📄 freerisc8_legal.htm
字号:
<html>
<head>
<meta http-equiv="Content-Language" content="en-us">
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<meta name="GENERATOR" content="Microsoft FrontPage 4.0">
<meta name="ProgId" content="FrontPage.Editor.Document">
<title>Free-RISC8 Legal</title>
<meta name="Microsoft Theme" content="expeditn 111, default">
<meta name="Microsoft Border" content="b, default">
</head>
<body background="_themes/expeditn/exptextb.jpg" bgcolor="#FFFFCC" text="#000000" link="#666600" vlink="#993300" alink="#CC3300"><!--msnavigation--><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr><!--msnavigation--><td valign="top"><!--mstheme--><font face="Book Antiqua, Times New Roman, Times">
<p align="center"><!--webbot bot="Navigation" S-Type="banner" S-Rendering
S-Orientation B-Include-Home B-Include-Up U-Page S-Target startspan --><img src="_derived/freerisc8_legal.htm_cmp_expeditn110_bnr.gif" width="600" height="60" border="0" alt="Free-RISC8 Legal"><!--webbot bot="Navigation" endspan i-checksum="56752" -->
</p>
<p align="center"><!--webbot bot="Navigation" S-Type="children"
S-Orientation="horizontal" S-Rendering="graphics" B-Include-Home="TRUE"
B-Include-Up="TRUE" U-Page S-Target startspan --><script language="JavaScript"><!--
MSFPhover =
(((navigator.appName == "Netscape") &&
(parseInt(navigator.appVersion) >= 3 )) ||
((navigator.appName == "Microsoft Internet Explorer") &&
(parseInt(navigator.appVersion) >= 4 )));
function MSFPpreload(img)
{
var a=new Image(); a.src=img; return a;
}
// --></script><script language="JavaScript"><!--
if(MSFPhover) { MSFPnav1n=MSFPpreload("_derived/home_cmp_expeditn110_hbtn.gif"); MSFPnav1h=MSFPpreload("_derived/home_cmp_expeditn110_hbtn_a.gif"); }
// --></script><a href="index.htm" language="JavaScript" onmouseover="if(MSFPhover) document['MSFPnav1'].src=MSFPnav1h.src" onmouseout="if(MSFPhover) document['MSFPnav1'].src=MSFPnav1n.src"><img src="_derived/home_cmp_expeditn110_hbtn.gif" width="140" height="50" border="0" alt="Free-RISC8 Home" align="middle" name="MSFPnav1"></a><!--webbot bot="Navigation" endspan i-checksum="26895" -->
</p>
<h3><!--mstheme--><font color="#666600">Introduction<!--mstheme--></font></h3>
<p><b>The Free-IP Project has researched potential patent issues reguarding the
Free-RISC8 core and we believe that, to the best of our knowledge, there are no
legal problems with using this core. </b></p>
<p>Unfortunately, with this lawsuit happy industry and the many silly patents
out there, we would need a large full time staff just to investigate every
patent. This is not practical with a small, resource limited organization
like the Free-IP Project. Instead, we have targeted our legal search to
the most obvious places. No problems were found. If, in the future,
something comes to our attention we will make our best effort to resolve the
problem quickly and with a minimum of fuss.</p>
<p><font color="#FF0000"><b> It
should be noted, however, that Microchip Tech, Inc. has many patents that don't
directly
apply to the Free-RISC8 core but could apply to an ASIC using the Free-RISC8
core plus other user-supplied peripheral logic. For example, there is a
patent on a microcontroller + ADC. Be aware of these when designing
a complete system. </b></font></p>
<p>The remainder of this page contains misc. legal stuff that might be of
interest to users of the Free-RISC8 core. </p>
<p> </p>
<h3><!--mstheme--><font color="#666600">Prior Legal Suits<!--mstheme--></font></h3>
<p>The following are taken from the <a href="http://www.microchip.com/">Microchip
Technology, Inc.</a> web site. They are press releases related to
litigation and other legal matters.</p>
<blockquote>
<!--mstheme--></font><!--msthemelist--><table border="0" cellpadding="0" cellspacing="0" width="100%">
<!--msthemelist--><tr><td valign="top" width="42"><img src="_themes/expeditn/expbul1a.gif" width="15" height="15" hspace="13"></td><td valign="top" width="100%"><!--mstheme--><font face="Book Antiqua, Times New Roman, Times"><a href="http://www.microchip.com/10/Edit/pRelease/archive/PR103/index.htm">TAIWAN COURT RULES FOR MICROCHIP TECHNOLOGY INC.</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/expeditn/expbul1a.gif" width="15" height="15" hspace="13"></td><td valign="top" width="100%"><!--mstheme--><font face="Book Antiqua, Times New Roman, Times"><a href="http://www.microchip.com/10/Edit/pRelease/archive/PR96/index.htm">MICROCHIP TECHNOLOGY TO FILE NOTICE OF APPEAL</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/expeditn/expbul1a.gif" width="15" height="15" hspace="13"></td><td valign="top" width="100%"><!--mstheme--><font face="Book Antiqua, Times New Roman, Times"><a href="http://www.microchip.com/10/Edit/pRelease/archive/PR93/index.htm">MICROCHIP TECHNOLOGY FILES COPYRIGHT INFRINGEMENT SUIT AGAINST MICON DESIGN<br>
TECHNOLOGY CO. LTD.</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/expeditn/expbul1a.gif" width="15" height="15" hspace="13"></td><td valign="top" width="100%"><!--mstheme--><font face="Book Antiqua, Times New Roman, Times"><a href="http://www.microchip.com/10/Edit/pRelease/archive/PR42/index.htm">MICROCHIP TECHNOLOGY INC., ROHM CORPORATION AND EXEL MICROELECTRONICS<br>
