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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" type="text/css" href="../../_themes/water/wate1011.css"><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">rtfTextController</font></p>
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<p><font size="5">Description</font></p>
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<p><font size="4">This is a text mode video display controller that supports
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color. The display memory is nine bits wide, allowing 512 different
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simulataneous characters to be displayed. The controller uses several internal
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memories.</font></p>
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<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">
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<tr>
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<td width="27%" 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="73%" 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="27%" 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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$FFD0_xxxx</td>
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<td width="73%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
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text screen memory area, currently the controller only supports a 4k memory</td>
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</tr>
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<tr>
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<td width="27%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
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$FFD1_xxxx</td>
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<td width="73%" 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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color attribute memory area, currently the controller only supports a 4k
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memory</td>
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</tr>
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<tr>
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<td width="27%" 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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$FFD2_xxxx</td>
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<td width="73%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
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character bitmap memory, currently the controller only supports a 4k memory,
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which allows 512 8x8 character bitmaps.</td>
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</tr>
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<tr>
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<td width="27%" style="font-weight: normal; color: black; border-left-style: none; border-right-style: none; border-top-style: none; border-bottom: .75pt solid black; background-color: white">
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$FFDA_00xx</td>
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<td width="73%" 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="27%" 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="73%" 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"> </p>
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<p><font face="Arial"><b>Register Description</b></font></p>
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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">
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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"><font face="Arial"><b>Reg. No.</b></font></td>
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<td width="26%" 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">15
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0</font></b></td>
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<td width="28%" 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"><font face="Arial"><b>Function</b></font></td>
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<td width="111%" 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"><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"><font face="Arial">0</font></td>
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<td width="26%" 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">
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-------- nnnnnnnn</font></td>
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<td width="28%" 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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<font face="Arial">number of columns</font></td>
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<td width="111%" 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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<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"><font face="Arial">1</font></td>
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<td width="26%" 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">-------- nnnnnnnn</font></td>
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<td width="28%" 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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<font face="Arial">number of row</font></td>
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<td width="111%" 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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<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"><font face="Arial">2</font></td>
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<td width="26%" 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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---- nnnnnnnnnnnn</td>
