Its likely the TS-7200 watchdog timer is set for less than 8 seconds. The
watchdog reboots the board before it can download the SerialBlaster boot
loader. This isn't a problem on TS-7250 boards 'cause the watchdog is 8
seconds, and most people can upload the boot image in that time.
So here's my fix....
Connect the FEED_WDOG/RESET pin of the 74HC4020 binary counter to the 3.3v
supply. This forces a continuous watchdog feed. Unfortunately your CF
connector is soldered over this chip, and you'd need access to the chip to
solder off the reset pin (pin 11), and bend it up and solder it to the
supply! Pill 11 is really hidden. It looks like you could use a Dremel power
tool to cut an access hole in the top of the CF card reader to have access to
the chip.
It may also be possible to solder off Power pin (pin 16) (easily accessable in
the front without cutting the CF card reader). This may also stop the
watchdog.
(try, at your own risk)
I know its not a very practical solution, sorry, the best I can think of for
now.
-Curtis.
On June 2, 2006 07:34 pm, zeener zits wrote:
> Thanks for the idea.
> My next step will be to trya and apply the info the Cirrus 9301 manual to
what I am trying to accomplish, as I had not done that yet (but knew I was
missing important info).
>
>
> yur_grampa <> wrote: Investigating the Serialblaster
error message:
>
> waiting for '>'
> error!!!found '<'
>
> I found by sending a boot.bin of size less than 2k that the message
> returned is:
>
> Success.
>
> Therefore I will now try to determine how to go from here to the
> confirmation message:
> waiting for '>'
> found '>'
>
> . Obviously file length is a factor here.
>
> Perhaps the ts7200 uses different offsets than the ts7250(in the
> boot.s or related files) and these will need to be edited.
>
>
>
>
>
>
>
>
>
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