Re: [ECOS] Help needed: eCos on NEC vr4300 board.

[Jonathan Larmour <jlarmour at redhat dot co dot uk>]

Ling Su wrote:
> 
> Hello,
> 
> I am trying to set up the environment for debugging NEC VR4373 board.
> Unfortunately I met a lot of trouble to make the remote debugging
> working..:( Could anyone please help me on following questions,
> 
> <1>. I found two files in vr4374 gdbstub directory: .bin and .img, I burned
> the .bin into a EEPROM and set the baudrate to 38400, I connect the serial
> ports by a direct serial cable. In gdb, when I try to connect to remote
> target... It complains three times, "ignore packet error, continuing..." and
> at last failed with an error message "Malformed response to offset query.
> timeout"... Did I do anything wrong.. Did I burn the correct gdb stub?

Connect using a terminal emulator to check you can see the correct stub
output coming from the board when it is switched on. It should be something
like
++$T

In GDB make sure you have the correct endianness, using "set endian big".
Also use "set mips saved-gpreg-size 32" as the documentation says.

> <2>. Can I use Ethernet instead of serial port on vr4373?

Nope.

> <3>. Is there a CygMon avaibliable for vr4373?

Nope sorry.
 
Jifl
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