ANNOUNCE SETTLEMENT OF LITIGATION</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/expeditn/expbul1a.gif" width="15" height="15" hspace="13"></td><td valign="top" width="100%"><!--mstheme--><font face="Book Antiqua, Times New Roman, Times"><a href="http://www.microchip.com/10/Edit/pRelease/archive/PR35/index.htm">MICROCHIP TECHNOLOGY ADDS ADDITIONAL COMPLAINT AGAINST SCENIX SEMICONDUCTOR<br>
AND PARALLAX, INC</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--></table><!--mstheme--><font face="Book Antiqua, Times New Roman, Times">
</blockquote>
<h3><!--mstheme--><font color="#666600">Trademarks<!--mstheme--></font></h3>
<p>The following is quoted from the <a href="http://www.microchip.com/">Microchip
Technology, Inc.</a> web site:</p>
<blockquote>
<p align="left">The Microchip name and logo, PIC, PICmicro, PICMASTER, PRO MATE, PICSTART, Envoy, KEELOQ, SEEVAL, PICSEE, TrueGauge and the Embedded Control Solutions Company are registered trademarks of Microchip Technology Inc. in the USA and other countries. SQTP is a servicemark of Microchip Technology Inc. in the USA and other countries. FlexROM, fuzzyLAB, ICSP, In-Circuit Serial Programming, MPLAB, Now Design It, QuickASIC, Smart Serial, Total Endurance, UniMouse and XPressROM are trademarks of Microchip Technology Inc. in the USA and other countries. Windows is a registered trademark of Microsoft Corporation. All other trademarks are the property of their respective owners.</p>
</blockquote>
<p align="left"> </p>
<h3><!--mstheme--><font color="#666600">Patents<!--mstheme--></font></h3>
<p>The following patents are held by Microchip Technology, Inc., and are
possibly relevant to a microcontroller that is implemented in an FPGA. The list of patents is:</p>
<!--mstheme--></font><!--msthemelist--><table border="0" cellpadding="0" cellspacing="0" width="100%">
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/expeditn/expbul1a.gif" width="15" height="15" hspace="13"></td><td valign="top" width="100%"><!--mstheme--><font face="Book Antiqua, Times New Roman, Times"><a href="http://Patent.womplex.ibm.com/details?pn=US05991910__"> US05991910</a>:
Microcontroller having special mode enable detection circuitry and a method of<br>
operation therefore<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/expeditn/expbul1a.gif" width="15" height="15" hspace="13"></td><td valign="top" width="100%"><!--mstheme--><font face="Book Antiqua, Times New Roman, Times"><a href="http://Patent.womplex.ibm.com/details?pn=US05987583__"> US05987583</a>:
Processor architecture scheme and instruction set for maximizing available opcodes and
address selection modes<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/expeditn/expbul1a.gif" width="15" height="15" hspace="13"></td><td valign="top" width="100%"><!--mstheme--><font face="Book Antiqua, Times New Roman, Times"><a href="http://Patent.womplex.ibm.com/details?pn=US05958039__"> US05958039</a>:
Master-slave latches and post increment/decrement operations<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/expeditn/expbul1a.gif" width="15" height="15" hspace="13"></td><td valign="top" width="100%"><!--mstheme--><font face="Book Antiqua, Times New Roman, Times"><a href="http://Patent.womplex.ibm.com/details?pn=US05905880__"> US05905880</a>:
Robust multiple word instruction and method therefore<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/expeditn/expbul1a.gif" width="15" height="15" hspace="13"></td><td valign="top" width="100%"><!--mstheme--><font face="Book Antiqua, Times New Roman, Times"><a href="http://Patent.womplex.ibm.com/details?pn=US05847450__">US05847450</a>:
Microcontroller having an n-bit data bus width with less than n I/O pins<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/expeditn/expbul1a.gif" width="15" height="15" hspace="13"></td><td valign="top" width="100%"><!--mstheme--><font face="Book Antiqua, Times New Roman, Times"><a href="http://Patent.womplex.ibm.com/details?pn=US05694067__">US05694067</a>:
Microcontroller having a minimal number of external components<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/expeditn/expbul1a.gif" width="15" height="15" hspace="13"></td><td valign="top" width="100%"><!--mstheme--><font face="Book Antiqua, Times New Roman, Times"><a href="http://Patent.womplex.ibm.com/details?pn=US05455937__"> US05455937</a>:
Microcontroller with fuse-emulating latches<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/expeditn/expbul1a.gif" width="15" height="15" hspace="13"></td><td valign="top" width="100%"><!--mstheme--><font face="Book Antiqua, Times New Roman, Times"><a href="http://Patent.womplex.ibm.com/details?pn=US05454114__">US05454114</a>:
Microcontroller power-up delay<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/expeditn/expbul1a.gif" width="15" height="15" hspace="13"></td><td valign="top" width="100%"><!--mstheme--><font face="Book Antiqua, Times New Roman, Times"><a href="http://Patent.womplex.ibm.com/details?pn=US05231603__"> US05231603</a>:
Variable page ROM<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--></table><!--mstheme--><font face="Book Antiqua, Times New Roman, Times">
<p> </p>
<!--mstheme--></font><!--msnavigation--></td></tr><!--msnavigation--></table><!--msnavigation--><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr><td><!--mstheme--><font face="Book Antiqua, Times New Roman, Times">
<!--msthemeseparator--><p align="center"><img src="_themes/expeditn/exphorsa.gif" width="600" height="10"></p>
<h6><!--mstheme--><font color="#666600">⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -