lef56_01.lef.ref

openaccess读def,lef文件所用的源代码

VERSION 5.6 ;
NAMESCASESENSITIVE ON ;
BUSBITCHARS "[]" ;
DIVIDERCHAR ":" ;

PROPERTYDEFINITIONS
  LIBRARY NAME STRING "Cadence96" ;
  LIBRARY librealrangeprop REAL RANGE 21.1 51.1 25.1 ;
  LIBRARY libintrangeprop INTEGER RANGE 20 50 30 ;
  LIBRARY librealprop REAL 21.22 ;
  LIBRARY libintprop INTEGER 20 ;
  LAYER lsp STRING ;
  LAYER lip INTEGER ;
  LAYER lrp REAL ;
  LAYER liprange INTEGER RANGE 1 100 ;
  LAYER lrprange REAL RANGE 1.1 100.1 ;
  VIA viasp STRING ;
  VIA viarrangep REAL RANGE 1.1 100.1 ;
  VIA COUNT INTEGER RANGE 1 100 ;
  VIA viarp REAL ;
  VIA viaip INTEGER ;
  VIARULE vrsp STRING ;
  VIARULE vrrrp REAL RANGE 1.1 100.1 ;
  VIARULE vrirp INTEGER RANGE 1 100 ;
  VIARULE vrrp REAL ;
  VIARULE vrip INTEGER ;
  NONDEFAULTRULE ndrsp STRING ;
  NONDEFAULTRULE ndrfrp REAL RANGE 1.1 100.1 ;
  NONDEFAULTRULE ndrirp INTEGER RANGE 1 100 ;
  NONDEFAULTRULE ndrrp REAL ;
  NONDEFAULTRULE ndrip INTEGER ;
  MACRO stringprop STRING ;
  MACRO intrangeprop INTEGER RANGE 1 100 ;
  MACRO WEIGHT REAL RANGE 1.1 100.1 ;
  MACRO realprop REAL ;
  MACRO integerprop INTEGER ;
END PROPERTYDEFINITIONS

UNITS
  TIME NANOSECONDS 100 ;
  CAPACITANCE PICOFARADS 10 ;
  FREQUENCY MEGAHERTZ 10 ;
END UNITS
CLEARANCEMEASURE MAXXY ;
ANTENNAINPUTGATEAREA 45 ;
ANTENNAOUTPUTDIFFAREA 55 ;
ANTENNAINOUTDIFFAREA 65 ;
LAYER POLYS
  TYPE MASTERSLICE ;
  PROPERTY lsp "top\ntop" ;
  PROPERTY lip 1 ;
  PROPERTY lrp 2 ;
  PROPERTY liprange 3 ;
  PROPERTY lrprange 3.5 ;
END POLYS

LAYER CONT
  TYPE CUT ;
  SPACING 0.2 ;
  SPACING 0.1 CENTERTOCENTER ;
  SPACING 0.22 ADJACENTCUTS 3 WITHIN 0.25 ;
  RESISTANCE 0.1 ;
  ANTENNAMODEL OXIDE1 ;
    ANTENNAAREARATIO 1 ;
    ANTENNADIFFAREARATIO 2 ;
    ANTENNACUMAREARATIO 10 ;
    ANTENNACUMDIFFAREARATIO PWL ( ( 2 20 ) ( 3 30 ) ) ;
  ACCURRENTDENSITY PEAK
    FREQUENCY 1e+006 1e+008 ;
    TABLEENTRIES 5e-007 4e-007 ;
  ACCURRENTDENSITY AVERAGE
    FREQUENCY 1e+006 1e+008 ;
    TABLEENTRIES 6e-007 5e-007 ;
  ACCURRENTDENSITY RMS
    FREQUENCY 1e+008 8e+008 ;
    TABLEENTRIES 5e-007 4e-007 ;
  DCCURRENTDENSITY AVERAGE
    CUTAREA 2.1 5.1 ;
    TABLEENTRIES 5e-007 4e-007 ;
  PROPERTY lsp "top" ;
  PROPERTY lip 1 ;
  PROPERTY lrp 2.3 ;
  PROPERTY liprange 2 ;
  PROPERTY lrprange 3.1 ;
END CONT

