AVR-Chat

In AVRstudio, under the debug menu, I see "stack monitor", however it is ALWAY greyed out. I cannot find any mention of it in the AVRstudio help pages.

Does anyone know how to use this?

BTW, what I really hoped to do was keep track of the lowest sp during simulation. Any ideas on how to do this? Or any ideas on general stack overflow detection techniques (aside from "coloring" the data space and then looking for non-colored pages)?


  - jim

p.s. Running AVRstudio 4.10

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--- In AVR-Chat@yahoogroups.com, Ridho Alpha <pendekar_ridho@y...> 
wrote:
> can i use AT90S8515 and AT24C256 as program memory ot data memory???

You can't execute AVR code from it but you can store data there.  
Technically, it is possible to copy code from the external device to 
Flash but you probably shouldn't do that due to the write cycle 
limitations.

> so, how can i name that device??? from the A0 dan A1 of the 
AT24C256??

I don't understand the question.  The device that you mention has an 
SPI interface.  The A0/A1 lines can be used for selecting among 
multiple devices.

Not program memory. For data memory, you have to design
your own data management. 

Jim


On Wed, 29 Dec 2004 00:48:38 +0000 (GMT)
 Ridho Alpha <pendekar_ridho@yahoo.com> wrote:
> 
> hello....
> 
> can i use AT90S8515 and AT24C256 as program memory ot
> data memory???
> 
> so, how can i name that device??? from the A0 dan A1 of
> the AT24C256??
> 
>  
> 
> thanx
> 
> 
> 
> ---------------------------------
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At 03:05 AM 29/12/04 -0000, you wrote:
> The device that you mention has an SPI interface.

Is the 24 series SPI or TWI? Xicor used the 24 series
for TWI and the 25 series for SPI. Don't know about
the above chip.

Regards

John Samperi

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--- In AVR-Chat@yahoogroups.com, Ridho Alpha <pendekar_ridho@y...> 
wrote:
> so..if i want to use program memory with external EEPROM,what
> should i do????using parallel EEPROM like AT28CXXX instead of
> AT24CXX,is it true???

My advice: change your plan.

I don't recall seeing any AVR that can directly access external code 
memory.  The AT90S8515 (which is not recommended for new designs, by 
the way), supports external RAM that is in the data space but not for 
code space.

If you need more code space, why don't you switch to a mega16 or 
mega32 which have 2x and 4x as much code space?  They're also faster 
and cheaper and have more capabilities than the AT90S8515.

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