ml670100 Oki Semiconductor, ml670100 Datasheet - Page 39

• Manufacturer Part Number: ml670100
• Description: Ml670100 Is A High-performance 32-bit Microcontroller
• Manufacturer: Oki Semiconductor

2.9.9
2.10
When multiple exceptions arise at the same time, a fixed priority system determines the order
in which they are handled:
Highest priority:
Lowest priority:
Not all exceptions can occur at once:
Undefined Instruction and Software Interrupt are mutually exclusive, since they each
correspond to particular (non-overlapping) decodings of the current instruction.
Exception priorities
Reset
After a system reset, the CPU:
1
2
3
4
1
2
3
4
Overwrites R14_svc and SPSR_svc by copying the current values of the PC
and CPSR into them. The value of the saved PC and SPSR is not defined.
Forces M [4:0] to 10011(Supervisor mode), sets the I and F bits in the CPSR.
Forces the PC to fetch the next instruction from address 0x00.
Execution resumes in ARM state.
Reset
FIQ
IRQ
Undefined Instruction, software interrupt.
2-13