Characteristics of Interrupts and Wake-up Mechanisms in 6502 Assembly
1. Maskable Interrupts (IRQ) Can be enabled/disabled by setting the I bit in the status register Typically used for interrupt requests from external devices Automatically saves the PC and P registers to the stack upon response 2. Non-Maskable Interrupts (NMI) Cannot be disabled by software Usually used for emergencies (e.g., power failure) Has a higher … Read more