LAYER M1
  TYPE ROUTING ;
  DIRECTION HORIZONTAL ;
  PITCH 1.8 1.6 ;
  WIDTH 0.05 ;
  OFFSET 0 0 ;
  AREA 34.1 ;
  SPACINGTABLE
    PARALLELRUNLENGTH 0 1 
    WIDTH 0 0.18 0.22 
    WIDTH 0.29 0.18 0.22 
    WIDTH 9.99 0.6 0.6 ;
  SPACING 0.32 RANGE 1.01 1000 INFLUENCE 1.01 ;
  SPACING 0.6 RANGE 4.5 1000 INFLUENCE 3.81 ;
  WIREEXTENSION 0.75 ;
  MINIMUMCUT 4 WIDTH 2.2 FROMBELOW ;
  MINIMUMCUT 2 WIDTH 5 ;
  MINIMUMCUT 4 WIDTH 2.4 FROMABOVE ;
  MINIMUMCUT 2 WIDTH 1 LENGTH 1 WITHIN 5 ;
  MINWIDTH 0.9 ;
  MAXWIDTH 10.1 ;
  MINSTEP 0.2 OUTSIDECORNER ;
  MINSTEP 0.3 INSIDECORNER ;
  MINSTEP 0.1 STEP ;
  PROTRUSIONWIDTH 0.28 LENGTH 0.6 WIDTH 1.2 ;
  MINENCLOSEDAREA 0.3 ;
  MINENCLOSEDAREA 0.4 WIDTH 0.15 ;
  MINSIZE 0.1 0.2 0.2 0.3 ;
  DIAGPITCH 1.6 1.8 ;
  DIAGWIDTH 0.08 ;
  DIAGSPACING 0.33 ;
  DIAGMINEDGELENGTH 0.4 ;
  RESISTANCE RPERSQ 0.103 ;
  CAPACITANCE CPERSQDIST 0.000156 ;
  HEIGHT 9.1 ;
  THICKNESS 1.1 ;
  SHRINKAGE 0.1 ;
  CAPMULTIPLIER 1 ;
  EDGECAPACITANCE 5e-005 ;
  MINIMUMDENSITY 20.2 ;
  MAXIMUMDENSITY 80.1 ;
  DENSITYCHECKWINDOW 200.1 200.1 ;
  DENSITYCHECKSTEP 100.05 ;
  FILLACTIVESPACING 3.1 ;
  ANTENNAMODEL OXIDE1 ;
    ANTENNAAREARATIO 1 ;
    ANTENNADIFFAREARATIO 2 ;
    ANTENNACUMAREARATIO 100 ;
    ANTENNACUMDIFFAREARATIO PWL ( ( 1 100 ) ( 2 200 ) ) ;
  ANTENNAMODEL OXIDE2 ;
    ANTENNASIDEAREARATIO 50 ;
    ANTENNADIFFSIDEAREARATIO 60 ;
    ANTENNACUMSIDEAREARATIO 300 ;
    ANTENNACUMDIFFSIDEAREARATIO PWL ( ( 1 100 ) ( 2 200 ) ) ;
  ANTENNAMODEL OXIDE3 ;
    ANTENNAAREARATIO 1 ;
    ANTENNADIFFAREARATIO 2 ;
  ANTENNAMODEL OXIDE4 ;
    ANTENNAAREARATIO 1 ;
    ANTENNADIFFAREARATIO 2 ;
  ACCURRENTDENSITY PEAK
    FREQUENCY 1e+006 1e+008 ;
    TABLEENTRIES 7e-007 6e-007 ;
  ACCURRENTDENSITY AVERAGE
    FREQUENCY 1e+006 1e+008 ;
    TABLEENTRIES 6e-007 5e-007 ;
  ACCURRENTDENSITY RMS
    FREQUENCY 1e+006 1e+008 ;
    TABLEENTRIES 5e-007 4e-007 ;
  DCCURRENTDENSITY AVERAGE
    WIDTH 20.1 50.1 ;
    TABLEENTRIES 6e-007 5e-007 ;
  PROPERTY lsp "top" ;
  PROPERTY lip 1 ;
  PROPERTY lrp 2.3 ;
  PROPERTY liprange 2 ;
  PROPERTY lrprange 3 ;
END M1

