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37 lines
1.3 KiB
Plaintext
37 lines
1.3 KiB
Plaintext
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I wrote the attached little util program to try out the basic approach
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and thought that you might find it useful as well as providing some
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simple testing. It isn't a final solution so the interface is rough. The
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program must be run as root on an Intel based machine.
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The key point is that the IO address needs to be entered - I grab it
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from the dmesg output:
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eth0: 3Com 3c905B Cyclone 100baseTx at 0xe400, 00:10:4b:d2:5e:0d, IRQ
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11
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or "cat /proc/pci" to find the "I/O at XXXXXX" for your 3Com Card.
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Some example commands are:
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romutil 0xe400 erase - erases the ROM contents
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romutil 0xe400 protect - enables the Software Data Protection
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on the ROM [3c905B only]
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romutil 0xe400 unprotect - disables the Software Data Protection
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on the ROM [3c905B only]
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romutil 0xe400 id - displays the manufacturer and
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device IDs
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romutil 0xe400 read >file - writes the contents of the ROM to stdout
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romutil 0xe400 prog <file - writes the contents of the stdin into the
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ROM (<64k)
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I tried reading and writing the ROM while doing large ftp transfers and
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experienced no problems. I didn't spend much time worrying about the
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possible race conditions. My system has lots of resources (450MHx P2,
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128MB RAM) so it might not provide the best test candidate.
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Let me know what results you get if you try it out.
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Thanks
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John
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