Samsung KS57C2308 Manual page 126

SAM47 INSTRUCTION SET
EI
— Enable Interrupts
EI
Operation: Operand
Description: Bit 3 of the interrupt priority register IPR (IME) is set to logic one. This allows all interrupts to be
serviced when they occur, assuming they are enabled. If an interrupt's status latch was
previously enabled by an interrupt, this interrupt can also be serviced.
Operand
Example: If the IME bit (bit 3 of the IPR) is logic zero (e.g., all instructions are disabled), the instruction
EI
sets the IME bit to logic one, enabling all interrupts.
5-52
– Enable all interrupts
– 1 1 1
1 0 1
Operation Summary
Binary Code
1 1 1 1
1 0 0 1
KS57C2308/P2308/C2316/P2316
Bytes
2
Operation Notation
1 IM 1
0
Cycles
2