memory related issue

hi
i am using ADSP 2181 my application. i have interfaced EPROM with BDMA
port of the processor. but now i have to increase my code size, with
this my on chip memory is insufficient to store my code.
now i want to use external SRAM to run my application.
but now i am not getting that how can i store my code in SRAM so that
at power on reset dsp start executing code from external memory.
and also which file i have to store in SRAM
from
bhatt_nitk Start a New Thread

Hi,

have you alredy used overlays and program still does
not fit within conhip RAM?

JaaC

--- bhatt_nitk wrote:

> hi
> i am using ADSP 2181 my application. i have
> interfaced EPROM with BDMA
> port of the processor. but now i have to increase my
> code size, with
> this my on chip memory is insufficient to store my
> code.
> now i want to use external SRAM to run my
> application.
> but now i am not getting that how can i store my
> code in SRAM so that
> at power on reset dsp start executing code from
> external memory.
> and also which file i have to store in SRAM
> from
> bhatt_nitk
>
> a...
>
>
>

Jaime Andr Aranguren Cardona
j...@ieee.org
j...@computer.org
__________________________________________________ Start a New Thread

Hi JaaC,

Your question is not clear to me....

do you mean that even after using the overlays, the on-chip memory not being
sufficient (individual overlay functions big enough to fit in to on-chip
memory) or something else???

please also mention about the DSP which you are working with.

Regards,
kunal
On 3/29/06, Jaime Andres Aranguren Cardona
wrote:
>
> Hi,
>
> have you alredy used overlays and program still does
> not fit within conhip RAM?
>
> JaaC
>
> --- bhatt_nitk wrote:
>
> > hi
> > i am using ADSP 2181 my application. i have
> > interfaced EPROM with BDMA
> > port of the processor. but now i have to increase my
> > code size, with
> > this my on chip memory is insufficient to store my
> > code.
> > now i want to use external SRAM to run my
> > application.
> > but now i am not getting that how can i store my
> > code in SRAM so that
> > at power on reset dsp start executing code from
> > external memory.
> > and also which file i have to store in SRAM
> > from
> > bhatt_nitk
> >
> > Start a New Thread

Hi,

Well, those questions are for you, the original
poster.

In other words, my questions are:

1. Did you already use internal memory overlays?
2. If yes, does the program still not fit within
on-chip (internal) memory?
3. If not, go ahead and use overlays first!

Overlays work for several of the ADSP-218x processors,
including the ADSP-2181 (the one you said you use).

Regards,

JaaC

--- Kunal Singh wrote:

> Hi JaaC,
>
> Your question is not clear to me....
>
> do you mean that even after using the overlays, the
> on-chip memory not being
> sufficient (individual overlay functions big enough
> to fit in to on-chip
> memory) or something else???
>
> please also mention about the DSP which you are
> working with.
>
> Regards,
> kunal
> On 3/29/06, Jaime Andres Aranguren Cardona
>
> wrote:
> >
> > Hi,
> >
> > have you alredy used overlays and program still
> does
> > not fit within conhip RAM?
> >
> > JaaC
> >
> > --- bhatt_nitk wrote:
> >
> > > hi
> > > i am using ADSP 2181 my application. i have
> > > interfaced EPROM with BDMA
> > > port of the processor. but now i have to
> increase my
> > > code size, with
> > > this my on chip memory is insufficient to store
> my
> > > code.
> > > now i want to use external SRAM to run my
> > > application.
> > > but now i am not getting that how can i store my
> > > code in SRAM so that
> > > at power on reset dsp start executing code from
> > > external memory.
> > > and also which file i have to store in SRAM
> > > from
> > > bhatt_nitk
> > >
> > > a...
>
>
>

Jaime Andr Aranguren Cardona
j...@ieee.org
j...@computer.org
__________________________________________________ Start a New Thread

there are a couple of application notes on ADI website on code/data overlays
...
one app note also contains some source code for 2181 implementation
.. may be it is worth to read that
http://www.analog.com/processors/resources/technicalLibrary/appNotes.html

you can get a number of app notes on overlays on the above link....

kunal

On 3/31/06, Jaime Andres Aranguren Cardona
wrote:
>
> Hi,
>
> Well, those questions are for you, the original
> poster.
>
> In other words, my questions are:
>
> 1. Did you already use internal memory overlays?
> 2. If yes, does the program still not fit within
> on-chip (internal) memory?
> 3. If not, go ahead and use overlays first!
>
> Overlays work for several of the ADSP-218x processors,
> including the ADSP-2181 (the one you said you use).
>
> Regards,
>
> JaaC
>
> --- Kunal Singh wrote:
>
> > Hi JaaC,
> >
> > Your question is not clear to me....
> >
> > do you mean that even after using the overlays, the
> > on-chip memory not being
> > sufficient (individual overlay functions big enough
> > to fit in to on-chip
> > memory) or something else???
> >
> > please also mention about the DSP which you are
> > working with.
> >
> > Regards,
> > kunal
> >
> >
> > On 3/29/06, Jaime Andres Aranguren Cardona
> > < j...@yahoo.com>
> > wrote:
> > >
> > > Hi,
> > >
> > > have you alredy used overlays and program still
> > does
> > > not fit within conhip RAM?
> > >
> > > JaaC
> > >
> > > --- bhatt_nitk wrote:
> > >
> > > > hi
> > > > i am using ADSP 2181 my application. i have
> > > > interfaced EPROM with BDMA
> > > > port of the processor. but now i have to
> > increase my
> > > > code size, with
> > > > this my on chip memory is insufficient to store
> > my
> > > > code.
> > > > now i want to use external SRAM to run my
> > > > application.
> > > > but now i am not getting that how can i store my
> > > > code in SRAM so that
> > > > at power on reset dsp start executing code from
> > > > external memory.
> > > > and also which file i have to store in SRAM
> > > > from
> > > > bhatt_nitk
> > > >
> > > >
> >
> > Start a New Thread