Brain Imaging & Analysis Center

CIGAL Reference Manual, Chapter 4 (Variables): Contents

Chapter 4 -- Descriptions of internally defined variables

The following is a brief summary of the internal variables CIGAL uses to control various aspects of its operation.

Aflags	integer variable controlling arithmetic options
Alevel	integer variable controlling current alarm level
Aspect	real variable containing screen aspect ratio
Bitmask	integer variable specifying image memory bitplane mask
Calbar	real variable containing length of SKETCH calibration bar
Calfact	real variable containing SKETCH calibration factor
Camera	integer variable controlling the video camera input channel
Cgain	integer variable controlling the video camera gain
Chkkey	integer pseudo-variable for checking status of key I/O
Chrhgt	integer variable specifying height of text character in pixels
Chrwid	integer variable specifying width of text character in pixels
Clock	integer pseudo-variable for counting ticks of the system clock
Cmdlin	string variable containing startup command line
Cmdprog	string variable containing CIGAL executable file
Coffset	integer variable controlling the video camera offset
Com1	integer variable controlling first serial I/O port
Com2	integer variable controlling second serial I/O port
Cpuspeed	real variable containing effective CPU speed
Ctrap	string variable containing commands to be executed upon Ctrl-C
Curdir	the current working directory name
Cursor	integer variable controlling cursor options
Cursx	integer pseudo-variable for reading current cursor Xposition
Cursy	integer pseudo-variable for reading current cursor Y position
Datadir	string variable containing filename template for data files
Day	integer pseudo-variable containing current month and day
Debug	integer variable controlling printing of diagnostic messages
Dflags	integer variable controlling disk I/O options
Digio	integer pseudo-variable specifying value of digital i/o port
Diskhi	integer variable identifying last data disk
Disklo	integer variable identifying first data disk
Drawkeys	string variable specifying SKETCH lookup table for cursor keys
Editor	string variable specifying editor program to execute for EDIT
Freestack	long pseudo-variable containing total free stack space
Getx	integer pseudo-variable for reading cursor Xposition
Gety	integer pseudo-variable for reading cursor Y position
Gflags	integer variable controlling vector graphics options
Gplane	integer variable specifying image processor plane for graphics
Gunit	integer variable specifying device to use for graphics
Hdrbar	integer variable specifying pixel height of window header bar
Helpfile	string variable specifying pathname of CIGAL help file
Himembase	long variable specifying high memory page base address
Himemflags	integer variable specifying high memory options
Himemfree	long variable amount of unused high memory space in bytes
Himemsize	integer variable specifying size of expanded memory in Kbytes
Hour	integer pseudo-variable containing current hour and minute
Hplane	integer variable specifying screen page to use for HELP output
Hstack	long array providing access to expanded memory (HIGH) stack
Ibase	integer variable controlling default number base for input
Iflags	integer variable controlling image processor options
Iplane	integer variable specifying active image processor memory
Keyrd	integer pseudo-variable reads a key from keyboard or cursor
Lastvec	integer variable
Lcolor	integer variable specifying graphics line drawing intensity
Lpat	integer variable specifying graphics line drawing pattern
Lpt100	integer variable associated with printer port data register
Lpt101	integer variable associated with printer port
Lpt102	integer variable associated with printer port
Lwidth	integer variable specifying graphics line drawing width
Macrofile	string specifying name of the file containing stored macros
Mainscreen	integer variable indicating which monitor is the main screen
Maxmem	long pseudo-variable containing largest block of free memory
Menufile	string specifying name of the file containing stored menus
Menuflag	integer pseudo-variable containing active menu status flag
Menuid	integer pseudo-variable containing active menu ID number
Mnubar	integer pseudo-variable specifying menu bar height in pixels
Nargs	integer pseudo-variable containing # of args to current macro
Nscreens	integer variable indicating number of monitors detected
Nvdata	long pseudo-variable containing number of entries in VDATA
Nvecs	long pseudo-variable containing number of vectors in VECS
Obase	integer variable controlling default number base for output
Outlun	integer pseudo-variable containing current text output channel
Path	string variable of directories to search for macros and menus
Penwidth	integer variable specifying number of printer dots per pixel
Pflags	integer variable controlling process run-time options
Prcodes	string list of device dependent printer commands
Prdots	matrix specifying printer dot patterns for pixel intensities
Prflags	integer variable controlling printer settings
Prlut	array lookup table for translating intensity values to printer
Prompt	character string displayed when waiting for command input
Prpage	integer variable specifying number of lines per printer page
Prwide	integer variable specifying width (in chars.) of printer page
Quitstr	string to be executed by QUIT command before leaving CIGAL
Rdhdr	string variable containing text read from data file header
Scrhgt	integer variable specifying screen height in pixels
Scrwid	integer variable specifying screen width in pixels
Secs	integer pseudo-variable with seconds portion of current time
Sflags	integer variable controlling SKETCH options
Simage	pointer to variable containing data for SEARCH, SAMPLE & TRACE
Stack	long array variable providing direct access to CIGAL stack data
State	integer variable showing the current execution status of CIGAL
Sysdir	string variable containing pathname of CIGAL system directory
Tablet	integer variable controlling digitizing tablet settings
Tabs	integer variable specifying spacing of tab stops
Tflags
Tlo
Thi
Unit	integer variable controlling current active display device
Vanish	integer variable specifying graphics 3-D vanishing point
Vdata	matrix of lengths and areas computed by SKETCH command
Vdatfil	string specifying the name of the tempfile for VDATA values
Vec0	long variable specifying current first graphics vetor
Vecfil	string specifying the name of the temporary file for vectors
Vecs	list of vectors comprising active vector graphics data
Version	real variable containing current CIGAL version number
Vimage	pointer to variable to receive X& Y graphics data
Vmode	integer variable controlling the video display mode
Vpage	integer variable indicating active lines left in video page
Vplane	integer variable specifying video memory to use for output
Vwindow	integer variable controlling which screen window to use
Wactive	integer variable specifying active WATCH variables
Wdevice	pointer to variable used for specifying graphics line width
Wflags	integer variable controlling the use of split screen windows
Windows	matrix variables controlling the current display windows
Wrthdr	string variable containing text to write to data file header
Year	integer pseudo-variable containing the current year
YZimage	pointer to variable to receive X-Z or Y-Z graphics data
Zdevice	pointer to variable used for specifying cursor Z value
Zfact
Zimage	pointer to variable to receive Z value graphics data
Zoff
Zvalue	integer variable specifying cursor Z value
Adc0	Pseudo-variable for reading analog to digital converter
Dac0	Pseudo-variable controlling digital to analog converter
Motor1	Pseudo-variable controlling peripheral motor device
Sw1	Pseudo-variable controlling peripheral switching device

See Also:
Configure, Start-up

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