mirror of
https://github.com/xcat2/xNBA.git
synced 2024-11-22 17:41:55 +00:00
25 lines
1.2 KiB
Plaintext
25 lines
1.2 KiB
Plaintext
|
This code was written by Dave Ashley for NXTV, Inc. It is released under
|
||
|
|
the terms of the GPL. The purpose is to let you write to the bootrom of
|
||
|
|
the SMC9462TX card. The assumption is that you've stuck an AT29C512 in the
|
||
|
|
socket. Note that the board has pins D5 + D6 reversed on the socket. Also
|
||
|
|
the socket only supplies 3.3V to the rom. Good luck trying to locate a
|
||
|
|
DIP programmable flash device that operates at 3.3V. What I do is to bend
|
||
|
|
pin 32 back and solder a wire directly from the 5V side of the 3.3V regulator
|
||
|
|
over to it. The dp83820's bootrom interface pins are all 5V logic tolerant.
|
||
|
|
However mod your board at your own risk, no warranty or guarantees are implied
|
||
|
|
or given!!! If you don't wire the 5V to the AT29C512, you can still read
|
||
|
|
the rom contents (it operates ok at 3.3V evidently) but you can't write to it
|
||
|
|
because the AT29C512 has a safety protection, it disables writes if the
|
||
|
|
power supply voltage drops below 3.8V.
|
||
|
|
|
||
|
|
See the comments at the top of the 2 C files for more information.
|
||
|
|
|
||
|
|
The Makefile needs to be hacked to build for your system. If you can't
|
||
|
|
figure it out you shouldn't be messing with this stuff anyway.
|
||
|
|
|
||
|
|
-Dave Ashley
|
||
|
|
Email address intentionally left out to avoid spam.
|
||
|
|
http://www.xdr.com/dash
|
||
|
|
|
||
|
|
Mon Mar 8 13:55:34 PST 2004
|