docs/wiki/geda-example_usbjtag.html

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  16
  17 <h1 class="sectionedit1" id="example_usb-based_jtag_interface">Example USB-based JTAG interface</h1>
  18 <div class="level1">
  19
  20 <p>
  21 Example of a USB-based JTAG interface in the:<br/>
  22
  23 <strong><code>${prefix}/share/doc/geda-gaf/examples/gTAG</code></strong><br/>
  24
  25 directory, where <code>${prefix}</code> is the installation prefix for gEDA on your
  26 system (usually <strong><code>/usr</code></strong> or <strong><code>/usr/local</code></strong>).
  27 </p>
  28 <pre class="code">              gTAG -  USB to JTAG interface
  29                 ============================
  30
  31 This is the README file for the schematic of gTAG.
  32
  33 Short description
  34 -----------------
  35 gTAG is an interface to connect your USB port of computer to talk
  36 to your circuits which talks JTAG.
  37
  38 Copyright
  39 ---------
  40 These schematics is (C) by Stefan Petersen (spe@stacken.kth.se) and
  41 released under GPL (see the attached file COPYING). GPL is mainly
  42 written for software, ie intellectual property in electronic form.
  43 By making this schematic an intellectual property in electronic
  44 form gTAG schematics can be covered by GPL.
  45
  46 How?
  47 ----
  48 These schematics are made with gschem and netlists are then generated
  49 with gnetlist. Both gschem and gnetlist are part of gEDA
  50 (http://www.geda-project.org).
  51
  52 Files
  53 -----
  54 The distribution of the schematics of gTAG should consist of:
  55 * README - this file.
  56 * COPYING - GPL copyright notice.
  57 * crdist.sh - shell script used to generate the tar.gz.
  58 * ChangeLog - tries to scribble down what has changed between versions.
  59 * Four component symbols:
  60   - 7414-1.sym - Original 7414 from gschem without power attributes.
  61   - max882.sym - 5-to-3.3 V converter.
  62   - cy7c64603-52nc.sym - USB microcontroller from Cypress.
  63   - sn75240pw.sym - Surge supressor for USB
  64   - copyleft.sym - Symbol with GPL text for all schematics.
  65 * Five schematics with four symbols:
  66   - gTAG.sch.sch - Toplevel schematic for gTAG
  67   - gTAG-jtagio.[sym/sch]
  68   - gTAG-ucont.[sym/sch]
  69   - gTAG-consio.[sym/sch]
  70   - gTAG-psu.[sym/sch]
  71 * gEDA rc-files for this project:
  72   - commonrc - contains common declarations for both gschem and gnetlist
  73   - gnetlistrc - gnetlist specific and and calls commonrc
  74   - gschemrc   - gschem specific and and calls commonrc</pre>
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