to set the priority level of an interrupt source, we must deal only one bit. true or false?
False. To set the priority level of an interrupt source, multiple bits are usually used.
False. To set the priority level of an interrupt source, we typically require a number of bits, not just one. The number of bits needed will depend on the total number of interrupt sources supported by the system and the desired level of granularity for prioritization.
False. To set the priority level of an interrupt source, typically more than one bit is involved. The number of bits required depends on the number of interrupt sources or priority levels supported by the system. The number of bits determines the range of priority levels that can be assigned. For example, if there are 8 interrupt sources, then at least 3 bits are required to represent all the priority levels from 0 to 7 (2^3 = 8).
To set the priority level of an interrupt source:
1. Determine the number of interrupt sources or priority levels supported by the system.
2. Determine the number of bits required to represent all the priority levels. This can be done by finding the smallest power of 2 that is greater than or equal to the number of interrupt sources.
3. Allocate a specific number of bits in the interrupt controller or priority register for each interrupt source to represent its priority level.
4. Configure the value of the allocated bits to set the desired priority level for each interrupt source.
5. Ensure that the interrupt controller or priority register is properly programmed to handle interrupt requests based on the priority levels.
By setting the appropriate bits to specific values, the priority level of each interrupt source can be established and the interrupt handling can be prioritized accordingly.