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<html>
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<head>
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<meta http-equiv="Content-Language" content="en-ca">
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<meta name="GENERATOR" content="Microsoft FrontPage 5.0">
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<meta name="ProgId" content="FrontPage.Editor.Document">
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<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
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<title>rtfTextController</title>
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<!--mstheme--><link rel="stylesheet" href="wate1011.css">
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<meta name="Microsoft Theme" content="water 1011, default">
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</head>
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<body>
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<p><font size="6">rtfTextController3</font></p>
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<h2> </h2>
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<h2><font size="5">Description</font></h2>
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<p><font size="4">This is a text mode video display controller that supports
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color. The controller uses several internal
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dual ported r/w memories to store text, text attributes and character bitmaps. The display memory is
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thirty-two bits wide of which only twenty seven bits are implemented, allowing 512 different
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simultaneous characters to be displayed along with 512 background and foreground
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colors. The use of internal dual ported memories means that the text
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controller does not consume any memory bandwidth from the processor.</font></p>
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<p><font size="4">The address decodes for the text screen and attribute memory,
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character bitmap memory and register set area are all parameterized to allow a
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different address mapping.</font></p>
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<table border="1" cellpadding="0" cellspacing="0" width="91%" style="border-left: 1.5pt solid black; border-right: 1.5pt solid black; border-top: 1.5pt solid black; border-bottom: .75pt solid black; background-color: white" fpstyle="27,011111100">
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<tr>
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<td width="15%" style="font-weight: bold; color: white; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: 1.5pt solid black; background-color: gray">
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Address</td>
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<td width="85%" style="font-weight: bold; color: white; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: 1.5pt solid black; background-color: gray">
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Description</td>
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</tr>
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<tr>
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<td width="15%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
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$FFD0_xxxx</td>
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<td width="85%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
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text screen and attribute memory area, currently the controller only supports a 4kx27 memory</td>
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</tr>
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<tr>
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<td width="15%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
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$FFD2_xxxx</td>
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<td width="85%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
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character bitmap memory, currently the controller only supports a 4k memory,
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which allows 512 8x8 character bitmaps.</td>
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</tr>
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<tr>
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<td width="15%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
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$FFDA_00xx</td>
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<td width="85%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
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text controller register area</td>
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</tr>
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<tr>
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<td width="15%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white"> </td>
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<td width="85%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white"> </td>
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</tr>
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</table>
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<p style="margin-bottom: 0">Text and Attribute Memory Layout</p>
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<table border="1" cellpadding="0" cellspacing="0" width="34%" style="border-left: 1.5pt solid black; border-right: 1.5pt solid black; border-top: 1.5pt solid black; border-bottom: .75pt solid black; background-color: white" fpstyle="27,011111100">
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<tr>
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<td width="21%" align="center" style="font-weight: bold; color: white; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: 1.5pt solid black; background-color: gray">
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31 28</td>
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<td width="25%" align="center" style="font-weight: bold; color: white; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: 1.5pt solid black; background-color: gray">
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27 19</td>
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<td width="25%" align="center" style="font-weight: bold; color: white; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: 1.5pt solid black; background-color: gray">
