[ECOS] External I/O access on Adder

Sugeng Widodo sugeng.widodo@gmail.com
Sat Mar 5 02:38:00 GMT 2005

Hi All,

I have to access external chips with 13 bits address and 16 bits data.
I programmed OR4 and BR4 to use CS4 with address beetwen 0xFB000000 -
0xFB007FFF and set the area to NOCACHE area. To do that I edited file
Adder.S and hal_aux.c.

Lower half of the area is work fine , except I could not catch the CS4
with my logic analyzer ?? But the next half always make my apps crash
when I access it. Sometimes I could access it for 4 times and
sometimes it's crash when I accessed it on the first time.

Anybody have any clue on that ?

Thanks for all of your help.

Sugeng Widodo
blog : http://elangmaya.blogspot.com

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