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<td width="28%" 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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window left</td>
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<td width="111%" 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 window position- pixels before the display starts, referenced to the
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end-of-line signal</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"><font face="Arial">3</font></td>
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<td width="26%" 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">----
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nnnnnnnnnnnn</font></td>
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<td width="28%" 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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<font face="Arial">window top</font></td>
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<td width="111%" 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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<font face="Arial">Text window position - scan lines down from the top of
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the screen referenced tothe end-of-frame 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"><font face="Arial">4</font></td>
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<td width="26%" 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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<font face="Arial">-------- --- nnnnn</font></td>
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<td width="28%" 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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<font face="Arial">max scanline</font></td>
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<td width="111%" 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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<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"><font face="Arial">5</font></td>
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<td width="26%" 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">--------
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hhhh wwww</font></td>
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<td width="28%" 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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<font face="Arial">pixel size</font></td>
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<td width="111%" 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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<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 3 (four 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">
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<font face="Arial">8</font></td>
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<td width="26%" 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">--------
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--- sssss</font></td>
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<td width="28%" 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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<font face="Arial">cursor start</font></td>
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<td width="111%" 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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<font face="Arial">scan line cursor display starts on</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">
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<font face="Arial">9</font></td>
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<td width="26%" 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">--------
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--- eeeee</font></td>
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<td width="28%" 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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<font face="Arial">cursor end</font></td>
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<td width="111%" 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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<font face="Arial">scan line cursor display ends on</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">
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<font face="Arial">10</font></td>
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<td width="26%" 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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aaaaaaaa aaaaaaaa</td>
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<td width="28%" 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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display offset</td>
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<td width="111%" 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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<font face="Arial">starting address of the text screen in the display
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memory, defaults to zero</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">
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| 161 |
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<font face="Arial">11</font></td>
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<td width="26%" 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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| 163 |
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aaaaaaaa aaaaaaaa</td>
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<td width="28%" 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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cursor position</td>