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18 10</td>
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<td width="29%" align="center" style="font-weight: bold; color: white; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: 1.5pt solid black; background-color: gray">
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9
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0</td>
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</tr>
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<tr>
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<td width="21%" align="center" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
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unimp</td>
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<td width="25%" align="center" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
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Bk Color</td>
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<td width="25%" align="center" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
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Fg Color</td>
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<td width="29%" align="center" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
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char code</td>
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</tr>
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</table>
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<p style="margin-bottom: 0">Data written to the unimplemented bits is ignored
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and they will read back as zero.</p>
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<h2 style="margin-bottom: 0">Clocks</h2>
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<p style="margin-bottom: 0">The text video display controller uses two clocks, a
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bus timing clock (clk_i) and a video timing clock (vclk), which can be
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completely independent.</p>
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<p style="margin-bottom: 0">The core synchronizes the display relative to
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externally supplied horizontal and vertical synchronization signals.</p>
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<h2><font face="Arial"><b>Register Description</b></font></h2>
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<table border="1" cellspacing="0" width="90%" style="border-left:1.5pt solid black; border-right:1.5pt solid black; border-top:1.5pt solid black; border-bottom:.75pt solid black; background-color:white" cellpadding="2" fpstyle="27,011111100" height="658">
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<tr>
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<td width="11%" align="center" style="font-weight: bold; color: white; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: 1.5pt solid black; background-color: gray" height="19"><font face="Arial"><b>Reg. No.</b></font></td>
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<td width="20%" style="font-weight: bold; color: white; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: 1.5pt solid black; background-color: gray" align="right" height="19">
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<font face="Arial">31</font><b><font face="Arial">
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0</font></b></td>
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<td width="9%" style="font-weight: bold; color: white; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: 1.5pt solid black; background-color: gray" align="center" height="19">
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<font face="Arial">R/W</font></td>
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<td width="19%" style="font-weight: bold; color: white; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: 1.5pt solid black; background-color: gray" height="19"><font face="Arial"><b>Function</b></font></td>
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<td width="151%" style="font-weight: bold; color: white; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: 1.5pt solid black; background-color: gray" height="19"><font face="Arial"><b>Description</b></font></td>
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</tr>
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<tr>
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<td width="11%" align="center" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="17"><font face="Arial">0</font></td>
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<td width="20%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="right" height="17"><font face="Arial">
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dddddddd
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-------- nnnnnnnn</font></td>
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<td width="9%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="center" height="17">
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<font face="Arial">RW</font></td>
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<td width="19%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="17">
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<font face="Arial">number of columns</font></td>
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<td width="151%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="17">
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<p style="margin-top: 0; margin-bottom: 0">nnn = number of columns</p>
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<p style="margin-top: 0; margin-bottom: 0">ddd = character output delay
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(default 3).</td>
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</tr>
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<tr>
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<td width="11%" align="center" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="17"><font face="Arial">1</font></td>
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<td width="20%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="right" height="17"><font face="Arial">-------- nnnnnnnn</font></td>
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<td width="9%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="center" height="17">
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<font face="Arial">RW</font></td>
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<td width="19%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="17">
