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Running from internal RAM on DSC 56800/E

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Running from internal RAM on DSC 56800/E

‎03-29-2018 06:31 AM
538 Views
elvismemphis
Contributor I

I am working with the 56800/E parts and want to put a small piece of code in RAM. However, in the "DSP56800E and DSP56800EX Core Reference Manual", pg. 8-23, section "8.6 Executing Programs from Data Memory", it seems that the whole application has to go into flash (vectors too) and then configure the part to execute from Internal RAM only.

Is it an all or nothing deal when running from internal RAM on the DSC controller?

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‎04-01-2018 11:37 PM
414 Views
xiangjun_rong
NXP TechSupport
NXP TechSupport

Hi, Elvis,

As you know that the DSC have on-chip program flash, program RAM, data flash(optional) and data RAM.

In practice, user can copy code from program flash to program RAM and execute code in program RAM. I do not think user can copy code to data RAM and execute code in data RAM.

For example, when the DSC has only one block of program flash, it is recommended to copy the code to erase/program flash to program RAM and execute the code to erase/program program flash in program RAM.

You can check the code of flash bean if you develop code in Processor Expert.

Hope it can help you

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