Quote:
Originally Posted by knc1
Do you have a link for that adapter board?
Just knowing what chip it uses does not help a whole lot.
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The only thing different about the K4 ... KV devices is the location of the serial port pads on the motherboard.
The K4 does not use the same initialization system as the newer models.
Don't make any generalizations from how that portion works.
Back in the days when the K4 was current, the 'recommended' adapter was an adapter cable that did not require an external reference.
Which is why you don't find a post about where to find it on the board.
If, after reading about the specific adapter you are using, I find that you do need the external reference - -
I'll dig out a K4 and see if I can find one on the board for you.
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Thanks so much--the board i was using was this one:
http://jim.sh/ftx/
And after some hunting, I found the pinout here:
http://jurriaandevos.nl/kindle-4-hac...ial-io-header/
I went ahead and connected the appropriate pins without a voltage reference, and it appears to work! I rebooted the kindle and got the boot messages to show up through putty.
Thanks for clarifying the voltage info!