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| 166 |
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<td width="111%" 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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| 167 |
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<font face="Arial">location of the cursor in the display memory</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">
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| 171 |
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<font face="Arial">12</font></td>
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| 172 |
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<td width="26%" 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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<font face="Arial">aaaaaaaa aaaaaaaa</font></td>
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<td width="28%" 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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<font face="Arial">light pen position</font></td>
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<td width="111%" 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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<font face="Arial">address of the light pen</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"> </td>
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| 181 |
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<td width="26%" 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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| 182 |
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<td width="28%" 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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| 183 |
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<td width="111%" 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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<tr>
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| 186 |
|
|
<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"> </td>
|
| 187 |
|
|
<td width="26%" 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>
|
| 188 |
|
|
<td width="28%" 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>
|
| 189 |
|
|
<td width="111%" 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>
|
| 190 |
|
|
</tr>
|
| 191 |
|
|
</table>
|
| 192 |
|
|
<p style="margin-bottom: 0"> </p>
|
| 193 |
|
|
<p style="margin-bottom: 0"><b><span lang="en-ca">Module Interface Description</span></b></p>
|
| 194 |
|
|
<p style="margin-bottom: 0"><span lang="en-ca"><font face="Arial" size="4">
|
| 195 |
|
|
rtfTextController</font></span></p>
|
| 196 |
|
|
<p style="margin-bottom: 0; margin-top:0"><font face="Arial">
|
| 197 |
|
|
<font color="#00FF00">module</font> <span lang="en-ca">rtfTextController</span>(rst_i,
|
| 198 |
|
|
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,
|
| 199 |
|
|
vclk, eol, eof, blank, border, rgbIn, rgbOut</span>);<br>
|
| 200 |
|
|
<br>
|
| 201 |
|
|
</font></p>
|
| 202 |
|
|
<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">
|
| 203 |
|
|
<tr>
|
| 204 |
|
|
<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>
|
| 205 |
|
|
<font face="Arial" color="#000080">System</font></b></span></td>
|
| 206 |
|
|
<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>
|
| 207 |
|
|
</tr>
|
| 208 |
|
|
<tr>
|
| 209 |
|
|
<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>
|
| 210 |
|
|
<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
|
| 211 |
|
|
system reset signal. It resets the <span lang="en-ca">text controller</span>
|
| 212 |
|
|
interface forcing it to the <span lang="en-ca">reset</span> state. </font>
|
| 213 |
|
|
</td>
|
| 214 |
|
|
</tr>
|
| 215 |
|
|
<tr>
|
| 216 |
|
|
<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>
|
| 217 |
|
|
<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
|
| 218 |
|
|
connected to the system clock and is used as a base timing clock for I/O
|
| 219 |
|
|
operations.</font></td>
|
| 220 |
|
|
</tr>
|
| 221 |
|
|
<tr>
|
| 222 |
|
|
<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"><font color="#000080">
|
| 223 |
|
|
<span lang="en-ca">Slave Port</span></font></td>
|
| 224 |
|
|
</tr>
|
| 225 |
|
|
<tr>
|
| 226 |
|
|
<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>
|
| 227 |
|
|
<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
|
| 228 |
|
|
taking place. The core will not respond to the bus unless this signal is
|
| 229 |
|
|
active.</font></td>
|
| 230 |
|
|
</tr>
|
| 231 |
|
|
<tr>
|
| 232 |
|
|
<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">stb_i</td>
|
| 233 |
|
|
<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">This strobe signal also indicates that a valid bus cycle is
|
| 234 |
|
|
taking place</td>
|
| 235 |
|
|
</tr>
|
| 236 |
|
|
<tr>
|
| 237 |
|
|
<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>
|
| 238 |
|
|
<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
|
| 239 |
|
|
processed the bus transaction (it is the logical and of cyc_i and stb_i).</font></td>
|
| 240 |
|
|
</tr>
|
| 241 |
|
|
<tr>
|
| 242 |
|
|
<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>
|
| 243 |
|
|
<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
|
| 244 |
|
|
operation to the text controller<span lang="en-ca">.</span></font></td>
|
| 245 |
|
|
</tr>
|
| 246 |
|
|
<tr>
|
| 247 |
|
|
<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>
|
| 248 |
|
|
<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">
|
| 249 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">This
|
| 250 |
|
|
<span lang="en-ca">thirty-two bit </span>address b<span lang="en-ca">us
|
| 251 |
|
|
is </span>used
|
| 252 |
|
|
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
|
| 253 |
|
|
or internal memory. (Registers are described
|
| 254 |
|
|