LAYER CUT12
  TYPE CUT ;
  SPACING 0.15 CENTERTOCENTER ;
  SPACING 0.7 LAYER CONT ;
  WIDTH 0.2 ;
  ENCLOSURE BELOW 0.03 0.01 ;
  ENCLOSURE ABOVE 0.05 0.01 ;
  PREFERENCLOSURE BELOW 0.06 0.01 ;
  PREFERENCLOSURE ABOVE 0.08 0.02 ;
  RESISTANCE 10 ;
  ANTENNAMODEL OXIDE1 ;
    ANTENNAAREARATIO 1 ;
    ANTENNADIFFAREARATIO PWL ( ( 2 2 ) ( 3 3 ) ) ;
    ANTENNACUMAREARATIO 10 ;
    ANTENNACUMDIFFAREARATIO PWL ( ( 2 20 ) ( 3 30 ) ) ;
  ACCURRENTDENSITY PEAK 5.6e-006 ;
  ACCURRENTDENSITY AVERAGE 5.5e-006 ;
  ACCURRENTDENSITY RMS 5.4e-006 ;
  DCCURRENTDENSITY AVERAGE 4.5e-007 ;
END CUT12

LAYER M2
  TYPE ROUTING ;
  DIRECTION VERTICAL ;
  PITCH 1.8 1.8 ;
  WIDTH 0.05 ;
  SPACING 0.2 ;
  SPACING 0.22 RANGE 0.31 10 ;
  SPACING 0.65 RANGE 10.01 10000 ;
  MINIMUMCUT 4 WIDTH 2.4 FROMBELOW ;
  MINIMUMCUT 2 WIDTH 5 FROMBELOW ;
  MINIMUMCUT 2 WIDTH 1 FROMBELOW LENGTH 1 WITHIN 5 ;
  MINSTEP 0.2 OUTSIDECORNER LENGTHSUM 3 ;
  MINSTEP 0.3 INSIDECORNER LENGTHSUM 4 ;
  MINSTEP 0.1 STEP LENGTHSUM 2 ;
  MINENCLOSEDAREA 0.4 ;
  DIAGPITCH 1.6 1.6 ;
  MAXIMUMDENSITY 80.1 ;
  DENSITYCHECKWINDOW 200.1 200.1 ;
  DENSITYCHECKSTEP 100.05 ;
  ANTENNAMODEL OXIDE1 ;
    ANTENNAAREARATIO 10 ;
    ANTENNADIFFAREARATIO PWL ( ( 1 10 ) ( 2 20 ) ) ;
    ANTENNACUMAREARATIO 100 ;
    ANTENNACUMDIFFAREARATIO PWL ( ( 1 100 ) ( 2 200 ) ) ;
  ANTENNAMODEL OXIDE2 ;
    ANTENNASIDEAREARATIO 20 ;
    ANTENNADIFFSIDEAREARATIO PWL ( ( 3 30 ) ( 4 40 ) ) ;
    ANTENNACUMSIDEAREARATIO 300 ;
    ANTENNACUMDIFFSIDEAREARATIO PWL ( ( 1 100 ) ( 2 200 ) ) ;
  ACCURRENTDENSITY PEAK 5.3e-006 ;
  ACCURRENTDENSITY AVERAGE 5.4e-006 ;
  ACCURRENTDENSITY RMS 5.5e-006 ;
  DCCURRENTDENSITY AVERAGE 4.5e-007 ;
END M2

LAYER CUT23
  TYPE CUT ;
  SPACING 0.15 ;
  WIDTH 0.2 ;
  ENCLOSURE BELOW 0.05 0.01 ;
  ENCLOSURE BELOW 0.02 0.02 WIDTH 1 ;
  ENCLOSURE BELOW 0.05 0.05 WIDTH 2 ;
  ENCLOSURE ABOVE 0.05 0.01 ;
  ENCLOSURE ABOVE 0.02 0.02 WIDTH 1 ;
  ENCLOSURE ABOVE 0.05 0.05 WIDTH 2 ;
  PREFERENCLOSURE BELOW 0.09 0.09 ;
  PREFERENCLOSURE BELOW 0.04 0.04 WIDTH 2 ;
  PREFERENCLOSURE BELOW 0.07 0.07 WIDTH 4 ;
  PREFERENCLOSURE ABOVE 0.09 0.09 ;
  PREFERENCLOSURE ABOVE 0.04 0.04 WIDTH 2 ;
  PREFERENCLOSURE ABOVE 0.07 0.07 WIDTH 4 ;
  RESISTANCE 10 ;
  ANTENNAMODEL OXIDE1 ;
    ANTENNACUMAREARATIO 10 ;
    ANTENNACUMDIFFAREARATIO PWL ( ( 2 20 ) ( 3 30 ) ) ;
  ACCURRENTDENSITY RMS
    FREQUENCY 1e+008 4e+008 8e+008 ;
    CUTAREA 0.4 0.8 10.1 50.1 100.1 ;
    TABLEENTRIES
       2e-006 1.9e-006 1.8e-006 1.7e-006 1.5e-006
       1.4e-006 1.3e-006 1.2e-006 1.1e-006 1e-006
       9e-007 8e-007 7e-007 6e-007 4e-007 ;
END CUT23

LAYER M3
  TYPE ROUTING ;
  DIRECTION DIAG45 ;
  PITCH 1.8 1.8 ;
  WIDTH 1 ;
  SPACINGTABLE
    PARALLELRUNLENGTH 0 0.5 3 5 
    WIDTH 0 0.15 0.15 0.15 0.15 
    WIDTH 0.25 0.15 0.2 0.2 0.2 
    WIDTH 1.5 0.15 0.5 0.5 0.5 
    WIDTH 3 0.15 0.5 1 1 
    WIDTH 5 0.15 0.5 1 2 ;
  SPACINGTABLE INFLUENCE
    WIDTH 1.5 WITHIN 0.5 SPACING 0.5
    WIDTH 3 WITHIN 1 SPACING 1
    WIDTH 5 WITHIN 2 SPACING 2 ;
  ANTENNAMODEL OXIDE1 ;
    ANTENNACUMAREARATIO 100 ;
    ANTENNACUMDIFFAREARATIO PWL ( ( 1 100 ) ( 2 200 ) ) ;
  ANTENNAMODEL OXIDE2 ;
    ANTENNACUMSIDEAREARATIO 300 ;
    ANTENNACUMDIFFSIDEAREARATIO PWL ( ( 1 100 ) ( 2 200 ) ) ;
  ACCURRENTDENSITY RMS
    FREQUENCY 1e+008 4e+008 8e+008 ;
    WIDTH 0.4 0.8 10.1 50.1 100.1 ;
    TABLEENTRIES
       2e-006 1.9e-006 1.8e-006 1.7e-006 1.5e-006
       1.4e-006 1.3e-006 1.2e-006 1.1e-006 1e-006
       9e-007 8e-007 7e-007 6e-007 4e-007 ;
END M3

LAYER CUT34
  TYPE CUT ;
  WIDTH 0.25 ;
  ENCLOSURE BELOW 0.05 0.01 ;
  ENCLOSURE BELOW 0.07 0.07 WIDTH 1 ;
  ENCLOSURE ABOVE 0.05 0.01 ;
  ENCLOSURE ABOVE 0.09 0.09 WIDTH 1 ;
  RESISTANCE 8 ;
  ANTENNAMODEL OXIDE1 ;
    ANTENNACUMAREARATIO 10 ;
    ANTENNACUMDIFFAREARATIO PWL ( ( 2 20 ) ( 3 30 ) ) ;
END CUT34

LAYER M4
  TYPE ROUTING ;
  DIRECTION DIAG135 ;
  PITCH 1.8 1.8 ;
  WIDTH 1 ;
  ANTENNAMODEL OXIDE1 ;
    ANTENNACUMAREARATIO 100 ;
    ANTENNACUMDIFFAREARATIO PWL ( ( 1 100 ) ( 2 200 ) ) ;
  ANTENNAMODEL OXIDE2 ;
    ANTENNACUMSIDEAREARATIO 300 ;
    ANTENNACUMDIFFSIDEAREARATIO PWL ( ( 1 100 ) ( 2 200 ) ) ;
END M4

LAYER IMPLANT1
  TYPE IMPLANT ;
  WIDTH 0.5 ;
  SPACING 0.5 ;
END IMPLANT1

LAYER IMPLANT2
  TYPE IMPLANT ;
  WIDTH 0.5 ;
  SPACING 0.5 ;
END IMPLANT2

LAYER OVERLAP
  TYPE OVERLAP ;
END OVERLAP

MAXVIASTACK 3 RANGE POLYS M3 ;
VIA POLYS_M1 DEFAULT
  LAYER POLYS ;
    RECT -0.6 -0.6 0.6 0.6 ;
  LAYER CONT ;
    RECT -0.25 -0.25 0.25 0.25 ;
  LAYER M1 ;
    RECT -0.6 -0.6 0.6 0.6 ;
  RESISTANCE 1 ;
END POLYS_M1

