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25 lines
1.2 KiB
Plaintext
25 lines
1.2 KiB
Plaintext
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This code was written by Dave Ashley for NXTV, Inc. It is released under
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the terms of the GPL. The purpose is to let you write to the bootrom of
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the SMC9462TX card. The assumption is that you've stuck an AT29C512 in the
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socket. Note that the board has pins D5 + D6 reversed on the socket. Also
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the socket only supplies 3.3V to the rom. Good luck trying to locate a
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DIP programmable flash device that operates at 3.3V. What I do is to bend
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pin 32 back and solder a wire directly from the 5V side of the 3.3V regulator
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over to it. The dp83820's bootrom interface pins are all 5V logic tolerant.
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However mod your board at your own risk, no warranty or guarantees are implied
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or given!!! If you don't wire the 5V to the AT29C512, you can still read
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the rom contents (it operates ok at 3.3V evidently) but you can't write to it
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because the AT29C512 has a safety protection, it disables writes if the
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power supply voltage drops below 3.8V.
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See the comments at the top of the 2 C files for more information.
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The Makefile needs to be hacked to build for your system. If you can't
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figure it out you shouldn't be messing with this stuff anyway.
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-Dave Ashley
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Email address intentionally left out to avoid spam.
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http://www.xdr.com/dash
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Mon Mar 8 13:55:34 PST 2004
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