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105 lines
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<h1>How to access system memory?</h1>
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<ul>
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<li><em>To</em>: <A HREF="mailto:ldp-discuss@lists.linuxdoc.org">ldp-discuss@lists.linuxdoc.org</A></li>
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<li><em>Subject</em>: How to access system memory?</li>
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<li><em>From</em>: <A HREF="mailto:ldp-discuss-request@lists.debian.org">ldp-discuss-request@lists.debian.org</A></li>
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<li><em>Date</em>: Tue, 4 Apr 2000 15:12:13 +0800</li>
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<li><em>Resent-date</em>: 4 Apr 2000 07:22:23 -0000</li>
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<li><em>Sender</em>: <A HREF="mailto:zhanghwb@legend.com.cn">zhanghwb@legend.com.cn</A></li>
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<pre>
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Dear all:
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I want to write a program to read some bytes from memory
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0xF000:0800(0XF0800) to 0xF000:0d00(0xf0d00) under LINUX, I know that I
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should write a device drvier to read memory data, but some function as
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memcpy_tofs and memcpy_fromfs are not define under asm/segment. and when I
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direct read the address ,when i use "insmod mydrv", an error said
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"segmentatin fault",and "unable to handle kernel paging request at virtual
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address 000f0800".
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how can I do
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thanks very much!!!
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Good Luck!
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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<EFBFBD>ź<EFBFBD>ΰ Hongwei Zhang
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Office Tel.:(0755)2712288-8832
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pager :191(2)-8113143
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Email :zhanghwb@legend.com.cn
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