VIA M1_M2 DEFAULT
  LAYER M1 ;
    RECT -0.6 -0.6 0.6 0.6 ;
  LAYER CUT12 ;
    RECT -0.45 -0.45 0.45 0.45 ;
  LAYER M2 ;
    RECT -0.45 -0.45 0.45 0.45 ;
  RESISTANCE 1.5 ;
  PROPERTY viasp "DEFAULT" ;
  PROPERTY viarrangep 1.99 ;
  PROPERTY COUNT 34 ;
  PROPERTY viarp 1.1 ;
  PROPERTY viaip 1 ;
END M1_M2

VIA M2_M3 DEFAULT
  LAYER M2 ;
    RECT -0.45 -0.9 0.45 0.9 ;
  LAYER CUT23 ;
    RECT -0.45 -0.45 0.45 0.45 ;
  LAYER M3 ;
    RECT -0.45 -0.45 0.45 0.45 ;
  RESISTANCE 1.5 ;
END M2_M3

VIA M2_M3_PWR
  LAYER M2 ;
    POLYGON -1.35 -1.35 -1.35 1.35 0.7 1.35 0.7 0.7 1.35 0.7 1.35 -1.35 ;
  LAYER CUT23 ;
    RECT -1.35 -1.35 -0.45 1.35 ;
    RECT 0.45 -1.35 1.35 -0.45 ;
    RECT 0.45 0.45 1.35 1.35 ;
  LAYER M3 ;
    POLYGON -1.35 -1.35 -1.35 1.35 0.7 1.35 0.7 0.7 1.35 0.7 1.35 -1.35 ;
  RESISTANCE 0.4 ;
END M2_M3_PWR

VIA VIACENTER12
  LAYER M1 ;
    RECT -4.6 -2.2 4.6 2.2 ;
  LAYER CUT12 ;
    RECT -3.1 -0.8 -1.9 0.8 ;
    RECT 1.9 -0.8 3.1 0.8 ;
  LAYER M2 ;
    RECT -4.4 -2.1 4.4 2.1 ;
  RESISTANCE 0.24 ;
END VIACENTER12

VIA ndVIA01
  LAYER POLYS ;
    RECT -3 -3 3 3 ;
  LAYER CONT ;
    RECT -1.1 -1.1 1.1 1.1 ;
  LAYER M1 ;
    RECT -3 -3 3 3 ;
  RESISTANCE 0.2 ;
END ndVIA01

VIA ndVIA12
  LAYER M1 ;
    RECT -3 -3 3 3 ;
  LAYER CUT12 ;
    RECT -1.1 -1.1 1.1 1.1 ;
  LAYER M2 ;
    RECT -3 -3 3 3 ;
  RESISTANCE 0.2 ;
  PROPERTY viasp "NONDEFAULT" ;
  PROPERTY viarrangep 1.99 ;
  PROPERTY COUNT 34 ;
  PROPERTY viarp 1.1 ;
  PROPERTY viaip 1 ;
END ndVIA12

VIA ndVIA23
  LAYER M2 ;
    RECT -2.2 -2.2 2.2 2.2 ;
  LAYER CUT23 ;
    RECT -0.8 -0.8 0.8 0.8 ;
  LAYER M3 ;
    RECT -2.1 -2.1 2.1 2.1 ;
END ndVIA23

VIARULE M2_M3_rule
  LAYER M2 ;
    DIRECTION VERTICAL ;
    WIDTH 9.1 TO 9.6 ;
  LAYER M3 ;
    DIRECTION HORIZONTAL ;
    WIDTH 3.1 TO 3.1 ;
  VIA M2_M3 ;
END M2_M3_rule

VIARULE VIACENTER12_rule
  LAYER M1 ;
    DIRECTION HORIZONTAL ;
    WIDTH 9.1 TO 9.6 ;
  LAYER M2 ;
    DIRECTION VERTICAL ;
    WIDTH 3.1 TO 3.1 ;
  VIA VIACENTER12 ;
END VIACENTER12_rule

