Carl-Daniel Hailfinger wrote:
On 25.09.2009 01:55, Uwe Hermann wrote:
On Wed, Sep 23, 2009 at 08:39:01PM -0600, Marko Kraljevic wrote:
I put my flashing machine back together, and installed two
3C905CX-TX-M cards[...]
( i'm unsure whether the >512kbit addr
line(s) are drawn out to the flash or not ).
The maximum supported chip size as per 3Com datasheets is 128KB.
Are there any GPIOs one could wire up as additional address lines with
special handling code? With the current flashrom infrastructure, that
would be almost trivial.
Regards,
Carl-Daniel
I don't believe there are. A while back, on a different NIC, I put a
latch on the upper address lines; I'm quite sure I made a post about it,
but maybe not. It was pretty ugly, but worked - planning to get a PCB
made someday; should be able to just drop it in the socket on a
unmodified card :-)
The top address line selects a latch, and then you can write the upper
address bits to the latch...
schematic:
http://electrontube.org/3com_mod/minimal_sm.png
code change... could be beautified some:
http://electrontube.org/3com_mod/3comhack.diff
picture of the hardware:
http://electrontube.org/3com_mod/etherlink_mod.jpg
I was planning on using the leftover GPIO's off the latch to enable HV
for 27xxx EPROMs. Someday...
-mark
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