The uCsimm is very allergic to long cables, bad power, etc. Hyperterminals
retry mechanism probably is better.
Half the time mine does this so:
I use a short cable with high quality shielding.
I put extra caps on the simm.
I retry a few times and one generally takes.
But the cable makes a big difference.
>I'm trying to upload my first image file to the ucsimm...
>I successfully connected via ttyS0 and changed the speed to 115200
>(minicom and bootloader)
>Then I typed the rx command.
>Then I started the xmodem upload (after changing the protocol entries to
>use /usr/bin/sz -X) and then I always get the xmodem error "NAK on
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