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<font face="Arial">number of row</font></td>
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<td width="151%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="17"></td>
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</tr>
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<tr>
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<td width="11%" align="center" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="35"><font face="Arial">2</font></td>
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<td width="20%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="right" height="35">
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<font face="Arial">---- nnnnnnnnnnnn</font></td>
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<td width="9%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="center" height="35">
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<font face="Arial">W</font></td>
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<td width="19%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="35">
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<font face="Arial">window left</font></td>
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<td width="151%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="35">
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<font face="Arial">Text window position- pixels before the display starts, referenced to the
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hsync signal</font></td>
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</tr>
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<tr>
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<td width="11%" align="center" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="35"><font face="Arial">3</font></td>
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<td width="20%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="right" height="35"><font face="Arial">----
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nnnnnnnnnnnn</font></td>
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<td width="9%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="center" height="35">
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<font face="Arial">W</font></td>
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<td width="19%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="35">
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<font face="Arial">window top</font></td>
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<td width="151%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="35">
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<font face="Arial">Text window position - scan lines down from the top of
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the screen referenced to the vsync signal</font></td>
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</tr>
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<tr>
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<td width="11%" align="center" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="35"><font face="Arial">4</font></td>
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| 160 |
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<td width="20%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="right" height="35">
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<font face="Arial">-------- --- nnnnn</font></td>
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<td width="9%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="center" height="35">
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<font face="Arial">W</font></td>
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<td width="19%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="35">
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<font face="Arial">max scanline</font></td>
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<td width="151%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="35">
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| 167 |
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">maximum scan
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line used to display chars</font></p>
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">default 7.</font></td>
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</tr>
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<tr>
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<td width="11%" align="center" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="53"><font face="Arial">5</font></td>
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| 173 |
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<td width="20%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="right" height="53"><font face="Arial">--------
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hhhh wwww</font></td>
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<td width="9%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="center" height="53">
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<font face="Arial">W</font></td>
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<td width="19%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="53">
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<font face="Arial">pixel size</font></td>
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<td width="151%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="53">
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">pixel size in
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video clocks and scan lines</font></p>
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">default is 1
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(2 video clocks per pixel) and 1 (two video scan lines per pixel).</font></td>
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</tr>
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<tr>
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<td width="11%" align="center" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="53">
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<font face="Arial">7</font></td>
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<td width="20%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="right" height="53">
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|
<font face="Arial">-------n nnnnnnnn</font></td>
|
| 190 |
|
|
<td width="9%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="center" height="53">
|
| 191 |
|
|
<font face="Arial">W</font></td>
|
| 192 |
|
|
<td width="19%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="53">
|
| 193 |
|
|
<font face="Arial">Transparent Color</font></td>
|
| 194 |
|
|
<td width="151%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="53">
