LPC2103

enable interrupt


參考資訊:
1. arm-assembler
2. lpc-arm-book
3. arm_exception_slides

暫存器


enable interrupt

mrs r0, cpsr
bic r0, #0x80
msr cpsr_c, r0

disable interrupt

mrs r0, cpsr
orr r0, #0x80
msr cpsr_c, r0


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