below). </font><span lang="en-ca">
|
| 255 |
|
|
<font face="Arial">Registers respond to the address range $FFDA_00xx</font></span></p>
|
| 256 |
|
|
</td>
|
| 257 |
|
|
</tr>
|
| 258 |
|
|
<tr>
|
| 259 |
|
|
<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>
|
| 260 |
|
|
<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>
|
| 261 |
|
|
bit data input bus to the <span lang="en-ca">text controller</span>.</font></td>
|
| 262 |
|
|
</tr>
|
| 263 |
|
|
<tr>
|
| 264 |
|
|
<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>
|
| 265 |
|
|
<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
|
| 266 |
|
|
from the text controller.</font></td>
|
| 267 |
|
|
</tr>
|
| 268 |
|
|
<tr>
|
| 269 |
|
|
<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">
|
| 270 |
|
|
<span lang="en-ca"><font color="#000080">Video</font></span><font color="#000080"><span lang="en-ca">
|
| 271 |
|
|
Ports</span></font></td>
|
| 272 |
|
|
</tr>
|
| 273 |
|
|
<tr>
|
| 274 |
|
|
<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">
|
| 275 |
|
|
<font face="Arial">vclk</font></td>
|
| 276 |
|
|
<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">
|
| 277 |
|
|
This input is the video clock input. Pixel timing is derived from it.</td>
|
| 278 |
|
|
</tr>
|
| 279 |
|
|
<tr>
|
| 280 |
|
|
<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">
|
| 281 |
|
|
eol</td>
|
| 282 |
|
|
<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">
|
| 283 |
|
|
This input signal signals the end of a video scanline (end-of-line)</td>
|
| 284 |
|
|
</tr>
|
| 285 |
|
|
<tr>
|
| 286 |
|
|
<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">
|
| 287 |
|
|
<font face="Arial">eof</font></td>
|
| 288 |
|
|
<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 <span lang="en-ca">input </span>signal indicates
|
| 289 |
|
|
<span lang="en-ca">the end of the video frame.</span></font></td>
|
| 290 |
|
|
</tr>
|
| 291 |
|
|
<tr>
|
| 292 |
|
|
<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">
|
| 293 |
|
|
blank</td>
|
| 294 |
|
|
<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
|
| 295 |
|
|
input signal indicates that the display should be blanked. It is active
|
| 296 |
|
|
during the video blanking period.</font></td>
|
| 297 |
|
|
</tr>
|
| 298 |
|
|
<tr>
|
| 299 |
|
|
<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">
|
| 300 |
|
|
<span lang="en-ca">border</span></td>
|
| 301 |
|
|
<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">
|
| 302 |
|
|
This input signal indicates that a border area is active.</td>
|
| 303 |
|
|
</tr>
|
| 304 |
|
|
<tr>
|
| 305 |
|
|
<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">
|
| 306 |
|
|
<font face="Arial">rgbIn</font></td>
|
| 307 |
|
|
<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">
|
| 308 |
|
|
This 24 bit input bus can be connected to an external RGB input. (The text
|
| 309 |
|
|
controller may display on top of the external input).</td>
|
| 310 |
|
|
</tr>
|
| 311 |
|
|
<tr>
|
| 312 |
|
|
<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">
|
| 313 |
|
|
<font face="Arial">rgbOut</font></td>
|
| 314 |
|
|
<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">
|
| 315 |
|
|
This output signal bus contains the 24 bit RGB display data.</td>
|
| 316 |
|
|
</tr>
|
| 317 |
|
|
<tr>
|
| 318 |
|
|
<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>
|
| 319 |
|
|
<font face="Arial" color="#000080">Parameters</font></b></span></td>
|
| 320 |
|
|
<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>
|
| 321 |
|
|
</tr>
|
| 322 |
|
|
<tr>
|
| 323 |
|
|
<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">
|
| 324 |
|
|
<font face="Arial">ROWS</font></td>
|
| 325 |
|
|
<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
|
| 326 |
|
|
default number of text rows.</font></td>
|
| 327 |
|
|
</tr>
|
| 328 |
|
|
<tr>
|
| 329 |
|
|
<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">
|
| 330 |
|
|
COLS</td>
|
| 331 |
|
|
<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">
|
| 332 |
|
|
Use this parameter to specify the default number of text columns.</td>
|
| 333 |
|
|
</tr>
|
| 334 |
|
|
</table>
|
| 335 |
|
|
<p style="margin-top: 0; margin-bottom: 0"> </p>
|
| 336 |
|
|
<hr>
|
| 337 |
|
|
<p> </p>
|
| 338 |
|
|
|
| 339 |
|
|
<h1 style="margin-bottom: 0"><b><font size="4" face="Arial">WISHBONE Compatibility
|
| 340 |
|
|
Datasheet</font></b></h1>
|
| 341 |
|
|
<p style="margin-bottom: 0"><font face="Arial">The text controller core may be directly
|
| 342 |
|
|
interfaced to a WISHBONE compatible bus.</font></p>
|
| 343 |
|
|
<p style="margin-bottom: 0"> </p>
|
| 344 |
|
|
<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%">
|
| 345 |
|
|
<tr>
|
| 346 |
|
|
<td width="100%" colspan="3" bordercolor="#000000" style="border-style: solid; border-width: 1">
|
| 347 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">WISHBONE
|
| 348 |
|
|
Datasheet</font></p>
|
| 349 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">WISHBONE SoC
|
| 350 |
|
|
Architecture Specification, Revision B.3</font></td>
|
| 351 |
|
|
</tr>
|
| 352 |
|
|
<tr>
|
| 353 |
|
|
<td width="45%" bordercolor="#000000" style="border-style: solid; border-width: 1">
|
| 354 |
|
|
<p style="margin-top: 0; margin-bottom: 0"> </td>
|
| 355 |
|
|
<td width="55%" colspan="2" bordercolor="#000000" style="border-style: solid; border-width: 1">
|
| 356 |
|
|
<p style="margin-top: 0; margin-bottom: 0"> </td>
|
| 357 |
|
|
</tr>
|
| 358 |
|
|
<tr>
|
| 359 |
|
|
<td width="45%" bordercolor="#000000" style="border-style: solid; border-width: 1">
|
| 360 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">Description:</font></td>
|
| 361 |
|
|
<td width="55%" colspan="2" bordercolor="#000000" style="border-style: solid; border-width: 1">
|
| 362 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">
|
| 363 |
|
|
Specifications:</font></td>
|
| 364 |
|
|
</tr>
|
| 365 |
|
|
<tr>
|
| 366 |
|