|
| 195 |
|
|
<font face="Arial">color value that corresponds to a transparent background
|
| 196 |
|
|
color</font></td>
|
| 197 |
|
|
</tr>
|
| 198 |
|
|
<tr>
|
| 199 |
|
|
<td width="11%" align="center" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="243">
|
| 200 |
|
|
<font face="Arial">8</font></td>
|
| 201 |
|
|
<td width="20%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="right" height="243"><font face="Arial">
|
| 202 |
|
|
-------T TBB sssss</font></td>
|
| 203 |
|
|
<td width="9%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="center" height="243">
|
| 204 |
|
|
<font face="Arial">W</font></td>
|
| 205 |
|
|
<td width="19%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="243">
|
| 206 |
|
|
<font face="Arial">cursor start</font></td>
|
| 207 |
|
|
<td width="151%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="243">
|
| 208 |
|
|
<font face="Arial">sssss=scan line cursor display starts on</font><table border="1" cellpadding="0" cellspacing="0" width="100%" height="93" style="border-left: 1.5pt solid black; border-right: 1.5pt solid black; border-top: 1.5pt solid black; border-bottom: .75pt solid black; background-color: white" fpstyle="27,011111100">
|
| 209 |
|
|
<tr>
|
| 210 |
|
|
<td width="12%" height="17" style="font-weight: bold; color: white; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: 1.5pt solid black; background-color: gray">
|
| 211 |
|
|
TT</td>
|
| 212 |
|
|
<td width="88%" height="17" style="font-weight: bold; color: white; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: 1.5pt solid black; background-color: gray">
|
| 213 |
|
|
= Cursor Type</td>
|
| 214 |
|
|
</tr>
|
| 215 |
|
|
<tr>
|
| 216 |
|
|
<td width="12%" height="18" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 217 |
|
|
00</td>
|
| 218 |
|
|
<td width="88%" height="18" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 219 |
|
|
Box</td>
|
| 220 |
|
|
</tr>
|
| 221 |
|
|
<tr>
|
| 222 |
|
|
<td width="12%" height="18" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 223 |
|
|
01</td>
|
| 224 |
|
|
<td width="88%" height="18" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 225 |
|
|
Line</td>
|
| 226 |
|
|
</tr>
|
| 227 |
|
|
<tr>
|
| 228 |
|
|
<td width="12%" height="18" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 229 |
|
|
10</td>
|
| 230 |
|
|
<td width="88%" height="18" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 231 |
|
|
Underscore</td>
|
| 232 |
|
|
</tr>
|
| 233 |
|
|
<tr>
|
| 234 |
|
|
<td width="12%" height="18" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 235 |
|
|
11</td>
|
| 236 |
|
|
<td width="88%" height="18" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 237 |
|
|
Asterisk</td>
|
| 238 |
|
|
</tr>
|
| 239 |
|
|
</table>
|
| 240 |
|
|
<table border="1" cellpadding="0" cellspacing="0" width="100%" style="border-left: 1.5pt solid black; border-right: 1.5pt solid black; border-top: 1.5pt solid black; border-bottom: .75pt solid black; background-color: white" fpstyle="27,011111100">
|
| 241 |
|
|
<tr>
|
| 242 |
|
|
<td width="11%" style="font-weight: bold; color: white; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: 1.5pt solid black; background-color: gray">
|
| 243 |
|
|
BB</td>
|
| 244 |
|
|
<td width="89%" style="font-weight: bold; color: white; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: 1.5pt solid black; background-color: gray">
|
| 245 |
|
|
= Cursor Blink Rate</td>
|
| 246 |
|
|
</tr>
|
| 247 |
|
|
<tr>
|
| 248 |
|
|
<td width="11%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 249 |
|
|
00</td>
|
| 250 |
|
|
<td width="89%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 251 |
|
|
no blink</td>
|
| 252 |
|
|
</tr>
|
| 253 |
|
|
<tr>
|
| 254 |
|
|
<td width="11%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 255 |
|
|
01</td>
|
| 256 |
|
|
<td width="89%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 257 |
|
|
no display</td>
|
| 258 |
|
|
</tr>
|
| 259 |
|
|
<tr>
|
| 260 |
|
|
<td width="11%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 261 |
|
|
10</td>
|
| 262 |
|
|
<td width="89%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 263 |
|
|
1/16 frame rate (4 times per second)</td>
|
| 264 |
|
|
</tr>
|
| 265 |
|
|
<tr>
|
| 266 |
|
|
<td width="11%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 267 |
|
|
11</td>
|
| 268 |
|
|
<td width="89%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 269 |
|
|
1/32 frame rate (2 times per second)</td>
|
| 270 |
|
|
</tr>
|
| 271 |
|
|
</table>
|
| 272 |
|
|
</td>
|
| 273 |
|
|
</tr>
|
| 274 |
|
|
<tr>
|
| 275 |
|
|
<td width="11%" align="center" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="17">
|
| 276 |
|
|
<p> </p>
|
| 277 |
|
|
<p>
|
| 278 |
|
|
<font face="Arial">9</font></td>
|
| 279 |
|
|
<td width="20%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="right" height="17"><font face="Arial">--------
|
| 280 |
|
|
--- eeeee</font></td>
|
| 281 |
|
|
<td width="9%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="center" height="17">
|
| 282 |
|
|
<font face="Arial">W</font></td>
|
| 283 |
|
|
<td width="19%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="17">
|
| 284 |
|
|
<font face="Arial">cursor end</font></td>
|
| 285 |
|
|
<td width="151%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="17">
|
| 286 |
|
|
<font face="Arial">scan line cursor display ends on</font></td>
|
| 287 |
|
|
</tr>
|
| 288 |
|
|
<tr>
|
| 289 |
|
|
<td width="11%" align="center" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="35">
|
| 290 |
|
|
<font face="Arial">10</font></td>
|
| 291 |
|
|
<td width="20%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="right" height="35">
|
| 292 |
|
|
<font face="Arial">aaaaaaaa aaaaaaaa</font></td>
|
| 293 |
|
|
<td width="9%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="center" height="35">
|
| 294 |
|
|
<font face="Arial">W</font></td>
|
| 295 |
|
|
<td width="19%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="35">
|
| 296 |
|
|
<font face="Arial">display offset</font></td>
|
| 297 |
|
|
<td width="151%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="35">
|
| 298 |
|
|
<font face="Arial">starting address of the text screen in the display
|
| 299 |
|
|
memory, defaults to zero</font></td>
|
| 300 |
|
|
</tr>
|
| 301 |
|
|
<tr>
|
| 302 |
|
|
<td width="11%" align="center" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="17">
|
| 303 |
|
|
<font face="Arial">11</font></td>
|
| 304 |
|
|
<td width="20%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="right" height="17">
|
| 305 |
|
|
<font face="Arial">aaaaaaaa aaaaaaaa</font></td>
|
| 306 |
|
|
<td width="9%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="center" height="17">
|
| 307 |
|
|
<font face="Arial">W</font></td>
|
| 308 |
|
|
