTION
*	netname	String	name of this network
	namecount	Integer	number of names
	arccount	Integer	number of arcs on this network
	arcaddr	ARCINST array	address of arc(s) on this network
	refcount	Integer	number of arcs on network
	portcount	Integer	number of ports on this network
	buslinkcount	Integer	number of busses referencing this network
*	parent	NODEPROTO	cell that has this network
*	signals	Integer	width of bus or index into bus
*	networklist	NETWORK array	list of single-wire networks on bus
	nextnetwork	NETWORK	next in linked list
	lastnetwork	NETWORK	previous in linked list

These basic attributes exist on geometric objects (GEOM):
	ATTRIBUTE	TYPE	DESCRIPTION
*	entryisnode	Integer	nonzero for component
*	entryaddr	NODEINST or ARCINST	address of component or wire
*	highx	Integer	high X coordinate in database units
*	highy	Integer	high Y coordinate in database units
*	lowx	Integer	low X coordinate in database units
*	lowy	Integer	low Y coordinate in database units

These basic attributes exist on R-tree nodes (RTNODE):
	ATTRIBUTE	TYPE	DESCRIPTION
*	flag	Integer	nonzero if pointers are terminal (geom)
*	highx	Integer	high X coordinate in database units
*	highy	Integer	high Y coordinate in database units
*	lowx	Integer	low X coordinate in database units
*	lowy	Integer	low Y coordinate in database units
*	parent	RTNODE	parent R-tree node
*	pointers	RTNODE array	children (type depends on "flag")
*	total	Integer	number of children in this node

These basic attributes exist on cell libraries (LIBRARY):
	ATTRIBUTE	TYPE	DESCRIPTION
*	curnodeproto	NODEPROTO	currently edited cell in library
	firstcell	CELL	head of list of cells in library
	firstnodeproto	NODEPROTO	head of list of cells in library
	lambda	Integer array	values of lambda for all technologies
*	libname	String	name of this library
*	libfile	String	disk file associated with this library
	nextlibrary	LIBRARY	link to next library in Electric
*	userbits	Integer	miscellaneous flags

These basic attributes exist on design environment objects (TECHNOLOGY):
	ATTRIBUTE	TYPE	DESCRIPTION
*	deflambda	Integer	value of lambda in database units
	firstarcproto	ARCPROTO	head of list of wire types in this technology
	firstnodeproto	NODEPROTO	head of list of primitive components
	techindex	Integer	0-based index of this technology
*	nexttechnology	TECHNOLOGY	link to next technology in Electric
*	techdescript	String	long description of this technology
*	techname	String	short name of this technology
	userbits	Integer	miscellaneous flags (none at present)

These basic attributes exist on views (VIEW):
	ATTRIBUTE	TYPE	DESCRIPTION
*	nextview	VIEW	link to next view
*	viewname	String	name of this view
*	sviewname	String	abbreviated name of this view

These basic attributes exist on editing window partition objects (WINDOWPART):
	ATTRIBUTE	TYPE	DESCRIPTION
*	curnodeproto	NODEPROTO	cell in window
*	gridx	Integer	X spacing of grid
*	gridy	Integer	Y spacing of grid
	lastwindowpart	WINDOWPART	last in linked list
*	location	String	name of window
	nextwindowpart	WINDOWPART	next in linked list
	screenlx	Integer	low X coordinate in cell
	screenly	Integer	low Y coordinate in cell
	screenhx	Integer	high X coordinate in cell
	screenhy	Integer	high Y coordinate in cell
	state	Integer	miscellaneous information about window
	uselx	Integer	low X coordinate on screen
	usely	Integer	low Y coordinate on screen
	usehx	Integer	high X coordinate on screen
	usehy	Integer	high Y coordinate on screen

These basic attributes exist on graphical attribute objects (GRAPHICS):
	ATTRIBUTE	TYPE	DESCRIPTION
*	bits	Integer	bitplanes of color display
*	col	Integer	color to use
*	raster	Integer array	16x16 bit pattern

These basic attributes exist on editing constraint objects (CONSTRAINT):
	ATTRIBUTE	TYPE	DESCRIPTION
*	conname	String	name of constraint system
*	condesc	String	description of constraint system

These basic attributes exist on synthesis and analysis tools (AID):
	ATTRIBUTE	TYPE	DESCRIPTION
*	aidname	String	name of this tool
*	aidstate	Integer	miscellaneous flags
*	aidindex	Integer	0-based index of this tool

These basic attributes exist on polygons (POLYGON):
	ATTRIBUTE	TYPE	DESCRIPTION
*	count	Integer	number of points
*	desc	GRAPHICS	graphic appearance
*	font	Integer	font size
*	layer	Integer	layer number
	limit	Integer	max allocated points
*	portproto	PORTPROTO	port association
*	string	String	message (if text style)
*	style	Integer	style
*	tech	TECHNOLOGY	technology
*	xv	Integer array	X coordinate values
*	yv	Integer array	Y coordinate values

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