What is the address of L3 cache on P4080ds?

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What is the address of L3 cache on P4080ds?

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Contributor II

Hi,

 

For P4080ds, the L3 cache (CPC), when it was used as cache instead of SRAM, does it has a fixed memory address?

 

If so, what is the address?

 

Regards,

Peter Zheng

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3 Replies

NXP Employee
NXP Employee

Hi,

I think CPC configuring as L3 Cache doesn't have fixed memory address, why do you need the address?


Have a great day,
Lunmin

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Contributor II

Hi Lunmin,

Agree with you. The reason I ask this question is I want to run a simple program on one core of P4080. And limit this core to only access 1/8 of L3 cache.

I was thinking if I know the fixed address of L3, then I can write to it directly. But it seems to be impossible now.

So to achieve my purpose, do you have any other approach to make one core only access 1/8 of L3 cache.

Thanks,

Peter

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NXP Employee
NXP Employee

Hi,

See the approach I post:

How to partition the L3 Cacahe of P4080 using CodeWarrior?

Regards

Lunmin

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