<td width="19%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="17">
|
| 309 |
|
|
<font face="Arial">cursor position</font></td>
|
| 310 |
|
|
<td width="151%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="17">
|
| 311 |
|
|
<font face="Arial">location of the cursor in the display memory</font></td>
|
| 312 |
|
|
</tr>
|
| 313 |
|
|
<tr>
|
| 314 |
|
|
<td width="11%" align="center" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="17">
|
| 315 |
|
|
<font face="Arial">12</font></td>
|
| 316 |
|
|
<td width="20%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="right" height="17">
|
| 317 |
|
|
<font face="Arial">aaaaaaaa aaaaaaaa</font></td>
|
| 318 |
|
|
<td width="9%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="center" height="17">
|
| 319 |
|
|
<font face="Arial">R</font></td>
|
| 320 |
|
|
<td width="19%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="17">
|
| 321 |
|
|
<font face="Arial">light pen position</font></td>
|
| 322 |
|
|
<td width="151%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="17">
|
| 323 |
|
|
<font face="Arial">address of the light pen</font></td>
|
| 324 |
|
|
</tr>
|
| 325 |
|
|
<tr>
|
| 326 |
|
|
<td width="11%" align="center" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="17"></td>
|
| 327 |
|
|
<td width="20%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="right" height="17"></td>
|
| 328 |
|
|
<td width="9%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="center" height="17"></td>
|
| 329 |
|
|
<td width="19%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="17"></td>
|
| 330 |
|
|
<td width="151%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="17"></td>
|
| 331 |
|
|
</tr>
|
| 332 |
|
|
<tr>
|
| 333 |
|
|
<td width="11%" align="center" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="17"></td>
|
| 334 |
|
|
<td width="20%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="right" height="17"></td>
|
| 335 |
|
|
<td width="9%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" align="center" height="17"></td>
|
| 336 |
|
|
<td width="19%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="17"></td>
|
| 337 |
|
|
<td width="151%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white" height="17"></td>
|
| 338 |
|
|
</tr>
|
| 339 |
|
|
</table>
|
| 340 |
26 |
robfinch |
<h2 style="margin-bottom: 0"><b>Graphics</b></h2>
|
| 341 |
|
|
<p style="margin-bottom: 0">The core may be used as a low resolution graphics
|
| 342 |
|
|
controller via the programmable character set. The characters can be programmed
|
| 343 |
|
|
for block graphics. For instance each character could be a two by two grid of
|
| 344 |
|
|
pixels. Sixteen different characters would be required to represent all the
|
| 345 |
|
|
different combinations. It is also possible to program characters to a three by
|
| 346 |
|
|
three grid of pixels using all 512 programmable characters to represent every
|
| 347 |
|
|
possible combination of on/off pixels. The default resolution is 84x31 or
|
| 348 |
|
|
(672x248 pixels). This would allow approximately a 224x82 graphics display.</p>
|
| 349 |
|
|
<p style="margin-bottom: 0">Graphics and text may be intermixed by allocating
|
| 350 |
|
|
part of the programmable character set for a graphic arrray. For instance using
|
| 351 |
|
|
256 programmable characters a 128x128 bitmapped display can be created.</p>
|
| 352 |
|
|
<h2 style="margin-bottom: 0"><b>Core Parameters</b></h2>
|
| 353 |
|
|
<table border="1" cellpadding="0" cellspacing="0" width="90%" style="border-left: 1.5pt solid black; border-right: 1.5pt solid black; border-top: 1.5pt solid black; border-bottom: .75pt solid black; background-color: white" fpstyle="27,011111100">
|
| 354 |
|
|
<tr>
|
| 355 |
|
|
<td width="8%" style="font-weight: bold; color: white; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: 1.5pt solid black; background-color: gray">
|
| 356 |
|
|
Name</td>
|
| 357 |
|
|
<td width="13%" align="center" style="font-weight: bold; color: white; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: 1.5pt solid black; background-color: gray">
|
| 358 |
|
|
Default Value</td>
|
| 359 |
|
|
<td width="129%" style="font-weight: bold; color: white; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: 1.5pt solid black; background-color: gray">
|
| 360 |
|
|
Description</td>
|
| 361 |
|
|
</tr>
|
| 362 |
|
|
<tr>
|
| 363 |
|
|
<td width="8%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 364 |
|
|
COLS</td>
|
| 365 |
|
|
<td width="13%" align="center" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 366 |
|
|
84</td>
|
| 367 |
|
|
<td width="129%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 368 |
|
|
default number of columns of text</td>
|
| 369 |
|
|
</tr>
|
| 370 |
|
|
<tr>
|
| 371 |
|
|
<td width="8%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 372 |
|
|
ROWS</td>
|
| 373 |
|
|
<td width="13%" align="center" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 374 |
|
|
31</td>
|
| 375 |
|
|
<td width="129%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 376 |
|
|
default number of rows of text</td>
|
| 377 |
|
|
</tr>
|
| 378 |
|
|
<tr>
|
| 379 |
|
|
<td width="8%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 380 |
|
|
pTextAddress</td>
|
| 381 |
|
|
<td width="13%" align="center" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 382 |
|
|
$FFD00000</td>
|
| 383 |
|
|
<td width="129%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 384 |
|
|
address of the shared text memory as addressed by the processor</td>
|
| 385 |
|
|
</tr>
|
| 386 |
|
|
<tr>
|
| 387 |
|
|
<td width="8%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 388 |
|
|
pBitmapAddress</td>
|
| 389 |
|
|
<td width="13%" align="center" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 390 |
|
|
$FFD20000</td>
|
| 391 |
|
|
<td width="129%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 392 |
|
|
address of the character bitmaps as addressed by the processor</td>
|
| 393 |
|
|
</tr>
|
| 394 |
|
|
<tr>
|
| 395 |
|
|
<td width="8%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 396 |
|
|
pRegAddress</td>
|
| 397 |
|
|
<td width="13%" align="center" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 398 |
|
|
$FFDA0000</td>
|
| 399 |
|
|
<td width="129%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 400 |
|
|
address of the register set</td>
|
| 401 |
|
|
</tr>
|
| 402 |
|
|
<tr>
|
| 403 |
|
|
<td width="8%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white"> </td>
|
| 404 |
|
|
<td width="13%" align="center" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white"> </td>
|
| 405 |
|
|
<td width="129%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white"> </td>
|
| 406 |
|
|
</tr>
|
| 407 |
|
|
</table>
|
| 408 |
23 |
robfinch |
<h2 style="margin-bottom: 0"><b><span lang="en-ca">Module Interface Description</span></b></h2>
