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How can i supply J8?

Started by yunusemrebora June 1, 2008
--- In c..., "yunusemrebora" wrote:
> > yunusemrebora,

A very important aspect of design is attention to detail.

A very important element of getting assistance is "providing accurate
details".

ED7 is NOT the same as DB_D7. They are different signals in the real
world. You need to refer to actual signal names.

First, you do not need to write a program to just set the bits. Open
a memory window and set the address to 0xB0000000 and enter
0xFFFFFFFF as a data value. Look at the result with a scope. The
data bits should be high on the scope [with nothing attached]. If
they are not, select the memory window, right click, and select
refresh. If the value comes back as 0, your 'test' will not work.

What you are doing 'technically not correct', but due to an anomalie
of the EMIF [bus hold feature], I think that it might work. The EMIF
is a time multiplexed bus - the only time that values are guaranteed
to be there is during the particular cycle [some number of nano
seconds] that the read or write occurs. If you want 'static data' you
should technically use a latch [refer to the LEDs in the DSK
schematics].

mikedunn

I found memory window in edit section and i changed the *B0000000
with 0xFFFFFFFF.now with no project can i load it directly?

last question where is the DB_D7 to DB-D0 on the board physically.so
i can connect them to the latch.thanks for all.
yunusemrebora,

On 6/3/08, yunusemrebora wrote:

> --- In c... , "yunusemrebora"
> wrote:
> > > yunusemrebora,
>
> A very important aspect of design is attention to detail.
>
> A very important element of getting assistance is "providing accurate
> details".
>
> ED7 is NOT the same as DB_D7. They are different signals in the real
> world. You need to refer to actual signal names.
>
> First, you do not need to write a program to just set the bits. Open
> a memory window and set the address to 0xB0000000 and enter
> 0xFFFFFFFF as a data value. Look at the result with a scope. The
> data bits should be high on the scope [with nothing attached]. If
> they are not, select the memory window, right click, and select
> refresh. If the value comes back as 0, your 'test' will not work.
>
> What you are doing 'technically not correct', but due to an anomalie
> of the EMIF [bus hold feature], I think that it might work. The EMIF
> is a time multiplexed bus - the only time that values are guaranteed
> to be there is during the particular cycle [some number of nano
> seconds] that the read or write occurs. If you want 'static data' you
> should technically use a latch [refer to the LEDs in the DSK
> schematics].
>
> mikedunn
>
> I found memory window in edit section and i changed the *B0000000
> with 0xFFFFFFFF.now with no project can i load it directly?
>

You do not need a project or program loaded to read/write a memory address.
You need to understand the basic capabilities of your debug tool [CCS].

It will be easier to use the view memory window - you can edit the contents
directly.

> last question where is the DB_D7 to DB-D0 on the board physically.so
> i can connect them to the latch.thanks for all.
>
??
??
Look at DSK schematics. These are the signals that go to pins 63-70 of J1.

mikedunn

>
>

--
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