Hello,
If I copy the firmware to SRAM and start execute program from there using STM32F429 (which means that system bus is used to fetch instructions instead of I-code bus).
At this case do fetching instructions and data access can be carried out in parallel ? and which is better for performance fetching instructions from flash or SRAM?
( I know that SRAM is faster than FLASH).
I don't intend a specific microcontroller ... I mean using a very simple controller without any memory accelerators and nothing special with buses just using arm cortex-m4 .. what is faster from cortex-m4 point of view?and do fetching instructions and data access can be carried out in parallel when fetching from sram?
Islam Gamal said:I don't intend a specific microcontroller
So why did you specifically say STM32F429, then ?
But the answer does always depend on the specific details of the particular implementation - so the only fully general answer remains, "It depends".