|
| 409 |
|
|
<p style="margin-bottom: 0"><span lang="en-ca"><font face="Arial" size="4">
|
| 410 |
|
|
rtfTextController</font></span></p>
|
| 411 |
|
|
<p style="margin-bottom: 0; margin-top:0"><font face="Arial">
|
| 412 |
|
|
<font color="#00FF00">module</font> <span lang="en-ca">rtfTextController</span>(rst_i,
|
| 413 |
|
|
clk_i, cyc_i, stb_i, ack<span lang="en-ca">_o</span>, w<span lang="en-ca">e_i</span>, adr<span lang="en-ca">_i</span>, d<span lang="en-ca">at_i</span>, d<span lang="en-ca">at_o,
|
| 414 |
|
|
vclk, hsync, vsync, blank, border, rgbIn, rgbOut</span>);<br>
|
| 415 |
|
|
<br>
|
| 416 |
|
|
</font></p>
|
| 417 |
|
|
<table border="1" cellspacing="3" width="90%" style="border-left:1.5pt solid black; border-right:1.5pt solid black; border-top:1.5pt solid black; border-bottom:.75pt solid black; background-color:white" fpstyle="27,011111100">
|
| 418 |
|
|
<tr>
|
| 419 |
|
|
<td width="12%" style="font-weight: bold; color: white; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: 1.5pt solid black; background-color: gray"><span lang="en-ca"><b>
|
| 420 |
|
|
<font face="Arial" color="#000080">System</font></b></span></td>
|
| 421 |
|
|
<td width="91%" style="font-weight: bold; color: white; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: 1.5pt solid black; background-color: gray"><b><font face="Arial">Description</font></b></td>
|
| 422 |
|
|
</tr>
|
| 423 |
|
|
<tr>
|
| 424 |
|
|
<td width="12%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white"><font face="Arial">rst_i</font></td>
|
| 425 |
|
|
<td width="91%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white"><font face="Arial">This signal is normally connected to the
|
| 426 |
|
|
system reset signal. It resets the <span lang="en-ca">text controller</span>
|
| 427 |
|
|
interface forcing it to the <span lang="en-ca">reset</span> state. </font>
|
| 428 |
|
|
</td>
|
| 429 |
|
|
</tr>
|
| 430 |
|
|
<tr>
|
| 431 |
|
|
<td width="12%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white"><font face="Arial">clk_i</font></td>
|
| 432 |
|
|
<td width="91%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white"><font face="Arial"><span lang="en-ca">T</span>his is usually
|
| 433 |
|
|
connected to the system clock and is used as a base timing clock for I/O
|
| 434 |
|
|
operations.</font></td>
|
| 435 |
|
|
</tr>
|
| 436 |
|
|
<tr>
|
| 437 |
|
|
<td width="103%" colspan="2" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 438 |
|
|
<font color="#000080" face="Arial">
|
| 439 |
|
|
<span lang="en-ca">Slave Port</span></font></td>
|
| 440 |
|
|
</tr>
|
| 441 |
|
|
<tr>
|
| 442 |
|
|
<td width="12%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white"><font face="Arial">cyc_i</font></td>
|
| 443 |
|
|
<td width="91%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white"><font face="Arial">indicates that a valid bus cycle is
|
| 444 |
|
|
taking place. The core will not respond to the bus unless this signal is
|
| 445 |
|
|
active.</font></td>
|
| 446 |
|
|
</tr>
|
| 447 |
|
|
<tr>
|
| 448 |
|
|
<td width="12%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 449 |
|
|
<font face="Arial">stb_i</font></td>
|
| 450 |
|
|
<td width="91%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 451 |
|
|
<font face="Arial">This strobe signal also indicates that a valid bus cycle is
|
| 452 |
|
|
taking place</font></td>
|
| 453 |
|
|
</tr>
|
| 454 |
|
|
<tr>
|
| 455 |
|
|
<td width="12%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white"><font face="Arial">ack_o</font></td>
|
| 456 |
|
|
<td width="91%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white"><font face="Arial">This signal indicates that the core has
|
| 457 |
|
|
processed the bus transaction (it is the logical and of cyc_i and stb_i).</font></td>
|
| 458 |
|
|
</tr>
|
| 459 |
|
|
<tr>
|
| 460 |
|
|
<td width="12%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white"><font face="Arial">we_i</font></td>
|
| 461 |
|
|
<td width="91%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white"><font face="Arial">This signal is used to signify a write
|
| 462 |
|
|
operation to the text controller<span lang="en-ca">.</span></font></td>
|
| 463 |
|
|
</tr>
|
| 464 |
|
|
<tr>
|
| 465 |
|
|
<td width="12%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white"><font face="Arial">adr<span lang="en-ca">_i</span></font></td>
|
| 466 |
|
|
<td width="91%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 467 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">This
|
| 468 |
|
|
<span lang="en-ca">thirty-two bit </span>address b<span lang="en-ca">us
|
| 469 |
|
|
is </span>used
|
| 470 |
|
|
to address one of <span lang="en-ca">text controller</span></font><span lang="en-ca"><font face="Arial">s'</font></span><font face="Arial"><span lang="en-ca">s</span> registers
|
| 471 |
|
|
or internal memory. (Registers are described
|
| 472 |
|
|
below). </font><span lang="en-ca">
|
| 473 |
|
|
<font face="Arial">Registers respond to the address range $FFDA_00xx</font></span></p>
|
| 474 |
|
|
</td>
|
| 475 |
|
|
</tr>
|
| 476 |
|
|
<tr>
|
| 477 |
|
|
<td width="12%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white"><font face="Arial">dat_i</font></td>
|
| 478 |
|
|
<td width="91%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white"><font face="Arial">This is the <span lang="en-ca">sixteen</span>
|
| 479 |
|
|
bit data input bus to the <span lang="en-ca">text controller</span>.</font></td>
|
| 480 |
|
|
</tr>
|
| 481 |
|
|
<tr>
|
| 482 |
|
|
<td width="12%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white"><font face="Arial">dat_o</font></td>
|
| 483 |
|
|
<td width="91%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white"><font face="Arial">This is the <span lang="en-ca">sixteen</span> bit data output bus
|
| 484 |
|
|
from the text controller.</font></td>
|
| 485 |
|
|
</tr>
|
| 486 |
|
|
<tr>
|
| 487 |
|
|
<td width="103%" colspan="2" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 488 |
|
|
<font face="Arial">
|
| 489 |
|
|
<span lang="en-ca"><font color="#000080">Video</font></span><font color="#000080"><span lang="en-ca">
|
| 490 |
|
|
Ports</span></font></font></td>
|
| 491 |
|
|
</tr>
|
| 492 |
|
|
<tr>
|
| 493 |
|
|
<td width="12%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 494 |
|
|
<font face="Arial">vclk</font></td>
|
| 495 |
|
|
<td width="91%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 496 |
|
|
<font face="Arial">This input is the video clock input. Pixel timing is derived from it.</font></td>
|
| 497 |
|
|
</tr>
|
| 498 |
|
|
<tr>
|
| 499 |
|
|
<td width="12%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 500 |
|
|
<font face="Arial">hsync</font></td>
|
| 501 |
|
|
<td width="91%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 502 |
|
|
<font face="Arial">Horizontal sync.