|
<td width="45%" bordercolor="#000000" style="border-style: solid; border-width: 1">
|
| 367 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">General
|
| 368 |
|
|
Description:</font></td>
|
| 369 |
|
|
<td width="55%" colspan="2" bordercolor="#000000" style="border-style: solid; border-width: 1">
|
| 370 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><span lang="en-ca">
|
| 371 |
|
|
rtfTextController - Text mode video display controller</span></td>
|
| 372 |
|
|
</tr>
|
| 373 |
|
|
<tr>
|
| 374 |
|
|
<td width="45%" bordercolor="#000000" style="border-style: solid; border-width: 1">
|
| 375 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">Supported
|
| 376 |
|
|
Cycles:</font></td>
|
| 377 |
|
|
<td width="55%" colspan="2" bordercolor="#000000" style="border-style: solid; border-width: 1">
|
| 378 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">SLAVE, READ /
|
| 379 |
|
|
WRITE</font></p>
|
| 380 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">SLAVE, BLOCK
|
| 381 |
|
|
READ / WRITE</font></p>
|
| 382 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">SLAVE, RMW</font></td>
|
| 383 |
|
|
</tr>
|
| 384 |
|
|
<tr>
|
| 385 |
|
|
<td width="45%" bordercolor="#000000" style="border-style: solid; border-width: 1">
|
| 386 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">Data port,
|
| 387 |
|
|
size:</font></p>
|
| 388 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">Data port,
|
| 389 |
|
|
granularity:</font></p>
|
| 390 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">Data port,
|
| 391 |
|
|
maximum operand size:</font></p>
|
| 392 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">Data transfer
|
| 393 |
|
|
ordering:</font></p>
|
| 394 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">Data transfer
|
| 395 |
|
|
sequencing</font></td>
|
| 396 |
|
|
<td width="55%" colspan="2" bordercolor="#000000" style="border-style: solid; border-width: 1">
|
| 397 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><span lang="en-ca">16</span><font face="Arial">
|
| 398 |
|
|
bit</font></p>
|
| 399 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">
|
| 400 |
|
|
<span lang="en-ca">16</span> bit</font></p>
|
| 401 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">
|
| 402 |
|
|
<span lang="en-ca">16</span> bit</font></p>
|
| 403 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">Little Endian</font></p>
|
| 404 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">any
|
| 405 |
|
|
(undefined)</font></td>
|
| 406 |
|
|
</tr>
|
| 407 |
|
|
<tr>
|
| 408 |
|
|
<td width="45%" bordercolor="#000000" style="border-style: solid; border-width: 1">
|
| 409 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">Clock
|
| 410 |
|
|
frequency constraints:</font></td>
|
| 411 |
|
|
<td width="55%" colspan="2" bordercolor="#000000" style="border-style: solid; border-width: 1"> </td>
|
| 412 |
|
|
</tr>
|
| 413 |
|
|
<tr>
|
| 414 |
|
|
<td width="45%" valign="top" bordercolor="#000000" style="border-style: solid; border-width: 1">
|
| 415 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">Supported
|
| 416 |
|
|
signal list and cross reference to equivalent WISHBONE signals</font></td>
|
| 417 |
|
|
<td width="25%" valign="top" bordercolor="#000000" style="border-style: solid; border-width: 1">
|
| 418 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">Signal Name:</font></p>
|
| 419 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">ack<span lang="en-ca">_o</span></font></p>
|
| 420 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">adr<span lang="en-ca">_i(31:0)</span></font></p>
|
| 421 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">clk<span lang="en-ca">_i</span></font></p>
|
| 422 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">d<span lang="en-ca">at_i</span>(<span lang="en-ca">15</span>:0)</font></p>
|
| 423 |
|
|
<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>(<span lang="en-ca">15</span>:0)</font></p>
|
| 424 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">cyc<span lang="en-ca">_i</span></font></p>
|
| 425 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><span lang="en-ca">stb_i</span></p>
|
| 426 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">w<span lang="en-ca">e_i</span></font></td>
|
| 427 |
|
|
<td width="30%" bordercolor="#000000" style="border-style: solid; border-width: 1">
|
| 428 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">WISHBONE
|
| 429 |
|
|
Equiv.</font></p>
|
| 430 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">ACK_O</font></p>
|
| 431 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">ADR_I()</font></p>
|
| 432 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">CLK_I</font></p>
|
| 433 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">DAT_I()</font></p>
|
| 434 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">DAT_O()</font></p>
|
| 435 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">CYC_I</font></p>
|
| 436 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">STB_I</font></p>
|
| 437 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">WE_I</font></p>
|
| 438 |
|
|
<p style="margin-top: 0; margin-bottom: 0"> </td>
|
| 439 |
|
|
</tr>
|
| 440 |
|
|
<tr>
|
| 441 |
|
|
<td width="45%" bordercolor="#000000" style="border-style: solid; border-width: 1">
|
| 442 |
|
|
<p style="margin-top: 0; margin-bottom: 0"><font face="Arial">Special
|
| 443 |
|
|
Requirements:</font></td>
|
| 444 |
|
|
<td width="55%" colspan="2" bordercolor="#000000" style="border-style: solid; border-width: 1">
|
| 445 |
|
|
<p style="margin-top: 0; margin-bottom: 0">external sync generator</td>
|
| 446 |
|
|
</tr>
|
| 447 |
|
|
</table>
|
| 448 |
|
|
|
| 449 |
|
|
<p style="margin-bottom: 0"> </p>
|
| 450 |
|
|
|
| 451 |
|
|
<p> </p>
|
| 452 |
|
|
|
| 453 |
|
|
</body>
|
| 454 |
|
|
|
| 455 |
|
|
</html>
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