How does the processor really work ?

Explain in detail. Not trying to be snobbish, but I'm curous and heaven't much in the way of documentation on the feature.
How does the processor really work ?

Explain in detail. Not trying to be snobbish, but I'm curous and heaven't much in the way of documentation on the feature.
What does the XTAL directive really mean?

I am confused by the documentation. It states in the "Getting Started" book that the XTAL [directive in the Target dialog] specifies the CPU clock for my device. "In most cases this value is inentical...
What does the XTAL directive really mean?

I am confused by the documentation. It states in the "Getting Started" book that the XTAL [directive in the Target dialog] specifies the CPU clock for my device. "In most cases this value is inentical...
Clear or Set NVIC Interrupts with NVIC->ICER[0] and ISER[0] causes error

When setting or clearing NVIC Interrupts without library functions the |= operator doesnt work. When I used it, all other interrupts were cleared. The stm32F103 Datasheet says that the actual enable...