|
| 503 |
|
|
This input signal signals the start/end of a video scanline (end-of-line)</font></td>
|
| 504 |
|
|
</tr>
|
| 505 |
|
|
<tr>
|
| 506 |
|
|
<td width="12%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 507 |
|
|
<font face="Arial">vsync</font></td>
|
| 508 |
|
|
<td width="91%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white"><font face="Arial">
|
| 509 |
|
|
Vertical sync. This <span lang="en-ca">input </span>signal indicates
|
| 510 |
|
|
<span lang="en-ca">the end of the video frame.</span></font></td>
|
| 511 |
|
|
</tr>
|
| 512 |
|
|
<tr>
|
| 513 |
|
|
<td width="12%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 514 |
|
|
<font face="Arial">blank</font></td>
|
| 515 |
|
|
<td width="91%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white"><font face="Arial">This
|
| 516 |
|
|
input signal indicates that the display should be blanked. It is active
|
| 517 |
|
|
during the video blanking period.</font></td>
|
| 518 |
|
|
</tr>
|
| 519 |
|
|
<tr>
|
| 520 |
|
|
<td width="12%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 521 |
|
|
<font face="Arial">
|
| 522 |
|
|
<span lang="en-ca">border</span></font></td>
|
| 523 |
|
|
<td width="91%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 524 |
|
|
<font face="Arial">This input signal indicates that a border area is active.</font></td>
|
| 525 |
|
|
</tr>
|
| 526 |
|
|
<tr>
|
| 527 |
|
|
<td width="12%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 528 |
|
|
<font face="Arial">rgbIn</font></td>
|
| 529 |
|
|
<td width="91%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 530 |
|
|
<font face="Arial">This 24 bit input bus can be connected to an external RGB input. (The text
|
| 531 |
|
|
controller may display on top of the external input).</font></td>
|
| 532 |
|
|
</tr>
|
| 533 |
|
|
<tr>
|
| 534 |
|
|
<td width="12%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 535 |
|
|
<font face="Arial">rgbOut</font></td>
|
| 536 |
|
|
<td width="91%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 537 |
|
|
<font face="Arial">This output signal bus contains the 24 bit RGB display data.</font></td>
|
| 538 |
|
|
</tr>
|
| 539 |
|
|
<tr>
|
| 540 |
|
|
<td width="12%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white"><span lang="en-ca"><b>
|
| 541 |
|
|
<font face="Arial" color="#000080">Parameters</font></b></span></td>
|
| 542 |
|
|
<td width="91%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white"> </td>
|
| 543 |
|
|
</tr>
|
| 544 |
|
|
<tr>
|
| 545 |
|
|
<td width="12%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 546 |
|
|
<font face="Arial">ROWS</font></td>
|
| 547 |
|
|
<td width="91%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white"><font face="Arial">Use this parameter to specify the
|
| 548 |
|
|
default number of text rows.</font></td>
|
| 549 |
|
|
</tr>
|
| 550 |
|
|
<tr>
|
| 551 |
|
|
<td width="12%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 552 |
|
|
<font face="Arial">COLS</font></td>
|
| 553 |
|
|
<td width="91%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
|
| 554 |
|
|
<font face="Arial">Use this parameter to specify the default number of text columns.</font></td>
|
| 555 |
|
|
</tr>
|
| 556 |
|
|
</table>
|
| 557 |
|
|
<p style="margin-top: 0; margin-bottom: 0"> </p>
|
| 558 |
|
|
<hr>
|
| 559 |
|
|
<p> </p>
|
| 560 |
|
|
|
| 561 |
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<h1 style="margin-bottom: 0"><b><font size="4" face="Arial">WISHBONE Compatibility
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Datasheet</font></b></h1>
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<p style="margin-bottom: 0"><font face="Arial">The text controller core may be directly
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interfaced to a WISHBONE compatible bus.</font></p>
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<p style="margin-bottom: 0"> </p>
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<table cellpadding="0" cellspacing="0" style="border-collapse: collapse; border-left-style: solid; border-left-width: 1; border-right-style: solid; border-right-width: 1; border-top-style: double; border-top-width: 3; border-bottom-style: solid; border-bottom-width: 1" width="65%">
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<tr>
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<td width="100%" colspan="3" bordercolor="#000000" style="border-style: solid; border-width: 1">
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">WISHBONE
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Datasheet</font></p>
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">WISHBONE SoC
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Architecture Specification, Revision B.3</font></td>
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</tr>
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<tr>
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<td width="45%" bordercolor="#000000" style="border-style: solid; border-width: 1">
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<p style="margin-top: 0; margin-bottom: 0"> </td>
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<td width="55%" colspan="2" bordercolor="#000000" style="border-style: solid; border-width: 1">
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<p style="margin-top: 0; margin-bottom: 0"> </td>
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</tr>
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<tr>
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<td width="45%" bordercolor="#000000" style="border-style: solid; border-width: 1">
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">Description:</font></td>
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<td width="55%" colspan="2" bordercolor="#000000" style="border-style: solid; border-width: 1">
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">
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Specifications:</font></td>
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</tr>
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<tr>
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<td width="45%" bordercolor="#000000" style="border-style: solid; border-width: 1">
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">General
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Description:</font></td>
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<td width="55%" colspan="2" bordercolor="#000000" style="border-style: solid; border-width: 1">
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<p style="margin-top: 0; margin-bottom: 0"><span lang="en-ca">
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rtfTextController - Text mode video display controller</span></td>
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</tr>
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<tr>
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<td width="45%" bordercolor="#000000" style="border-style: solid; border-width: 1">
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">Supported
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Cycles:</font></td>
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<td width="55%" colspan="2" bordercolor="#000000" style="border-style: solid; border-width: 1">