VIARULE VIAGEN12 GENERATE DEFAULT
  LAYER M1 ;
    WIDTH 0.1 TO 19 ;
    ENCLOSURE 1.4 1.4 ;
  LAYER M2 ;
    WIDTH 0.1 TO 19 ;
    ENCLOSURE 1.4 1.4 ;
  LAYER CUT12 ;
    RECT -0.8 -0.8 0.8 0.8 ;
    SPACING 5.6 BY 6.1 ;
    RESISTANCE 0.200000 ;
END VIAGEN12

VIARULE VIAGEN12B GENERATE
  LAYER M1 ;
    WIDTH 0.4 TO 10 ;
    ENCLOSURE 1.4 1.4 ;
  LAYER M2 ;
    WIDTH 0.4 TO 10 ;
    ENCLOSURE 1.4 1.4 ;
  LAYER CUT12 ;
    RECT -0.8 -0.8 0.8 0.8 ;
    SPACING 5.6 BY 6.1 ;
    RESISTANCE 0.200000 ;
END VIAGEN12B

VIARULE M1_M2_rule GENERATE
  LAYER M1 ;
    ENCLOSURE 1 1 ;
  LAYER M2 ;
    ENCLOSURE 1 1 ;
  LAYER CUT12 ;
    RECT -0.8 -0.8 0.8 0.8 ;
    SPACING 5.6 BY 6.1 ;
END M1_M2_rule

VIARULE VIAGEN23 GENERATE DEFAULT
  LAYER M2 ;
    WIDTH 0.2 TO 100.1 ;
    ENCLOSURE 0.1 0.01 ;
  LAYER M3 ;
    WIDTH 0.2 TO 100.1 ;
    ENCLOSURE 0.1 0.01 ;
  LAYER CUT23 ;
    RECT -0.8 -0.8 0.8 0.8 ;
    SPACING 5.6 BY 6.1 ;
    RESISTANCE 0.200000 ;
END VIAGEN23

VIARULE VIAGEN23B GENERATE
  LAYER M2 ;
    ENCLOSURE 1 1 ;
  LAYER M3 ;
    ENCLOSURE 1 1 ;
  LAYER CUT23 ;
    RECT -0.8 -0.8 0.8 0.8 ;
    SPACING 5.6 BY 6.1 ;
END VIAGEN23B

SPACING
  SAMENET M1 M1 3.5 ;
  SAMENET M2 M2 3.5 ;
  SAMENET CONT CUT12 1.5 ;
  SAMENET CUT12 CUT23 1.5 STACK ;
END SPACING

NONDEFAULTRULE RULE1
  LAYER M1
    WIDTH 10.1 ;
    DIAGWIDTH 10.1 ;
    SPACING 2.2 ;
    WIREEXTENSION 6 ;
  END M1
  LAYER M2
    WIDTH 10.1 ;
    SPACING 2.2 ;
  END M2
  LAYER M3
    WIDTH 11.1 ;
    SPACING 3.2 ;
  END M3
  USEVIA ndVIA23 ;
  USEVIA ndVIA12 ;
  USEVIA ndVIA01 ;
  USEVIARULE VIAGEN23B ;
  MINCUTS CONT 2 ;
  MINCUTS CUT23 1 ;
  PROPERTY ndrsp "single" ;
  PROPERTY ndrfrp 3.5 ;
  PROPERTY ndrirp 2 ;
  PROPERTY ndrrp 6.7 ;
  PROPERTY ndrip 1 ;
END RULE1
NONDEFAULTRULE NOVIA
  LAYER M1
    WIDTH 10.1 ;
    SPACING 2.2 ;
  END M1
  LAYER M2
    WIDTH 10.1 ;
    SPACING 2.2 ;
  END M2
  LAYER M3
    WIDTH 11.1 ;
    SPACING 3.2 ;
  END M3
  USEVIA POLYS_M1 ;
  USEVIA M1_M2 ;
  USEVIA M2_M3 ;
  USEVIARULE VIAGEN12 ;
  USEVIARULE VIAGEN23 ;
END NOVIA
SITE COVER
  CLASS PAD ;
  SIZE 10.1 BY 10.1 ;
END COVER

SITE IO
  CLASS PAD ;
  SIZE 80.1 BY 560.1 ;
END IO