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  28 <h1><a name="gschem2pcb_readme" id="gschem2pcb_readme">gschem2pcb README</a></h1>
  29 <div class="level1">
  30 <pre class="code">------------------------------------------------------------------
  31 JM Routoure. routoure@greyc.ismra.fr
  32 17/01/2000
  33
  34 I would like to thank Stefan Petersen for debuging the scheme program.
  35
  36 -------------------------------------------------------------------
  37
  38
  39 This document describes how to install (section I) and use (section II) the
  40 gschem2pcb package. Section III describes some of the footprints
  41 available in pcb
  42
  43 The purpose of this package is to interface gschem with pcb. It uses a scheme
  44 program and a script.
  45
  46
  47 Section I : Installation.
  48
  49 1. Untar the gschem2pcb.tar. You must obtain 3 files gschem2pcb.sh,
  50 GNET-PCBboard.scm and the README file.
  51
  52 2. Move gschem2pcb.sh in a directory which is in your PATH (/usr/local/bin for
  53 instance ). Be sure that gschem2pcb.sh can be executed (chmod 755 gschem2pcb.sh)
  54
  55 3. Move GNET-PCBboard.scm in the share directory of your gEDA distribution.
  56 Normally, it should be /usr/local/share/gEDA/scheme.
  57
  58 4. Modify the common.m4 file of the pcb program (should be found in
  59 /usr/X11R6/lib/X11/pcb/m4/) like this : the include keywords at the end of the
  60 file  must be replace by
  61
  62 include(/usr/X11R6/lib/X11/pcb/m4/connector.inc)
  63 include(/usr/X11R6/lib/X11/pcb/m4/dil.inc)
  64 include(/usr/X11R6/lib/X11/pcb/m4/misc.inc)
  65 include(/usr/X11R6/lib/X11/pcb/m4/plcc.inc)
  66 include(/usr/X11R6/lib/X11/pcb/m4/to.inc)
  67 include(/usr/X11R6/lib/X11/pcb/m4/qfp.inc)
  68
  69 5. Edit the ~/.gEDA/gschemrc file and be sure that the following line exists :
  70 (attribute-name &quot;footprint&quot;)
  71
  72
  73 6. Be sure that grep, sed and gawk are installed. That&#039;s all..
  74
  75
  76 Section II : using gschem2pcb.
  77
  78 1. With gschem, create a schematic. All the device you want to have in pcb must
  79 have a Uref attribute. The footprint that you want to use in pcb are indicated
  80 by the footprint attribute (see section III for the description of the footprint
  81 in pcb)
  82
  83 Be careful that the attributes Uref, name, value and device must not contain
  84 space char.
  85 --------------------------------------------------------
  86
  87 2. Save your work (ultralownoise.sch for instance -ambitious design!) and type in a shell
  88
  89         gschem2pcb.sh ultralownoise.sch.
  90
  91 note : the gschem file must end by .sch
  92
  93 Error messages will appear if some space characters are found in the
  94 attributes Uref, name, value and device and if the name of the footprint was not
  95 found. Warning, pcb files are created even if errors occur!
  96
  97 - if  ultralownoise.pcb does not exist, it will be created. A netlist file
  98 ultralownoise.net will also be created. In pcb, load the pcb (load layout). All
  99 the footprints will appears at the top-left corner of the windows. Load the
 100 netlist (load netlist file) and type the key &quot;w&quot;. Place the footprints and type
 101 &quot;o&quot; to optimize the rastnet. See the pcb documentation for details.
 102
 103 - if  ultralownoise.pcb exists, a ultralownoise.new.pcb file should be
 104 created. It should contain only the new device that have been added in the
 105 schematic since the last save of the ultralownoise.pcb file. Use &quot;load layout
 106 data to paste buffer&quot; to include the new footprints in the pcb file. The nestlist
 107 file is also updated so read it again.
 108
 109
 110 Section III. Description of the name of the footprint in pcb.
 111 pcb uses macro to define the footprints. For DIL packages, for instance, 2
 112 arguments are used to indicate the number of pins and the width in mil of the
 113 footprint. In gschem the footprint attribute of a 300 mil width and 8 pins DIL
 114 is:
 115 DIL 8 300.
 116 Warning, for that attribute, you have to included the space char!
 117
 118 In the following. I describe the footprint attribute that are to be used in
 119 gschem for the footprint avalaible in pcb. N stands
 120 for the number of pins, W the width in mil, L the length in mil and D the
 121 diameter in mil
 122 CONNECTOR ROWS COLS     # single connector
 123 DIN41_651LAY N          # DIN 41.651 laying
 124 DIN41_651STAND N        # DIN 41.651 standing
 125 SUBD_LAY_BASE N         # SUB-D connector laying
 126 SUBD_MALE_LAY_BASE N    # SUB-D connector male laying
 127 SUBD_FEMALE_LAY_BASE N  # SUB-D connector female laying
 128 DIL N W                 # dual-inline standard
 129 D N                     # dual inline with W=244
 130 DW N                    # dual inline with W=419
 131 SD N                    # SD (ZIP)
 132 MULTIWATT15             # 15 pins multiwatt footprint
 133 R025                    # standard 1/4W resistor !now attributes
 134 SIL N                   # SIL
 135 CSIL                    # SIL package with a common pin
 136 QFP132                  # QFP132 flat pack
 137 LED D                   # standing LED
 138 DIODE_LAY L             # laying diode
 139 AXIAL_LAY L             # standard axial footprint
 140 CRYSTAL W               # crystal package
 141 OSC                     # a can oscillator
 142 ISA8                    # 8 bit ISA Slot card
 143 OVEN_OSC                # ovenized-oscillator package
 144 RADIAL_CAN W            # a radial capcitor package
 145 PLCC N                  # pllc
 146 PLCC N add              # pllc with additionnal border add
 147 QFP N add               # qfp   with additionnal border add
 148 No additional parameters for the to footprints
 149 TO3_90
 150 TO3_45
 151 TO5
 152 TO92
 153 TO126
 154 TO126LAY-WIDE
 155 TO126STAND-WIDE
 156 TO220
 157 TO220LAY-WIDE
 158 TO220STAND
 159 TO220STAND-WIDE
 160
 161 </pre>
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