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">SLAVE, READ /
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WRITE</font></p>
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">SLAVE, BLOCK
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READ / WRITE</font></p>
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">SLAVE, RMW</font></td>
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</tr>
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<tr>
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<td width="45%" bordercolor="#000000" style="border-style: solid; border-width: 1">
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">Data port,
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size:</font></p>
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">Data port,
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granularity:</font></p>
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">Data port,
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maximum operand size:</font></p>
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">Data transfer
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ordering:</font></p>
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">Data transfer
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sequencing</font></td>
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<td width="55%" colspan="2" bordercolor="#000000" style="border-style: solid; border-width: 1">
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<p style="margin-top: 0; margin-bottom: 0">32<font face="Arial">
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bit</font></p>
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">32 bit</font></p>
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">
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32 bit</font></p>
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">Little Endian</font></p>
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">any
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(undefined)</font></td>
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</tr>
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<tr>
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<td width="45%" bordercolor="#000000" style="border-style: solid; border-width: 1">
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">Clock
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frequency constraints:</font></td>
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<td width="55%" colspan="2" bordercolor="#000000" style="border-style: solid; border-width: 1"> </td>
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</tr>
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<tr>
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<td width="45%" valign="top" bordercolor="#000000" style="border-style: solid; border-width: 1">
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">Supported
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signal list and cross reference to equivalent WISHBONE signals</font></td>
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<td width="25%" valign="top" bordercolor="#000000" style="border-style: solid; border-width: 1">
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">Signal Name:</font></p>
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">ack<span lang="en-ca">_o</span></font></p>
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">adr<span lang="en-ca">_i(31:0)</span></font></p>
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">clk<span lang="en-ca">_i</span></font></p>
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">d<span lang="en-ca">at_i</span>(31:0)</font></p>
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">d<span lang="en-ca">a</span>t<span lang="en-ca">_o</span>(31:0)</font></p>
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">cyc<span lang="en-ca">_i</span></font></p>
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<p style="margin-top: 0; margin-bottom: 0"><span lang="en-ca">stb_i</span></p>
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">w<span lang="en-ca">e_i</span></font></td>
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| 648 |
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<td width="30%" bordercolor="#000000" style="border-style: solid; border-width: 1">
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| 649 |
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">WISHBONE
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Equiv.</font></p>
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">ACK_O</font></p>
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| 652 |
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">ADR_I()</font></p>
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| 653 |
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">CLK_I</font></p>
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| 654 |
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">DAT_I()</font></p>
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">DAT_O()</font></p>
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">CYC_I</font></p>
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">STB_I</font></p>
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">WE_I</font></p>
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<p style="margin-top: 0; margin-bottom: 0"> </td>
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</tr>
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| 661 |
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<tr>
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| 662 |
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<td width="45%" bordercolor="#000000" style="border-style: solid; border-width: 1">
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| 663 |
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<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">Special
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Requirements:</font></td>
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| 665 |
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<td width="55%" colspan="2" bordercolor="#000000" style="border-style: solid; border-width: 1">
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| 666 |
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<p style="margin-top: 0; margin-bottom: 0">external sync generator</td>
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| 667 |
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</tr>
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| 668 |
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</table>
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<p style="margin-bottom: 0"> </p>
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| 671 |
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| 672 |
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<p> </p>
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</body>
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</html>
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