[ECOS] port to SH3 7729RSE01 board

[ECOS] port to SH3 7729RSE01 board

[Campbell Family]

I'm new to eCos and to the SH3.  I am trying to use the existing eCos
platform for the 77x9SE01 to create a platform for the 7729RSE01.  The 7729R
runs at a faster speed than the 7709/7729, but the boards are otherwise
identical.  I compared the source code for the Hitachi-supplied ROM monitors
for both boards, and just found these differences: the setting in one of the
wait state registers, a WDT setup register setting and the frequency control
register setting.

I created a new eCos platform (using eCos 2.0 on Linux) with these changes
and was able to build and download a RedBoot image in Motorola-S format
sucessfully, but I can't get Redboot to work (no boot-up message broadcast
out the serial SCIF port on reset).  Any ideas about what I may have missed?
Thanks in advance for any insights.


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Re: [ECOS] port to SH3 7729RSE01 board

[Jonathan Larmour]

Campbell Family wrote:
> I'm new to eCos and to the SH3.  I am trying to use the existing eCos
> platform for the 77x9SE01 to create a platform for the 7729RSE01.  The 7729R
> runs at a faster speed than the 7709/7729, but the boards are otherwise
> identical.  I compared the source code for the Hitachi-supplied ROM monitors
> for both boards, and just found these differences: the setting in one of the
> wait state registers, a WDT setup register setting and the frequency control
> register setting.
> 
> I created a new eCos platform (using eCos 2.0 on Linux) with these changes
> and was able to build and download a RedBoot image in Motorola-S format
> sucessfully, but I can't get Redboot to work (no boot-up message broadcast
> out the serial SCIF port on reset).  Any ideas about what I may have missed?

Not off-hand apart from obviously questioning whether there isn't really 
some other difference ;-). If you've got LEDs on your board you can 
toggle, you could try and use those to see how far through the startup it 
gets.

Jifl
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