[ECOS] Question about system bus
Lewin A.R.W. Edwards
larwe@larwe.com
Wed Jun 20 11:02:00 GMT 2001
>while writing to the external IO bank0 I can get CS and while reading I
>can't get CS why?
I haven't been following this thread, so excuse me if this has already been
mentioned, but if your CPU has Dcache then it should be disabled for this
I/O range; check the MMU tables.
-- Lewin A.R.W. Edwards
Embedded Engineer, Digi-Frame Inc.
Work: http://www.digi-frame.com/
Tel (914) 937-4090 9am-6:30pm M-F ET
Personal: http://www.larwe.com/ http://www.zws.com/
"Far better it is to dare mighty things, to win glorious triumphs, even
though checkered by failure, than to rank with those poor spirits who
neither enjoy much nor suffer much, because they live in the gray twilight
that knows not victory nor defeat."
(Theodore Roosevelt)
More information about the Ecos-discuss
mailing list