Thank you , Jesper SKov.
I have got the means of "exh 4".it means a exception happened,and the
exception
number is 4.But I don't which exception it is.I maybe find it in
program.It's
better if anybody give me some advice.
About microwin,I have turn on the arm7500's cache and write buffer.If I turn
off
them, the operation of window will be slower,expecially in refreshing
window.
----- Original Message -----
From: "Jesper Skov" <jskov@cambridge.redhat.com>
To: "wangwei" <wangw@start.com.cn>
Cc: <ecos-discuss@sources.redhat.com>
Sent: Thursday, March 08, 2001 3:14 PM
Subject: Re: [ECOS] run-time error " EXH 4"
> >>>>> "wangwei" == wangwei <wangw@start.com.cn> writes:
>
> wangwei> Hi: I'm porting microwindow in ecos.Now it can success in
> wangwei> runing mwin api. But a while later , the gdb console got a
> wangwei> message "EXH 4"from target,and the target dump. What is the
>
> No idea what that means.
>
> wangwei> meaning of this message? And my target is arm7500 in
> wangwei> 50MHz.but in microwindow,the operation of windows is very
> wangwei> slow. I think it would be faster in this cpu.Are there
> wangwei> anybody know it ? Help me . Thinks
>
> Does that ARM cpu have caches? Otherwise that could probably explain
> the bad performance.
>
> Jesper
>